O–Ti phases

22 phases (tier A 5, tier C 9, liquid 2, gas 2, needs_review 4); 20 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · O–Ti system page · Markdown · field reference

Phases of the O–Ti system (22)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
HALITE_B1 phase:o-ti:b1-halite	NaCl · B1 · cF8 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1211.07–2500 K, x(O) 0.33412–0.50744	0	1
B1_OXIDE phase:o-ti:b1-oxide	NaCl · B1 · cF8 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	4
BCC_A2 phase:o-ti:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 1140–2016.42 K, x(O) 0–0.07978	2	5
RUTILE_C4 phase:o-ti:c4-rutile	TiO2 · C4 · tP6 · P4_2/mnm (136)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 2 calculated diagram(s): 300–2142.05 K, x(O) 0.66441–0.66667	2	5
CORUNDUM_D51 phase:o-ti:d51-corundum	alpha-Al2O3 · D5_1 · hR10 · R-3c (167)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 2 calculated diagram(s): 300–415 K, x(O) 0.6–0.6	10	5
FCC_A1 phase:o-ti:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 2 calculated diagram(s)	0	5
GAS phase:o-ti:gas	gas	gas	stable in 1 of 2 calculated diagram(s): 300.57–2500 K, x(O) 0.99992–1	1	5
HCP_A3 phase:o-ti:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–2166.47 K, x(O) 0–0.33333	10	5
ION phase:o-ti:ion	liquid	liquid	stable in 1 of 1 calculated diagram(s): 1775.98–2500 K, x(O) 0–0.42818	0	3
LIQUID phase:o-ti:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 1937.94–2500 K, x(O) 0–0.6684	17	5
O2GAS phase:o-ti:o2gas	gas	gas	stable in 1 of 2 calculated diagram(s): 300–1185 K, x(O) 1–1	0	5
TI10O19 phase:o-ti:ti10o19	Ti10O19 · aP58 · P-1 (2)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1971.73 K, x(O) 0.65517–0.65517	2	4
TI20O39 phase:o-ti:ti20o39	Ti20O39 · aP118 · P-1 (2)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 469.51–2029.55 K, x(O) 0.66102–0.66102	2	4
TI3O2 phase:o-ti:ti3o2	(Ti3O2) · hP5 · P6/mmm (191)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 2 calculated diagram(s): 300–335 K, x(O) 0.4–0.4	2	5
TI3O5 phase:o-ti:ti3o5		needs_review	stable in 1 of 2 calculated diagram(s): 785.4–2046.49 K, x(O) 0.625–0.625	9	5
TI4O7 phase:o-ti:ti4o7		needs_review	stable in 1 of 1 calculated diagram(s): 300–1940.4 K, x(O) 0.63636–0.63636	4	4
TI5O9 phase:o-ti:ti5o9	Ti5O9 · aP28 · P-1 (2)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300.4–1950.45 K, x(O) 0.64286–0.64286	5	4
TI6O11 phase:o-ti:ti6o11		needs_review	stable in 1 of 1 calculated diagram(s): 300.45–1954.69 K, x(O) 0.64706–0.64706	2	4
TI7O13 phase:o-ti:ti7o13	Ti7O13 · aP40 · P-1 (2)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300.1–1957.6 K, x(O) 0.65–0.65	2	4
TI8O15 phase:o-ti:ti8o15		needs_review	stable in 1 of 1 calculated diagram(s): 300.1–1962.46 K, x(O) 0.65217–0.65217	2	4
TI9O17 phase:o-ti:ti9o17	Ti9O17 · aP52 · P-1 (2)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300.48–1965.48 K, x(O) 0.65385–0.65385	2	4
TIO_ALPHA phase:o-ti:tio-alpha	alpha-TiO · mC20 · C2/m (12)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1211.07 K, x(O) 0.5–0.5	6	5

HALITE_B1 (O–Ti)

Id: phase:o-ti:b1-halite; status assigned
Structure: NaCl · B1 · cF8 · Fm-3m (225); type st:b1-nacl-cf8; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 1211.07–2500 K, x(O) 0.33412–0.50744
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:o-ti:b1-halite
tdb: tdb:TiO-94Lee.tdb:HALITE_B1

TDB models of HALITE_B1 (1): PHASE and CONSTITUENT statements as written

TiO-94Lee.tdb: HALITE_B1, type code %, sha256 997ef7bf750652c5…

77: PHASE HALITE_B1:I % 3 1 1 1 !
78: CONST HALITE_B1:I : TI+2% TI+3 VA : TI VA : O-2 : !

B1_OXIDE (O–Ti)

Id: phase:o-ti:b1-oxide; status assigned
Structure: NaCl · B1 · cF8 · Fm-3m (225); type st:b1-nacl-cf8; tier A: standard phase name; confidence high
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:o-ti:b1-oxide
tdb: tdb:TiO-07Can.tdb:B1_OXIDE, tdb:TiO-15Ham.tdb:B1_OXIDE, tdb:TiO-17Ila.tdb:B1_OXIDE, tdb:TiO-17Yan.tdb:B1_OXIDE

TDB models of B1_OXIDE (4): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: B1_OXIDE, type code %, sha256 46fa6a309adf9c1c…

75: PHASE B1_OXIDE:I % 3 1 1 1 !
76: CONST B1_OXIDE:I : TI+2% TI+3 VA : TI VA : O-2 : !

TiO-15Ham.tdb: B1_OXIDE, type code %, sha256 e95d8422ca5608f3…

64: PHASE B1_OXIDE:I % 2 1 1 !
65: CONST B1_OXIDE:I : TI TI+2% TI+3 VA : O-2% VA : !

TiO-17Ila.tdb: B1_OXIDE, type code %, sha256 8e488837402ac5c9…

68: PHASE B1_OXIDE:I % 2 1 1 !
69: CONST B1_OXIDE:I : TI TI+2% TI+3 VA : O-2% VA : !

