Cu–Si phases

17 phases (tier A 6, liquid 1, needs_review 10); 16 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 · Cu–Si system page · Markdown · field reference

Phases of the Cu–Si system (17)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
DIAMOND_A4 phase:cu-si:a4-diamond	C (diamond) · A4 · cF8 · Fd-3m (227)	tier A: standard phase name	stable in 9 of 9 calculated diagram(s): 300–2499.91 K, x(Si) 0.99998–1	21	9
BCC_A2 phase:cu-si:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 9 of 9 calculated diagram(s): 1053.89–1126.33 K, x(Si) 0.13712–0.17277	44	9
CU15SI4 phase:cu-si:cu15si4		needs_review	stable in 5 of 5 calculated diagram(s): 300–1073.8 K, x(Si) 0.2105–0.21053	20	5
CU15SI4_D86 phase:cu-si:cu15si4-d86	Cu15Si4 · D8_6 · cI76 · I-43d (220)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1074.57 K, x(Si) 0.21053–0.21053	11	3
CU19SI6 phase:cu-si:cu19si6		needs_review	stable in 5 of 5 calculated diagram(s): 300–1131.85 K, x(Si) 0.24–0.24	11	5
CU33SI7_HT phase:cu-si:cu33si7		needs_review	stable in 7 of 7 calculated diagram(s): 955.61–1097.06 K, x(Si) 0.17148–0.17904	18	7
CU33SI7_A13 phase:cu-si:cu33si7-a13	beta-Mn · A13 · cP20 · P4_132 (213)	tier A: standard phase name	stable in 6 of 6 calculated diagram(s): 300–1007.32 K, x(Si) 0.17191–0.17545	22	6
CU33SI7-HT phase:cu-si:cu33si7-ht		needs_review	no calculated diagram	47	0
CU3SI_HT phase:cu-si:cu3si-ht		needs_review	stable in 4 of 4 calculated diagram(s): 827.94–1132.37 K, x(Si) 0.23719–0.24976	36	4
CU3SI_LT phase:cu-si:cu3si-lt		needs_review	stable in 4 of 4 calculated diagram(s): 300–842 K, x(Si) 0.23–0.2436	4	4
CU3SI_MT phase:cu-si:cu3si-mt		needs_review	stable in 4 of 4 calculated diagram(s): 740–893.46 K, x(Si) 0.235–0.2451	15	4
CU4SI phase:cu-si:cu4si		needs_review	stable in 1 of 1 calculated diagram(s): 696.51–1077.95 K, x(Si) 0.2–0.2	0	1
CU56SI11_A13 phase:cu-si:cu56si11-a13		needs_review	stable in 3 of 3 calculated diagram(s): 300–1008.37 K, x(Si) 0.16418–0.1642	9	3
CU9SI2 phase:cu-si:cu9si2		needs_review	stable in 2 of 2 calculated diagram(s): 981.56–1097.01 K, x(Si) 0.18182–0.18182	0	2
FCC_A1 phase:cu-si:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 9 of 9 calculated diagram(s): 300–1360.77 K, x(Si) 0–0.11612	33	9
HCP_A3 phase:cu-si:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 9 of 9 calculated diagram(s): 822.83–1115.92 K, x(Si) 0.10482–0.14356	43	9
LIQUID phase:cu-si:liquid	liquid	liquid	stable in 9 of 9 calculated diagram(s): 1073.66–2500 K, x(Si) 0–1	48	9

DIAMOND_A4 (Cu–Si)

Id: phase:cu-si:a4-diamond; status assigned
Structure: C (diamond) · A4 · cF8 · Fd-3m (227); type st:a4-c-diamond-cf8; tier A: standard phase name; confidence high
Stability: stable in 9 of 9 calculated diagram(s): 300–2499.91 K, x(Si) 0.99998–1
Literature: 21 values (21 accepted) from 3 papers
Interactive: phase registry entry