TiO-17Yan.tdb: B1_OXIDE, type code %, sha256 f79af7f26633b1d6…

78: PHASE B1_OXIDE:I % 2 1 1 !
79: CONST B1_OXIDE:I : TI TI+2% TI+3 VA : O-2% VA : !

Example references (4 of 4; assessments first):

doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase

BCC_A2 (O–Ti)

Id: phase:o-ti:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 1140–2016.42 K, x(O) 0–0.07978
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:o-ti:bcc-a2
paper: paper:10.1016/j.calphad.2007.01.009:bcc
tdb: tdb:TiO-07Can.tdb:BCC_A2, tdb:TiO-15Ham.tdb:BCC_A2, tdb:TiO-17Ila.tdb:BCC_A2, tdb:TiO-17Yan.tdb:BCC_A2, tdb:TiO-94Lee.tdb:BCC_A2

TDB models of BCC_A2 (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: BCC_A2, type code %B, sha256 46fa6a309adf9c1c…

60: PHASE BCC_A2 %B 2 1 1 !
61: CONST BCC_A2 : TI : O VA% : !

TiO-15Ham.tdb: BCC_A2, type code %B, sha256 e95d8422ca5608f3…

49: PHASE BCC_A2 %B 2 1 3 !
50: CONST BCC_A2 : TI : O VA% : !

TiO-17Ila.tdb: BCC_A2, type code %B, sha256 8e488837402ac5c9…

53: PHASE BCC_A2 %B 2 1 3 !
54: CONST BCC_A2 : TI : O VA% : !

TiO-17Yan.tdb: BCC_A2, type code %B, sha256 f79af7f26633b1d6…

63: PHASE BCC_A2 %B 2 1 3 !
64: CONST BCC_A2 : TI : O VA% : !

TiO-94Lee.tdb: BCC_A2, type code %B, sha256 997ef7bf750652c5…

62: PHASE BCC_A2 %B 2 1 3 !
63: CONST BCC_A2 : TI : O VA% : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase
doi:10.1007/bf02873201 J. L. Murray, H. A. Wriedt, The O−Ti (Oxygen-Titanium) system, JPE 8, 148-165 (1987).
cited as the source of values for this phase

RUTILE_C4 (O–Ti)

Id: phase:o-ti:c4-rutile; status assigned
Structure: TiO2 · C4 · tP6 · P4_2/mnm (136); type st:c4-tio2-tp6; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (unrecognised_name_tokens:RUTILE); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 1 of 2 calculated diagram(s): 300–2142.05 K, x(O) 0.66441–0.66667
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:o-ti:c4-rutile
paper: paper:10.1016/j.calphad.2007.01.009:TiO2
tdb: tdb:TiO-07Can.tdb:RUTILE_C4, tdb:TiO-15Ham.tdb:RUTILE_C4, tdb:TiO-17Ila.tdb:RUTILE_C4, tdb:TiO-17Yan.tdb:RUTILE_C4, tdb:TiO-94Lee.tdb:RUTILE_C4

TDB models of RUTILE_C4 (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: RUTILE_C4, type code %, sha256 46fa6a309adf9c1c…

135: PHASE RUTILE_C4:I % 2 1 2 !
136: CONST RUTILE_C4:I : TI+3 TI+4 : O-2 VA : !

TiO-15Ham.tdb: RUTILE_C4, type code %, sha256 e95d8422ca5608f3…

124: PHASE RUTILE_C4:I % 2 1 2 !
125: CONST RUTILE_C4:I : TI+4 : O-2 VA-2 : !

TiO-17Ila.tdb: RUTILE_C4, type code %, sha256 8e488837402ac5c9…

128: PHASE RUTILE_C4:I % 2 1 2 !
129: CONST RUTILE_C4:I : TI+4 : O-2 VA-2 : !

TiO-17Yan.tdb: RUTILE_C4, type code %, sha256 f79af7f26633b1d6…

138: PHASE RUTILE_C4:I % 2 1 2 !
139: CONST RUTILE_C4:I : TI+4 : O-2 VA-2 : !

TiO-94Lee.tdb: RUTILE_C4, type code %, sha256 997ef7bf750652c5…

99: PHASE RUTILE_C4:I % 2 1 2 !
100: CONST RUTILE_C4:I : TI+4 : O-2 : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase
doi:10.1007/bf02873201 J. L. Murray, H. A. Wriedt, The O−Ti (Oxygen-Titanium) system, JPE 8, 148-165 (1987).
cited as the source of values for this phase

CORUNDUM_D51 (O–Ti)

Id: phase:o-ti:d51-corundum; status assigned
Structure: alpha-Al2O3 · D5_1 · hR10 · R-3c (167); type st:d5-1-alpha-al2o3-hr10; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (unrecognised_name_tokens:CORUNDUM); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 1 of 2 calculated diagram(s): 300–415 K, x(O) 0.6–0.6
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:o-ti:d51-corundum
paper: paper:10.1016/j.calphad.2007.01.009:Ti2O3
tdb: tdb:TiO-07Can.tdb:CORUNDUM_D51, tdb:TiO-15Ham.tdb:CORUNDUM_D51, tdb:TiO-17Ila.tdb:CORUNDUM_D51, tdb:TiO-17Yan.tdb:CORUNDUM_D51, tdb:TiO-94Lee.tdb:CORUNDUM_D51

TDB models of CORUNDUM_D51 (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: CORUNDUM_D51, type code %, sha256 46fa6a309adf9c1c…

85: PHASE CORUNDUM_D51:I % 2 2 3 !
86: CONST CORUNDUM_D51:I : TI+3 : O-2 : !

TiO-15Ham.tdb: CORUNDUM_D51, type code %A, sha256 e95d8422ca5608f3…

74: PHASE CORUNDUM_D51:I %A 2 2 3 !
75: CONST CORUNDUM_D51:I : TI+3 : O-2 : !

TiO-17Ila.tdb: CORUNDUM_D51, type code %A, sha256 8e488837402ac5c9…

78: PHASE CORUNDUM_D51:I %A 2 2 3 !
79: CONST CORUNDUM_D51:I : TI+3 : O-2 : !

TiO-17Yan.tdb: CORUNDUM_D51, type code %A, sha256 f79af7f26633b1d6…

88: PHASE CORUNDUM_D51:I %A 2 2 3 !
89: CONST CORUNDUM_D51:I : TI+3 : O-2 : !

TiO-94Lee.tdb: CORUNDUM_D51, type code %A, sha256 997ef7bf750652c5…

72: PHASE CORUNDUM_D51:I %A 2 2 3 !
73: CONST CORUNDUM_D51:I : TI+3 : O-2 : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase
doi:10.1007/bf02873201 J. L. Murray, H. A. Wriedt, The O−Ti (Oxygen-Titanium) system, JPE 8, 148-165 (1987).
cited as the source of values for this phase

FCC_A1 (O–Ti)

Id: phase:o-ti:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: not stable in 2 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:o-ti:fcc-a1
tdb: tdb:TiO-07Can.tdb:FCC_A1, tdb:TiO-15Ham.tdb:FCC_A1, tdb:TiO-17Ila.tdb:FCC_A1, tdb:TiO-17Yan.tdb:FCC_A1, tdb:TiO-94Lee.tdb:FCC_A1

TDB models of FCC_A1 (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: FCC_A1, type code %A, sha256 46fa6a309adf9c1c…

55: PHASE FCC_A1 %A 2 1 1 !
56: CONST FCC_A1 : TI : O VA% : !

TiO-15Ham.tdb: FCC_A1, type code %A, sha256 e95d8422ca5608f3…

44: PHASE FCC_A1 %A 2 1 1 !
45: CONST FCC_A1 : TI : O VA% : !

TiO-17Ila.tdb: FCC_A1, type code %A, sha256 8e488837402ac5c9…

48: PHASE FCC_A1 %A 2 1 1 !
49: CONST FCC_A1 : TI : O VA% : !

TiO-17Yan.tdb: FCC_A1, type code %A, sha256 f79af7f26633b1d6…

58: PHASE FCC_A1 %A 2 1 1 !
59: CONST FCC_A1 : TI : O VA% : !

TiO-94Lee.tdb: FCC_A1, type code %A, sha256 997ef7bf750652c5…

57: PHASE FCC_A1 %A 2 1 1 !
58: CONST FCC_A1 : TI : O VA% : !

Example references (4 of 4; assessments first):

doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase

GAS (O–Ti)

Id: phase:o-ti:gas; status assigned
Structure: gas; type st:gas; gas; confidence high
Stability: stable in 1 of 2 calculated diagram(s): 300.57–2500 K, x(O) 0.99992–1
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:o-ti:gas
paper: paper:10.1016/j.calphad.2007.01.009:gas
tdb: tdb:TiO-07Can.tdb:GAS, tdb:TiO-15Ham.tdb:GAS, tdb:TiO-17Ila.tdb:GAS, tdb:TiO-17Yan.tdb:GAS, tdb:TiO-94Lee.tdb:GAS

TDB models of GAS (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: GAS, type code %, sha256 46fa6a309adf9c1c…

138: PHASE GAS:G % 1 1 !
139: CONST GAS:G : O O2% O3 TI TI2 TIO TIO2 : !

TiO-15Ham.tdb: GAS, type code %, sha256 e95d8422ca5608f3…

127: PHASE GAS:G % 1 1 !
128: CONST GAS:G : O O2% O3 TI TI2 TIO TIO2 : !

TiO-17Ila.tdb: GAS, type code %, sha256 8e488837402ac5c9…

131: PHASE GAS:G % 1 1 !
132: CONST GAS:G : O O2% O3 TI TI2 TIO TIO2 : !

TiO-17Yan.tdb: GAS, type code %, sha256 f79af7f26633b1d6…

141: PHASE GAS:G % 1 1 !
142: CONST GAS:G : O O2% O3 TI TI2 TIO TIO2 : !

TiO-94Lee.tdb: GAS, type code %, sha256 997ef7bf750652c5…

102: PHASE GAS:G % 1 1 !
103: CONST GAS:G : O O2% O3 TI TI2 TIO TIO2: !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase

HCP_A3 (O–Ti)

Id: phase:o-ti:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 300–2166.47 K, x(O) 0–0.33333
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:o-ti:hcp-a3
paper: paper:10.1016/j.calphad.2007.01.009:hcp
tdb: tdb:TiO-07Can.tdb:HCP_A3, tdb:TiO-15Ham.tdb:HCP_A3, tdb:TiO-17Ila.tdb:HCP_A3, tdb:TiO-17Yan.tdb:HCP_A3, tdb:TiO-94Lee.tdb:HCP_A3

TDB models of HCP_A3 (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: HCP_A3, type code %A, sha256 46fa6a309adf9c1c…

65: PHASE HCP_A3 %A 2 1 0.5 !
66: CONST HCP_A3 : TI : O VA : !

TiO-15Ham.tdb: HCP_A3, type code %A, sha256 e95d8422ca5608f3…

54: PHASE HCP_A3 %A 2 1 0.5 !
55: CONST HCP_A3 : TI : O VA : !

TiO-17Ila.tdb: HCP_A3, type code %A, sha256 8e488837402ac5c9…

58: PHASE HCP_A3 %A 2 1 0.5 !
59: CONST HCP_A3 : TI : O VA : !