Names (14): corpus: corpus:phase:cu-si:a4-diamond, corpus:phase:cu-si:diamond-a4
paper: paper:10.1007/s11669-024-01160-5:(Si), paper:10.1016/j.jct.2012.07.025:Diamond_A4(Si), paper:10.1016/s0925-8388(00)00983-x:(Si)
tdb: tdb:CuSi-00Yan.tdb:DIAMOND_A4, tdb:CuSi-08Shi.tdb:DIAMOND_A4, tdb:CuSi-13Gie.tdb:DIAMOND_A4, tdb:CuSi-16Hal.tdb:DIAMOND_A4, tdb:CuSi-19Sol.tdb:DIAMOND_A4, tdb:CuSi-24Kro.tdb:DIAMOND_A4, tdb:CuSi-98Jac.tdb:DIAMOND_A4, tdb:CuSi-99Fri-LB.tdb:DIAMOND_A4, tdb:CuSi-99Fri-alt.tdb:DIAMOND_A4

TDB models of DIAMOND_A4 (9): PHASE and CONSTITUENT statements as written

CuSi-00Yan.tdb: DIAMOND_A4, type code %, sha256 f728174b3aa223c6…

45: PHASE DIAMOND_A4 % 1 1 !
46: CONST DIAMOND_A4 : SI : !

CuSi-08Shi.tdb: DIAMOND_A4, type code %, sha256 9e7184ce9a8ca0c4…

43: PHASE DIAMOND_A4 % 1 1 !
44: CONST DIAMOND_A4 : SI : !

CuSi-13Gie.tdb: DIAMOND_A4, type code %, sha256 5471b8fafdfddb9a…

47: PHASE DIAMOND_A4 % 1 1 !
48: CONST DIAMOND_A4 : SI : !

CuSi-16Hal.tdb: DIAMOND_A4, type code %, sha256 858bf3eb9583bf24…

44: PHASE DIAMOND_A4 % 2 1 1 !
45: CONST DIAMOND_A4 : SI : CU VA : !

CuSi-19Sol.tdb: DIAMOND_A4, type code %, sha256 f7b1e3d5d7f2e10c…

47: PHASE DIAMOND_A4 % 1 1 !
48: CONST DIAMOND_A4 : SI : !

CuSi-24Kro.tdb: DIAMOND_A4, type code %, sha256 649b0d49d2e75ff2…

45: PHASE DIAMOND_A4 % 2 1 1 !
46: CONST DIAMOND_A4 : SI : CU VA : !

CuSi-98Jac.tdb: DIAMOND_A4, type code %, sha256 8f97b6dac06196e8…

49: PHASE DIAMOND_A4 % 1 1 !
50: CONST DIAMOND_A4 : SI : !

CuSi-99Fri-LB.tdb: DIAMOND_A4, type code %, sha256 1dbb097e2303a64d…

56: PHASE DIAMOND_A4 % 1 1 !
57: CONST DIAMOND_A4 : SI : !

CuSi-99Fri-alt.tdb: DIAMOND_A4, type code %, sha256 290a3b7d57ad7f6c…

57: PHASE DIAMOND_A4 % 1 1 !
58: CONST DIAMOND_A4 : SI : !

Example references (8 of 8; assessments first):

doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/S0925-8388(00)00983-X X. Yan, Y.A. Chang, J. Alloys Compd., 308, 221-29(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2008.05.003 D. Shin, J.E. Saal, Z.-K. Liu, Calphad, 32, 520-26(2008).
assessment that models this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase
doi:10.1016/s1359-6454(01)00187-2 G. Ghosh, Dissolution and interfacial reactions of thin-film Ti/Ni/Ag metallizations in solder joints, Acta Materialia 49, 2609-2624 (2001).
cited as the source of values for this phase

BCC_A2 (Cu–Si)

Id: phase:cu-si: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 9 of 9 calculated diagram(s): 1053.89–1126.33 K, x(Si) 0.13712–0.17277
Literature: 44 values (44 accepted) from 3 papers
Interactive: phase registry entry

Names (14): corpus: corpus:phase:cu-si:bcc-a2
paper: paper:10.1007/s11669-024-01160-5:β(CuSi), paper:10.1016/j.jct.2012.07.025:β, paper:10.1016/s0925-8388(00)00983-x:β
system_alias: system_alias:cu-si:beta
tdb: tdb:CuSi-00Yan.tdb:BCC_A2, tdb:CuSi-08Shi.tdb:BCC_A2, tdb:CuSi-13Gie.tdb:BCC_A2, tdb:CuSi-16Hal.tdb:BCC_A2, tdb:CuSi-19Sol.tdb:BCC_A2, tdb:CuSi-24Kro.tdb:BCC_A2, tdb:CuSi-98Jac.tdb:BCC_A2, tdb:CuSi-99Fri-LB.tdb:BCC_A2, tdb:CuSi-99Fri-alt.tdb:BCC_A2

TDB models of BCC_A2 (9): PHASE and CONSTITUENT statements as written

CuSi-00Yan.tdb: BCC_A2, type code %B, sha256 f728174b3aa223c6…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : CU SI : VA : !

CuSi-08Shi.tdb: BCC_A2, type code %B, sha256 9e7184ce9a8ca0c4…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : CU SI : VA : !

CuSi-13Gie.tdb: BCC_A2, type code %B, sha256 5471b8fafdfddb9a…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : CU SI : VA : !

CuSi-16Hal.tdb: BCC_A2, type code %B, sha256 858bf3eb9583bf24…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : CU SI : VA : !

CuSi-19Sol.tdb: BCC_A2, type code %B, sha256 f7b1e3d5d7f2e10c…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : CU SI : VA : !

CuSi-24Kro.tdb: BCC_A2, type code %B, sha256 649b0d49d2e75ff2…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : CU SI : VA : !

CuSi-98Jac.tdb: BCC_A2, type code %B, sha256 8f97b6dac06196e8…

39: PHASE BCC_A2 %B 2 1 3 !
40: CONST BCC_A2 : CU SI : VA : !

CuSi-99Fri-LB.tdb: BCC_A2, type code %B, sha256 1dbb097e2303a64d…

46: PHASE BCC_A2 %B 2 1 3 !
47: CONST BCC_A2 : CU SI : VA : !

CuSi-99Fri-alt.tdb: BCC_A2, type code %B, sha256 290a3b7d57ad7f6c…

47: PHASE BCC_A2 %B 2 1 3 !
48: CONST BCC_A2 : CU SI : VA : !

Example references (7 of 7; assessments first):

doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(00)00983-X X. Yan, Y.A. Chang, J. Alloys Compd., 308, 221-29(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.calphad.2008.05.003 D. Shin, J.E. Saal, Z.-K. Liu, Calphad, 32, 520-26(2008).
assessment that models this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase

CU15SI4 (Cu–Si)

Id: phase:cu-si:cu15si4; status needs_review
No structure assigned. Why: models_disagree_on_composition; no_structure_token
Candidate (dft_mp): I-43d (220) — on-hull MP Cu15Si4 at x(SI)=0.2105
Candidate (dft_oqmd): I-43d (220) — on-hull OQMD Cu15 Si4 at x(SI)=0.2105
Candidate (literature_printed): Cu15Si4 · cI76 — printed with a label mapped to this phase
Candidate (tdb_comment): Cu15Si4 · cI76 · I-43d — CuSi-00Yan.tdb: 'Prototype Cu15Si4 (cI76, I-43d), epsilon'
Candidate (tdb_comment): Cu15Si4 · cI76 · I-43d — CuSi-08Shi.tdb: 'Prototype Cu15Si4 (cI76, I-43d), epsilon'
Candidate (tdb_comment): Cu15Si4 · cI76 · I-43d — CuSi-13Gie.tdb: 'Prototype Cu15Si4 (cI76, I-43d), epsilon'
Candidate (tdb_comment): Cu15Si4 · cI76 · I-43d — CuSi-99Fri-LB.tdb: 'Prototype Cu15Si4 (cI76, I-43d), epsilon'
Candidate (tdb_comment): Cu15Si4 · cI76 · I-43d — CuSi-99Fri-alt.tdb: 'Prototype Cu15Si4 (cI76, I-43d), epsilon'
Stability: stable in 5 of 5 calculated diagram(s): 300–1073.8 K, x(Si) 0.2105–0.21053
Literature: 20 values (20 accepted) from 3 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:cu-si:cu15si4
paper: paper:10.1016/j.jallcom.2019.06.236:ε-Cu15Si4, paper:10.1016/j.jct.2012.07.025:ε, paper:10.1016/s0925-8388(00)00983-x:ε
system_alias: system_alias:cu-si:epsilon
tdb: tdb:CuSi-00Yan.tdb:CU15SI4, tdb:CuSi-08Shi.tdb:CU15SI4, tdb:CuSi-13Gie.tdb:CU15SI4, tdb:CuSi-99Fri-LB.tdb:CU15SI4, tdb:CuSi-99Fri-alt.tdb:CU15SI4