TiO-17Yan.tdb: HCP_A3, type code %A, sha256 f79af7f26633b1d6…

68: PHASE HCP_A3 %A 2 1 0.5 !
69: CONST HCP_A3 : TI : O VA : !

TiO-94Lee.tdb: HCP_A3, type code %A, sha256 997ef7bf750652c5…

67: PHASE HCP_A3 %A 2 1 0.5 !
68: CONST HCP_A3 : TI : O VA : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase
doi:10.1007/bf02873201 J. L. Murray, H. A. Wriedt, The O−Ti (Oxygen-Titanium) system, JPE 8, 148-165 (1987).
cited as the source of values for this phase

ION (O–Ti)

Id: phase:o-ti:ion; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 1775.98–2500 K, x(O) 0–0.42818
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:o-ti:ion
tdb: tdb:TiO-17Ila.tdb:ION, tdb:TiO-17Yan.tdb:ION, tdb:TiO-94Lee.tdb:ION

TDB models of ION (3): PHASE and CONSTITUENT statements as written

TiO-17Ila.tdb: ION, type code %, sha256 8e488837402ac5c9…

40: PHASE ION:Y % 2 1 1 !
41: CONST ION:Y : TI+2 TI+3 : O-2 VA O TIO2 : !

TiO-17Yan.tdb: ION, type code %, sha256 f79af7f26633b1d6…

50: PHASE ION:Y % 2 1 1 !
51: CONST ION:Y : TI+2 : O-2 VA O TIO1.5 TIO2 : !

TiO-94Lee.tdb: ION, type code %, sha256 997ef7bf750652c5…

49: PHASE ION:Y % 2 1 1 !
50: CONST ION:Y : TI+2 TI+3 TI+4 : O-2 VA : !

Example references (2 of 2; assessments first):

doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase

LIQUID (O–Ti)

Id: phase:o-ti:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 1937.94–2500 K, x(O) 0–0.6684
Literature: 17 values (17 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:o-ti:liquid
paper: paper:10.1016/j.calphad.2007.01.009:liquid
tdb: tdb:TiO-07Can.tdb:LIQUID, tdb:TiO-15Ham.tdb:LIQUID, tdb:TiO-17Ila.tdb:LIQUID, tdb:TiO-17Yan.tdb:LIQUID, tdb:TiO-94Lee.tdb:LIQUID

TDB models of LIQUID (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: LIQUID, type code %, sha256 46fa6a309adf9c1c…

50: PHASE LIQUID:L % 1 1 !
51: CONST LIQUID:L : O TI TIO TIO1.5 TIO2 : !

TiO-15Ham.tdb: LIQUID, type code %, sha256 e95d8422ca5608f3…

39: PHASE LIQUID:L % 1 1 !
40: CONST LIQUID:L : O TI TIO TIO1.5 TIO2 : !

TiO-17Ila.tdb: LIQUID, type code %, sha256 8e488837402ac5c9…

43: PHASE LIQUID:L % 1 1 !
44: CONST LIQUID:L : O TI TIO TIO1.5 TIO2 : !

TiO-17Yan.tdb: LIQUID, type code %, sha256 f79af7f26633b1d6…

53: PHASE LIQUID:L % 1 1 !
54: CONST LIQUID:L : O TI TIO TIO1.5 TIO2 : !

TiO-94Lee.tdb: LIQUID, type code %, sha256 997ef7bf750652c5…

52: PHASE LIQUID:L % 1 1 !
53: CONST LIQUID:L : TI TIO TIO3/2 TIO2 : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase
doi:10.1007/bf02873201 J. L. Murray, H. A. Wriedt, The O−Ti (Oxygen-Titanium) system, JPE 8, 148-165 (1987).
cited as the source of values for this phase

O2GAS (O–Ti)

Id: phase:o-ti:o2gas; status assigned
Structure: gas; type st:gas; gas; confidence high
Stability: stable in 1 of 2 calculated diagram(s): 300–1185 K, x(O) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:o-ti:o2gas
tdb: tdb:TiO-07Can.tdb:O2GAS, tdb:TiO-15Ham.tdb:O2GAS, tdb:TiO-17Ila.tdb:O2GAS, tdb:TiO-17Yan.tdb:O2GAS, tdb:TiO-94Lee.tdb:O2GAS

TDB models of O2GAS (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: O2GAS, type code %, sha256 46fa6a309adf9c1c…

141: PHASE O2GAS % 1 1 !
142: CONST O2GAS : O2 : !

TiO-15Ham.tdb: O2GAS, type code %, sha256 e95d8422ca5608f3…

130: PHASE O2GAS % 1 1 !
131: CONST O2GAS : O2 : !

TiO-17Ila.tdb: O2GAS, type code %, sha256 8e488837402ac5c9…

134: PHASE O2GAS % 1 1 !
135: CONST O2GAS : O2 : !

TiO-17Yan.tdb: O2GAS, type code %, sha256 f79af7f26633b1d6…

144: PHASE O2GAS % 1 1 !
145: CONST O2GAS : O2 : !

TiO-94Lee.tdb: O2GAS, type code %, sha256 997ef7bf750652c5…

105: PHASE O2GAS % 1 1 !
106: CONST O2GAS : O2 : !

Example references (4 of 4; assessments first):

doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase

TI10O19 (O–Ti)

Id: phase:o-ti:ti10o19; status assigned
Structure: Ti10O19 · aP58 · P-1 (2); type st:ti10o19-ap58; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 1 of 1 calculated diagram(s): 300–1971.73 K, x(O) 0.65517–0.65517
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:o-ti:ti10o19
paper: paper:10.1016/j.calphad.2007.01.009:Ti10O19
tdb: tdb:TiO-07Can.tdb:TI10O19, tdb:TiO-15Ham.tdb:TI10O19, tdb:TiO-17Ila.tdb:TI10O19, tdb:TiO-17Yan.tdb:TI10O19

TDB models of TI10O19 (4): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TI10O19, type code %, sha256 46fa6a309adf9c1c…

125: PHASE TI10O19:I % 3 2 8 19 !
126: CONST TI10O19:I : TI+3 : TI+4 : O-2 : !