TDB models of CU15SI4 (5): PHASE and CONSTITUENT statements as written

CuSi-00Yan.tdb: CU15SI4, type code %, sha256 f728174b3aa223c6…

60: PHASE CU15SI4 % 2 0.7895 0.2105 !
61: CONST CU15SI4 : CU : SI : !

CuSi-08Shi.tdb: CU15SI4, type code %, sha256 9e7184ce9a8ca0c4…

58: PHASE CU15SI4 % 2 0.7895 0.2105 !
59: CONST CU15SI4 : CU : SI : !

CuSi-13Gie.tdb: CU15SI4, type code %, sha256 5471b8fafdfddb9a…

62: PHASE CU15SI4 % 2 15 4 !
63: CONST CU15SI4 : CU : SI : !

CuSi-99Fri-LB.tdb: CU15SI4, type code %, sha256 1dbb097e2303a64d…

71: PHASE CU15SI4 % 2 15 4 !
72: CONST CU15SI4 : CU : SI : !

CuSi-99Fri-alt.tdb: CU15SI4, type code %, sha256 290a3b7d57ad7f6c…

72: PHASE CU15SI4 % 2 15 4 !
73: CONST CU15SI4 : CU : SI : !

Example references (5 of 5; assessments first):

doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(00)00983-X X. Yan, Y.A. Chang, J. Alloys Compd., 308, 221-29(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2008.05.003 D. Shin, J.E. Saal, Z.-K. Liu, Calphad, 32, 520-26(2008).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
reports values for this phase

CU15SI4_D86 (Cu–Si)

Id: phase:cu-si:cu15si4-d86; status assigned
Structure: Cu15Si4 · D8_6 · cI76 · I-43d (220); type st:d8-6-cu15si4-ci76; tier A: standard phase name; confidence high
Stoichiometry: Cu 0.7895, Si 0.2105
Stability: stable in 3 of 3 calculated diagram(s): 300–1074.57 K, x(Si) 0.21053–0.21053
Literature: 11 values (11 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:cu-si:cu15si4-d86
paper: paper:10.1007/s11669-024-01160-5:ε
system_alias: system_alias:cu-si:epsilon
tdb: tdb:CuSi-16Hal.tdb:CU15SI4_D86, tdb:CuSi-19Sol.tdb:CU15SI4_D86, tdb:CuSi-24Kro.tdb:CU15SI4_D86

TDB models of CU15SI4_D86 (3): PHASE and CONSTITUENT statements as written

CuSi-16Hal.tdb: CU15SI4_D86, type code %, sha256 858bf3eb9583bf24…

59: PHASE CU15SI4_D86 % 2 15 4 !
60: CONST CU15SI4_D86 : CU : SI : !

CuSi-19Sol.tdb: CU15SI4_D86, type code %, sha256 f7b1e3d5d7f2e10c…

62: PHASE CU15SI4_D86 % 2 15 4 !
63: CONST CU15SI4_D86 : CU : SI : !