TiO-15Ham.tdb: TI10O19, type code %, sha256 e95d8422ca5608f3…

114: PHASE TI10O19:I % 3 2 8 19 !
115: CONST TI10O19:I : TI+3 : TI+4 : O-2 : !

TiO-17Ila.tdb: TI10O19, type code %, sha256 8e488837402ac5c9…

118: PHASE TI10O19:I % 3 2 8 19 !
119: CONST TI10O19:I : TI+3 : TI+4 : O-2 : !

TiO-17Yan.tdb: TI10O19, type code %, sha256 f79af7f26633b1d6…

128: PHASE TI10O19:I % 3 2 8 19 !
129: CONST TI10O19:I : TI+3 : TI+4 : O-2 : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase

TI20O39 (O–Ti)

Id: phase:o-ti:ti20o39; status assigned
Structure: Ti20O39 · aP118 · P-1 (2); type st:ti20o39-ap118; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 1 of 1 calculated diagram(s): 469.51–2029.55 K, x(O) 0.66102–0.66102
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:o-ti:ti20o39
paper: paper:10.1016/j.calphad.2007.01.009:Ti20O39
tdb: tdb:TiO-07Can.tdb:TI20O39, tdb:TiO-15Ham.tdb:TI20O39, tdb:TiO-17Ila.tdb:TI20O39, tdb:TiO-17Yan.tdb:TI20O39

TDB models of TI20O39 (4): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TI20O39, type code %, sha256 46fa6a309adf9c1c…

130: PHASE TI20O39:I % 3 2 18 39 !
131: CONST TI20O39:I : TI+3 : TI+4 : O-2 : !

TiO-15Ham.tdb: TI20O39, type code %, sha256 e95d8422ca5608f3…

119: PHASE TI20O39:I % 3 2 18 39 !
120: CONST TI20O39:I : TI+3 : TI+4 : O-2 : !

TiO-17Ila.tdb: TI20O39, type code %, sha256 8e488837402ac5c9…

123: PHASE TI20O39:I % 3 2 18 39 !
124: CONST TI20O39:I : TI+3 : TI+4 : O-2 : !

TiO-17Yan.tdb: TI20O39, type code %, sha256 f79af7f26633b1d6…

133: PHASE TI20O39:I % 3 2 18 39 !
134: CONST TI20O39:I : TI+3 : TI+4 : O-2 : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase

TI3O2 (O–Ti)

Id: phase:o-ti:ti3o2; status assigned
Structure: (Ti3O2) · hP5 · P6/mmm (191); type st:ti3o2-hp5; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 1 of 2 calculated diagram(s): 300–335 K, x(O) 0.4–0.4
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:o-ti:ti3o2
paper: paper:10.1016/j.calphad.2007.01.009:Ti3O2
tdb: tdb:TiO-07Can.tdb:TI3O2, tdb:TiO-15Ham.tdb:TI3O2, tdb:TiO-17Ila.tdb:TI3O2, tdb:TiO-17Yan.tdb:TI3O2, tdb:TiO-94Lee.tdb:TI3O2

TDB models of TI3O2 (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TI3O2, type code %, sha256 46fa6a309adf9c1c…

70: PHASE TI3O2:I % 3 2 1 2 !
71: CONST TI3O2:I : TI+2 : TI : O-2 : !

TiO-15Ham.tdb: TI3O2, type code %, sha256 e95d8422ca5608f3…

59: PHASE TI3O2:I % 3 2 1 2 !
60: CONST TI3O2:I : TI+2 : TI : O-2 : !

TiO-17Ila.tdb: TI3O2, type code %, sha256 8e488837402ac5c9…

63: PHASE TI3O2:I % 3 2 1 2 !
64: CONST TI3O2:I : TI+2 : TI : O-2 : !

TiO-17Yan.tdb: TI3O2, type code %, sha256 f79af7f26633b1d6…

73: PHASE TI3O2:I % 3 2 1 2 !
74: CONST TI3O2:I : TI+2 : TI : O-2 : !

TiO-94Lee.tdb: TI3O2, type code %, sha256 997ef7bf750652c5…

82: PHASE TI3O2:I % 3 1 2 2 !
83: CONST TI3O2:I : TI : TI+2 : O-2 : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase
doi:10.1007/bf02873201 J. L. Murray, H. A. Wriedt, The O−Ti (Oxygen-Titanium) system, JPE 8, 148-165 (1987).
cited as the source of values for this phase

TI3O5 (O–Ti)

Id: phase:o-ti:ti3o5; status needs_review
No structure assigned. Why: no_structure_token; off_stoichiometric_model; sgte_mmc2_rows_disagree
Candidate (literature_printed): Ta3N5 · oC32 — printed with a label mapped to this phase
Candidate (sgte_mmc2): Ta3N5 · oC32 · Cmcm (63) — Hallstedt 2025 mmc2 row for TI3O5: Ti3O5 (beta ?)
Candidate (sgte_mmc2): Ti3O5 · mC32 · C2/m (12) — Hallstedt 2025 mmc2 row for TI3O5: Ti3O5 (alpha ?)
Candidate (sgte_mmc2): V3O5-ht · mC32 · C2/c (15) — Hallstedt 2025 mmc2 row for TI3O5: Ti3O5 (gamma ?)
Candidate (tdb_comment): Ti3O5 · mC32 · C2/m — TiO-07Can.tdb: 'Prototype Ti3O5 (mC32, C2/m)'
Candidate (tdb_comment): Ti3O5 · mC32 · C2/m — TiO-15Ham.tdb: 'Prototype Ti3O5 (mC32, C2/m)'
Candidate (tdb_comment): Ti3O5 · mC32 · C2/m — TiO-17Ila.tdb: 'Prototype Ti3O5 (mC32, C2/m)'
Candidate (tdb_comment): Ti3O5 · mC32 · C2/m — TiO-17Yan.tdb: 'Prototype Ti3O5 (mC32, C2/m)'
Stability: stable in 1 of 2 calculated diagram(s): 785.4–2046.49 K, x(O) 0.625–0.625
Literature: 9 values (9 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:o-ti:ti3o5
paper: paper:10.1016/j.calphad.2007.01.009:Ti3O5
tdb: tdb:TiO-07Can.tdb:TI3O5, tdb:TiO-15Ham.tdb:TI3O5, tdb:TiO-17Ila.tdb:TI3O5, tdb:TiO-17Yan.tdb:TI3O5, tdb:TiO-94Lee.tdb:TI3O5

TDB models of TI3O5 (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TI3O5, type code %, sha256 46fa6a309adf9c1c…

90: PHASE TI3O5:I % 3 2 1 5 !
91: CONST TI3O5:I : TI+3 : TI+4 : O-2 : !

TiO-15Ham.tdb: TI3O5, type code %, sha256 e95d8422ca5608f3…

79: PHASE TI3O5:I % 3 2 1 5 !
80: CONST TI3O5:I : TI+3 : TI+4 : O-2 : !

TiO-17Ila.tdb: TI3O5, type code %, sha256 8e488837402ac5c9…

83: PHASE TI3O5:I % 3 2 1 5 !
84: CONST TI3O5:I : TI+3 : TI+4 : O-2 : !

TiO-17Yan.tdb: TI3O5, type code %, sha256 f79af7f26633b1d6…

93: PHASE TI3O5:I % 3 2 1 5 !
94: CONST TI3O5:I : TI+3 : TI+4 : O-2 : !

TiO-94Lee.tdb: TI3O5, type code %, sha256 997ef7bf750652c5…

94: PHASE TI3O5:I % 3 2 1 5 !
95: CONST TI3O5:I : TI+3 : TI+4 : O-2 : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase
doi:10.1007/bf02873201 J. L. Murray, H. A. Wriedt, The O−Ti (Oxygen-Titanium) system, JPE 8, 148-165 (1987).
cited as the source of values for this phase

TI4O7 (O–Ti)

Id: phase:o-ti:ti4o7; status needs_review
No structure assigned. Why: no_structure_token; off_stoichiometric_model
Candidate (tdb_comment): Ti4O7 · aP22 · P-1 — TiO-07Can.tdb: 'Prototype Ti4O7 (aP22, P-1)'
Candidate (tdb_comment): Ti4O7 · aP22 · P-1 — TiO-15Ham.tdb: 'Prototype Ti4O7 (aP22, P-1)'
Candidate (tdb_comment): Ti4O7 · aP22 · P-1 — TiO-17Ila.tdb: 'Prototype Ti4O7 (aP22, P-1)'
Candidate (tdb_comment): Ti4O7 · aP22 · P-1 — TiO-17Yan.tdb: 'Prototype Ti4O7 (aP22, P-1)'
Stability: stable in 1 of 1 calculated diagram(s): 300–1940.4 K, x(O) 0.63636–0.63636
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:o-ti:ti4o7
paper: paper:10.1016/j.calphad.2007.01.009:Ti4O7
tdb: tdb:TiO-07Can.tdb:TI4O7, tdb:TiO-15Ham.tdb:TI4O7, tdb:TiO-17Ila.tdb:TI4O7, tdb:TiO-17Yan.tdb:TI4O7

TDB models of TI4O7 (4): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TI4O7, type code %, sha256 46fa6a309adf9c1c…

95: PHASE TI4O7:I % 3 2 2 7 !
96: CONST TI4O7:I : TI+3 : TI+4 : O-2 : !

TiO-15Ham.tdb: TI4O7, type code %, sha256 e95d8422ca5608f3…

84: PHASE TI4O7:I % 3 2 2 7 !
85: CONST TI4O7:I : TI+3 : TI+4 : O-2 : !

TiO-17Ila.tdb: TI4O7, type code %, sha256 8e488837402ac5c9…

88: PHASE TI4O7:I % 3 2 2 7 !
89: CONST TI4O7:I : TI+3 : TI+4 : O-2 : !

TiO-17Yan.tdb: TI4O7, type code %, sha256 f79af7f26633b1d6…

98: PHASE TI4O7:I % 3 2 2 7 !
99: CONST TI4O7:I : TI+3 : TI+4 : O-2 : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase
doi:10.1007/bf02873201 J. L. Murray, H. A. Wriedt, The O−Ti (Oxygen-Titanium) system, JPE 8, 148-165 (1987).
cited as the source of values for this phase

TI5O9 (O–Ti)

Id: phase:o-ti:ti5o9; status assigned
Structure: Ti5O9 · aP28 · P-1 (2); type st:ti5o9-ap28; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 1 of 1 calculated diagram(s): 300.4–1950.45 K, x(O) 0.64286–0.64286
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:o-ti:ti5o9
paper: paper:10.1016/j.calphad.2007.01.009:Ti5O9
tdb: tdb:TiO-07Can.tdb:TI5O9, tdb:TiO-15Ham.tdb:TI5O9, tdb:TiO-17Ila.tdb:TI5O9, tdb:TiO-17Yan.tdb:TI5O9

TDB models of TI5O9 (4): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TI5O9, type code %, sha256 46fa6a309adf9c1c…

100: PHASE TI5O9:I % 3 2 3 9 !
101: CONST TI5O9:I : TI+3 : TI+4 : O-2 : !

TiO-15Ham.tdb: TI5O9, type code %, sha256 e95d8422ca5608f3…

89: PHASE TI5O9:I % 3 2 3 9 !
90: CONST TI5O9:I : TI+3 : TI+4 : O-2 : !