CuSi-24Kro.tdb: CU15SI4_D86, type code %, sha256 649b0d49d2e75ff2…

60: PHASE CU15SI4_D86 % 2 15 4 !
61: CONST CU15SI4_D86 : CU : SI : !

Example references (4 of 4; assessments first):

doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase

CU19SI6 (Cu–Si)

Id: phase:cu-si:cu19si6; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Cu19Si6) · hR* — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Cu19Si6) · R-3m (166) — Hallstedt 2025 mmc2 row for CU19SI6: Cu19Si6 (eta)
Stoichiometry: Cu 0.7600, Si 0.2400
Stability: stable in 5 of 5 calculated diagram(s): 300–1131.85 K, x(Si) 0.24–0.24
Literature: 11 values (11 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:cu-si:cu19si6
paper: paper:10.1016/s0925-8388(00)00983-x:η
tdb: tdb:CuSi-00Yan.tdb:CU19SI6, tdb:CuSi-08Shi.tdb:CU19SI6, tdb:CuSi-98Jac.tdb:CU19SI6, tdb:CuSi-99Fri-LB.tdb:CU19SI6, tdb:CuSi-99Fri-alt.tdb:CU19SI6

TDB models of CU19SI6 (5): PHASE and CONSTITUENT statements as written

CuSi-00Yan.tdb: CU19SI6, type code %, sha256 f728174b3aa223c6…

66: PHASE CU19SI6 % 2 0.76 0.24 !
67: CONST CU19SI6 : CU : SI : !

CuSi-08Shi.tdb: CU19SI6, type code %, sha256 9e7184ce9a8ca0c4…

64: PHASE CU19SI6 % 2 0.76 0.24 !
65: CONST CU19SI6 : CU : SI : !

CuSi-98Jac.tdb: CU19SI6, type code %, sha256 8f97b6dac06196e8…

70: PHASE CU19SI6 % 2 19 6 !
71: CONST CU19SI6 : CU : SI : !

CuSi-99Fri-LB.tdb: CU19SI6, type code %, sha256 1dbb097e2303a64d…

77: PHASE CU19SI6 % 2 19 6 !
78: CONST CU19SI6 : CU : SI : !

CuSi-99Fri-alt.tdb: CU19SI6, type code %, sha256 290a3b7d57ad7f6c…

78: PHASE CU19SI6 % 2 19 6 !
79: CONST CU19SI6 : CU : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(00)00983-X X. Yan, Y.A. Chang, J. Alloys Compd., 308, 221-29(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2008.05.003 D. Shin, J.E. Saal, Z.-K. Liu, Calphad, 32, 520-26(2008).
assessment that models this phase

CU33SI7_HT (Cu–Si)

Id: phase:cu-si:cu33si7; status needs_review
No structure assigned. Why: no_structure_token; off_stoichiometric_model; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (Cu33Si7) — Hallstedt 2025 mmc2 row for CU33SI7_HT: Cu33Si7 (delta)
Stability: stable in 7 of 7 calculated diagram(s): 955.61–1097.06 K, x(Si) 0.17148–0.17904
Literature: 18 values (18 accepted) from 1 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:cu-si:cu33si7
paper: paper:10.1016/s0925-8388(00)00983-x:δ
tdb: tdb:CuSi-00Yan.tdb:CU33SI7, tdb:CuSi-08Shi.tdb:CU33SI7, tdb:CuSi-13Gie.tdb:CU33SI7_HT, tdb:CuSi-16Hal.tdb:CU33SI7_HT, tdb:CuSi-19Sol.tdb:CU33SI7_HT, tdb:CuSi-24Kro.tdb:CU33SI7_HT, tdb:CuSi-98Jac.tdb:CU33SI7

TDB models of CU33SI7_HT (7): PHASE and CONSTITUENT statements as written

CuSi-00Yan.tdb: CU33SI7, type code %, sha256 f728174b3aa223c6…

55: PHASE CU33SI7 % 2 0.825 0.175 !
56: CONST CU33SI7 : CU : SI : !