TiO-17Ila.tdb: TI5O9, type code %, sha256 8e488837402ac5c9…

93: PHASE TI5O9:I % 3 2 3 9 !
94: CONST TI5O9:I : TI+3 : TI+4 : O-2 : !

TiO-17Yan.tdb: TI5O9, type code %, sha256 f79af7f26633b1d6…

103: PHASE TI5O9:I % 3 2 3 9 !
104: CONST TI5O9:I : TI+3 : TI+4 : O-2 : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase
doi:10.1007/bf02873201 J. L. Murray, H. A. Wriedt, The O−Ti (Oxygen-Titanium) system, JPE 8, 148-165 (1987).
cited as the source of values for this phase

TI6O11 (O–Ti)

Id: phase:o-ti:ti6o11; status needs_review
No structure assigned. Why: no_structure_token; off_stoichiometric_model
Candidate (tdb_comment): Ti6O11 · aP34 · P-1 — TiO-07Can.tdb: 'Prototype Ti6O11 (aP34, P-1)'
Candidate (tdb_comment): Ti6O11 · aP34 · P-1 — TiO-15Ham.tdb: 'Prototype Ti6O11 (aP34, P-1)'
Candidate (tdb_comment): Ti6O11 · aP34 · P-1 — TiO-17Ila.tdb: 'Prototype Ti6O11 (aP34, P-1)'
Candidate (tdb_comment): Ti6O11 · aP34 · P-1 — TiO-17Yan.tdb: 'Prototype Ti6O11 (aP34, P-1)'
Stability: stable in 1 of 1 calculated diagram(s): 300.45–1954.69 K, x(O) 0.64706–0.64706
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:o-ti:ti6o11
paper: paper:10.1016/j.calphad.2007.01.009:Ti6O11
tdb: tdb:TiO-07Can.tdb:TI6O11, tdb:TiO-15Ham.tdb:TI6O11, tdb:TiO-17Ila.tdb:TI6O11, tdb:TiO-17Yan.tdb:TI6O11

TDB models of TI6O11 (4): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TI6O11, type code %, sha256 46fa6a309adf9c1c…

105: PHASE TI6O11:I % 3 2 4 11 !
106: CONST TI6O11:I : TI+3 : TI+4 : O-2 : !

TiO-15Ham.tdb: TI6O11, type code %, sha256 e95d8422ca5608f3…

94: PHASE TI6O11:I % 3 2 4 11 !
95: CONST TI6O11:I : TI+3 : TI+4 : O-2 : !

TiO-17Ila.tdb: TI6O11, type code %, sha256 8e488837402ac5c9…

98: PHASE TI6O11:I % 3 2 4 11 !
99: CONST TI6O11:I : TI+3 : TI+4 : O-2 : !

TiO-17Yan.tdb: TI6O11, type code %, sha256 f79af7f26633b1d6…

108: PHASE TI6O11:I % 3 2 4 11 !
109: CONST TI6O11:I : TI+3 : TI+4 : O-2 : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase

TI7O13 (O–Ti)

Id: phase:o-ti:ti7o13; status assigned
Structure: Ti7O13 · aP40 · P-1 (2); type st:ti7o13-ap40; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 1 of 1 calculated diagram(s): 300.1–1957.6 K, x(O) 0.65–0.65
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:o-ti:ti7o13
paper: paper:10.1016/j.calphad.2007.01.009:Ti7O13
tdb: tdb:TiO-07Can.tdb:TI7O13, tdb:TiO-15Ham.tdb:TI7O13, tdb:TiO-17Ila.tdb:TI7O13, tdb:TiO-17Yan.tdb:TI7O13

TDB models of TI7O13 (4): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TI7O13, type code %, sha256 46fa6a309adf9c1c…

110: PHASE TI7O13:I % 3 2 5 13 !
111: CONST TI7O13:I : TI+3 : TI+4 : O-2 : !

TiO-15Ham.tdb: TI7O13, type code %, sha256 e95d8422ca5608f3…

99: PHASE TI7O13:I % 3 2 5 13 !
100: CONST TI7O13:I : TI+3 : TI+4 : O-2 : !

TiO-17Ila.tdb: TI7O13, type code %, sha256 8e488837402ac5c9…

103: PHASE TI7O13:I % 3 2 5 13 !
104: CONST TI7O13:I : TI+3 : TI+4 : O-2 : !

TiO-17Yan.tdb: TI7O13, type code %, sha256 f79af7f26633b1d6…

113: PHASE TI7O13:I % 3 2 5 13 !
114: CONST TI7O13:I : TI+3 : TI+4 : O-2 : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase

TI8O15 (O–Ti)

Id: phase:o-ti:ti8o15; status needs_review
No structure assigned. Why: no_structure_token; off_stoichiometric_model
Candidate (tdb_comment): Ti8O15 · aP46 · P-1 — TiO-07Can.tdb: 'Prototype Ti8O15 (aP46, P-1)'
Candidate (tdb_comment): Ti8O15 · aP46 · P-1 — TiO-15Ham.tdb: 'Prototype Ti8O15 (aP46, P-1)'
Candidate (tdb_comment): Ti8O15 · aP46 · P-1 — TiO-17Ila.tdb: 'Prototype Ti8O15 (aP46, P-1)'
Candidate (tdb_comment): Ti8O15 · aP46 · P-1 — TiO-17Yan.tdb: 'Prototype Ti8O15 (aP46, P-1)'
Stability: stable in 1 of 1 calculated diagram(s): 300.1–1962.46 K, x(O) 0.65217–0.65217
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:o-ti:ti8o15
paper: paper:10.1016/j.calphad.2007.01.009:Ti8O15
tdb: tdb:TiO-07Can.tdb:TI8O15, tdb:TiO-15Ham.tdb:TI8O15, tdb:TiO-17Ila.tdb:TI8O15, tdb:TiO-17Yan.tdb:TI8O15

TDB models of TI8O15 (4): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TI8O15, type code %, sha256 46fa6a309adf9c1c…

115: PHASE TI8O15:I % 3 2 6 15 !
116: CONST TI8O15:I : TI+3 : TI+4 : O-2 : !

TiO-15Ham.tdb: TI8O15, type code %, sha256 e95d8422ca5608f3…

104: PHASE TI8O15:I % 3 2 6 15 !
105: CONST TI8O15:I : TI+3 : TI+4 : O-2 : !

TiO-17Ila.tdb: TI8O15, type code %, sha256 8e488837402ac5c9…

108: PHASE TI8O15:I % 3 2 6 15 !
109: CONST TI8O15:I : TI+3 : TI+4 : O-2 : !

TiO-17Yan.tdb: TI8O15, type code %, sha256 f79af7f26633b1d6…

118: PHASE TI8O15:I % 3 2 6 15 !
119: CONST TI8O15:I : TI+3 : TI+4 : O-2 : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase

TI9O17 (O–Ti)

Id: phase:o-ti:ti9o17; status assigned
Structure: Ti9O17 · aP52 · P-1 (2); type st:ti9o17-ap52; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 1 of 1 calculated diagram(s): 300.48–1965.48 K, x(O) 0.65385–0.65385
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:o-ti:ti9o17
paper: paper:10.1016/j.calphad.2007.01.009:Ti9O17
tdb: tdb:TiO-07Can.tdb:TI9O17, tdb:TiO-15Ham.tdb:TI9O17, tdb:TiO-17Ila.tdb:TI9O17, tdb:TiO-17Yan.tdb:TI9O17

TDB models of TI9O17 (4): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TI9O17, type code %, sha256 46fa6a309adf9c1c…

120: PHASE TI9O17:I % 3 2 7 17 !
121: CONST TI9O17:I : TI+3 : TI+4 : O-2 : !

TiO-15Ham.tdb: TI9O17, type code %, sha256 e95d8422ca5608f3…

109: PHASE TI9O17:I % 3 2 7 17 !
110: CONST TI9O17:I : TI+3 : TI+4 : O-2 : !

TiO-17Ila.tdb: TI9O17, type code %, sha256 8e488837402ac5c9…

113: PHASE TI9O17:I % 3 2 7 17 !
114: CONST TI9O17:I : TI+3 : TI+4 : O-2 : !

TiO-17Yan.tdb: TI9O17, type code %, sha256 f79af7f26633b1d6…

123: PHASE TI9O17:I % 3 2 7 17 !
124: CONST TI9O17:I : TI+3 : TI+4 : O-2 : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase

TIO_ALPHA (O–Ti)

Id: phase:o-ti:tio-alpha; status assigned
Structure: alpha-TiO · mC20 · C2/m (12); type st:alpha-tio-mc20; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 2 of 2 calculated diagram(s): 300–1211.07 K, x(O) 0.5–0.5
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:o-ti:tio-alpha
paper: paper:10.1016/j.calphad.2007.01.009:α-TiO
tdb: tdb:TiO-07Can.tdb:TIO_ALPHA, tdb:TiO-15Ham.tdb:TIO_ALPHA, tdb:TiO-17Ila.tdb:TIO_ALPHA, tdb:TiO-17Yan.tdb:TIO_ALPHA, tdb:TiO-94Lee.tdb:TIO_ALPHA

TDB models of TIO_ALPHA (5): PHASE and CONSTITUENT statements as written

TiO-07Can.tdb: TIO_ALPHA, type code %, sha256 46fa6a309adf9c1c…

80: PHASE TIO_ALPHA:I % 2 1 1 !
81: CONST TIO_ALPHA:I : TI+2 : O-2 : !

TiO-15Ham.tdb: TIO_ALPHA, type code %, sha256 e95d8422ca5608f3…

69: PHASE TIO_ALPHA:I % 2 1 1 !
70: CONST TIO_ALPHA:I : TI+2 : O-2 : !

TiO-17Ila.tdb: TIO_ALPHA, type code %, sha256 8e488837402ac5c9…

73: PHASE TIO_ALPHA:I % 2 1 1 !
74: CONST TIO_ALPHA:I : TI+2 : O-2 : !

TiO-17Yan.tdb: TIO_ALPHA, type code %, sha256 f79af7f26633b1d6…

83: PHASE TIO_ALPHA:I % 2 1 1 !
84: CONST TIO_ALPHA:I : TI+2 : O-2 : !

TiO-94Lee.tdb: TIO_ALPHA, type code %, sha256 997ef7bf750652c5…

87: PHASE TIO_ALPHA:I % 2 1 1 !
88: CONST TIO_ALPHA:I : TI+2 : O-2 : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2007.01.009 M. Cancarevic, M. Zinkevich, F. Aldinger, Thermodynamic description of the Ti–O system using the associate model for the liquid phase, Calphad 31, 330-342 (2007).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-016-0509-4 Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017).
assessment that models this phase
doi:10.1016/j.jallcom.2017.05.326 Yang Yang, Huahai Mao, Hai-Lin Chen, Malin Selleby, An assessment of the Ti-V-O system, Journal of Alloys and Compounds 722, 365-374 (2017).
assessment that models this phase
doi:10.3139/146.111210 M. Hampl, R. Schmid-Fetzer, Int. J. Mater. Res., 106, 439-53(2015).
assessment that models this phase
doi:10.1007/bf02873201 J. L. Murray, H. A. Wriedt, The O−Ti (Oxygen-Titanium) system, JPE 8, 148-165 (1987).
cited as the source of values for this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735970
R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23736065

Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

@misc{orchid_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}