CuSi-08Shi.tdb: CU33SI7, type code %, sha256 9e7184ce9a8ca0c4…

53: PHASE CU33SI7 % 2 0.825 0.175 !
54: CONST CU33SI7 : CU : SI : !

CuSi-13Gie.tdb: CU33SI7_HT, type code %, sha256 5471b8fafdfddb9a…

57: PHASE CU33SI7_HT % 2 33 7 !
58: CONST CU33SI7_HT : CU : SI : !

CuSi-16Hal.tdb: CU33SI7_HT, type code %, sha256 858bf3eb9583bf24…

54: PHASE CU33SI7_HT % 2 33 7 !
55: CONST CU33SI7_HT : CU : SI : !

CuSi-19Sol.tdb: CU33SI7_HT, type code %, sha256 f7b1e3d5d7f2e10c…

57: PHASE CU33SI7_HT % 2 33 7 !
58: CONST CU33SI7_HT : CU : SI : !

CuSi-24Kro.tdb: CU33SI7_HT, type code %, sha256 649b0d49d2e75ff2…

55: PHASE CU33SI7_HT % 2 0.825 0.175 !
56: CONST CU33SI7_HT : CU% SI : CU SI% : !

CuSi-98Jac.tdb: CU33SI7, type code %, sha256 8f97b6dac06196e8…

59: PHASE CU33SI7 % 2 33 7 !
60: CONST CU33SI7 : CU : SI : !

Example references (6 of 6; assessments first):

doi:10.1016/S0925-8388(00)00983-X X. Yan, Y.A. Chang, J. Alloys Compd., 308, 221-29(2000).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase
doi:10.1016/j.calphad.2008.05.003 D. Shin, J.E. Saal, Z.-K. Liu, Calphad, 32, 520-26(2008).
assessment that models this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase

CU33SI7_A13 (Cu–Si)

Id: phase:cu-si:cu33si7-a13; status assigned
Structure: beta-Mn · A13 · cP20 · P4_132 (213); type st:a13-beta-mn-cp20; tier A: standard phase name; confidence high
Stability: stable in 6 of 6 calculated diagram(s): 300–1007.32 K, x(Si) 0.17191–0.17545
Literature: 22 values (22 accepted) from 2 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:cu-si:cu33si7-a13
paper: paper:10.1007/s11669-024-01160-5:γ, paper:10.1016/j.jct.2012.07.025:γ
tdb: tdb:CuSi-13Gie.tdb:CU33SI7_A13, tdb:CuSi-16Hal.tdb:CU33SI7_A13, tdb:CuSi-19Sol.tdb:CU33SI7_A13, tdb:CuSi-24Kro.tdb:CU33SI7_A13, tdb:CuSi-99Fri-LB.tdb:CU33SI7_A13, tdb:CuSi-99Fri-alt.tdb:CU33SI7_A13

TDB models of CU33SI7_A13 (6): PHASE and CONSTITUENT statements as written

CuSi-13Gie.tdb: CU33SI7_A13, type code %, sha256 5471b8fafdfddb9a…

52: PHASE CU33SI7_A13 % 2 33 7 !
53: CONST CU33SI7_A13 : CU : SI : !

CuSi-16Hal.tdb: CU33SI7_A13, type code %, sha256 858bf3eb9583bf24…

49: PHASE CU33SI7_A13 % 2 33 7 !
50: CONST CU33SI7_A13 : CU : SI : !

CuSi-19Sol.tdb: CU33SI7_A13, type code %, sha256 f7b1e3d5d7f2e10c…

52: PHASE CU33SI7_A13 % 2 33 7 !
53: CONST CU33SI7_A13 : CU : SI : !

CuSi-24Kro.tdb: CU33SI7_A13, type code %, sha256 649b0d49d2e75ff2…

50: PHASE CU33SI7_A13 % 2 0.825 0.175 !
51: CONST CU33SI7_A13 : CU% SI : CU SI% : !

CuSi-99Fri-LB.tdb: CU33SI7_A13, type code %, sha256 1dbb097e2303a64d…

61: PHASE CU33SI7_A13 % 2 33 7 !
62: CONST CU33SI7_A13 : CU : SI : !

CuSi-99Fri-alt.tdb: CU33SI7_A13, type code %, sha256 290a3b7d57ad7f6c…

62: PHASE CU33SI7_A13 % 2 33 7 !
63: CONST CU33SI7_A13 : CU : SI : !

Example references (5 of 5; assessments first):

doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase

CU33SI7-HT (Cu–Si)

Id: phase:cu-si:cu33si7-ht; status needs_review
No structure assigned. Why: no_bundled_tdb_model; no_structure_token
Candidate (literature_printed): (Cu33Si7) · tP* — printed with a label mapped to this phase
Stability: no calculated diagram
Literature: 47 values (47 accepted) from 2 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:cu-si:cu33si7-ht
paper: paper:10.1007/s11669-024-01160-5:δ, paper:10.1016/j.jct.2012.07.025:δ

Example references (4 of 4; assessments first):

doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
reports values for this phase
doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
reports values for this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
cited as the source of values for this phase

CU3SI_HT (Cu–Si)

Id: phase:cu-si:cu3si-ht; status needs_review
No structure assigned. Why: no_structure_token; off_stoichiometric_model; sgte_mmc2_row_incomplete
Candidate (literature_printed): Cu3Si-h2 · hR* — printed with a label mapped to this phase
Candidate (sgte_mmc2): Cu3Si-h2 · P-31m (162) — Hallstedt 2025 mmc2 row for CU3SI_HT: Cu3Si (eta, high T, incommensurately modulated)
Stability: stable in 4 of 4 calculated diagram(s): 827.94–1132.37 K, x(Si) 0.23719–0.24976
Literature: 36 values (36 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:cu-si:cu3si-ht
paper: paper:10.1007/s11669-024-01160-5:η, paper:10.1007/s11669-024-01160-5:η_Cu3Si, paper:10.1016/j.jct.2012.07.025:η
tdb: tdb:CuSi-13Gie.tdb:CU3SI_HT, tdb:CuSi-16Hal.tdb:CU3SI_HT, tdb:CuSi-19Sol.tdb:CU3SI_HT, tdb:CuSi-24Kro.tdb:CU3SI_HT

TDB models of CU3SI_HT (4): PHASE and CONSTITUENT statements as written

CuSi-13Gie.tdb: CU3SI_HT, type code %, sha256 5471b8fafdfddb9a…

76: PHASE CU3SI_HT % 2 0.76 0.24 !
77: CONST CU3SI_HT : CU : SI : !

CuSi-16Hal.tdb: CU3SI_HT, type code %, sha256 858bf3eb9583bf24…

74: PHASE CU3SI_HT % 2 0.76 0.24 !
75: CONST CU3SI_HT : CU : SI : !

CuSi-19Sol.tdb: CU3SI_HT, type code %, sha256 f7b1e3d5d7f2e10c…

77: PHASE CU3SI_HT % 2 0.76 0.24 !
78: CONST CU3SI_HT : CU : SI : !

CuSi-24Kro.tdb: CU3SI_HT, type code %, sha256 649b0d49d2e75ff2…

75: PHASE CU3SI_HT % 2 0.76 0.24 !
76: CONST CU3SI_HT : CU% SI : CU SI% : !

Example references (5 of 5; assessments first):

doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase

CU3SI_LT (Cu–Si)

Id: phase:cu-si:cu3si-lt; status needs_review
No structure assigned. Why: assessment_declared_compound_differs_from_model_composition; no_structure_token; off_stoichiometric_model
Candidate (literature_printed): Cu3Si-r · hR10140 — printed with a label mapped to this phase
Candidate (sgte_mmc2): Cu3Si-r · hR10140 · P-3 (147) — Hallstedt 2025 mmc2 row for CU3SI_LT: Cu3Si (eta-doubleprime, low T, incommensurately modulated)
Stability: stable in 4 of 4 calculated diagram(s): 300–842 K, x(Si) 0.23–0.2436
Literature: 4 values (4 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:cu-si:cu3si-lt
paper: paper:10.1007/s11669-024-01160-5:η″, paper:10.1016/j.jct.2012.07.025:η″
tdb: tdb:CuSi-13Gie.tdb:CU3SI_LT, tdb:CuSi-16Hal.tdb:CU3SI_LT, tdb:CuSi-19Sol.tdb:CU3SI_LT, tdb:CuSi-24Kro.tdb:CU3SI_LT

TDB models of CU3SI_LT (4): PHASE and CONSTITUENT statements as written

CuSi-13Gie.tdb: CU3SI_LT, type code %, sha256 5471b8fafdfddb9a…

70: PHASE CU3SI_LT % 2 0.77 0.23 !
71: CONST CU3SI_LT : CU : SI : !

CuSi-16Hal.tdb: CU3SI_LT, type code %, sha256 858bf3eb9583bf24…

64: PHASE CU3SI_LT % 2 0.77 0.23 !
65: CONST CU3SI_LT : CU : SI : !

CuSi-19Sol.tdb: CU3SI_LT, type code %, sha256 f7b1e3d5d7f2e10c…

67: PHASE CU3SI_LT % 2 0.77 0.23 !
68: CONST CU3SI_LT : CU : SI : !

CuSi-24Kro.tdb: CU3SI_LT, type code %, sha256 649b0d49d2e75ff2…

65: PHASE CU3SI_LT % 2 0.76 0.24 !
66: CONST CU3SI_LT : CU% SI : CU SI% : !

Example references (6 of 6; assessments first):

doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase
doi:10.1016/s1359-6454(01)00187-2 G. Ghosh, Dissolution and interfacial reactions of thin-film Ti/Ni/Ag metallizations in solder joints, Acta Materialia 49, 2609-2624 (2001).
cited as the source of values for this phase

CU3SI_MT (Cu–Si)

Id: phase:cu-si:cu3si-mt; status needs_review
No structure assigned. Why: assessment_declared_compound_differs_from_model_composition; name_has_descriptive_tokens:MT; no_structure_token
Candidate (literature_printed): Cu3Si-h1 · hR552 — printed with a label mapped to this phase
Candidate (sgte_mmc2): Cu3Si-h1 · hR552 · P-31c (163) — Hallstedt 2025 mmc2 row for CU3SI_MT: Cu3Si (eta-prime, intermediate T, incommensurately modulated)
Candidate (tdb_comment): Cu3Si (it) · hR9 · R-3 — CuSi-16Hal.tdb: 'Prototype Cu3Si (it) (hR9, R-3), eta-prime'
Candidate (tdb_comment): Cu3Si (it) · hR9 · R-3 — CuSi-19Sol.tdb: 'Prototype Cu3Si (it) (hR9, R-3), eta-prime'
Candidate (tdb_comment): Cu3Si (it) · hR9 · R-3 — CuSi-24Kro.tdb: 'Prototype Cu3Si (it) (hR9, R-3), eta-prime'
Stability: stable in 4 of 4 calculated diagram(s): 740–893.46 K, x(Si) 0.235–0.2451
Literature: 15 values (15 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:cu-si:cu3si-mt
paper: paper:10.1007/s11669-024-01160-5:η′, paper:10.1016/j.jct.2012.07.025:η′
tdb: tdb:CuSi-13Gie.tdb:CU3SI_MT, tdb:CuSi-16Hal.tdb:CU3SI_MT, tdb:CuSi-19Sol.tdb:CU3SI_MT, tdb:CuSi-24Kro.tdb:CU3SI_MT

TDB models of CU3SI_MT (4): PHASE and CONSTITUENT statements as written

CuSi-13Gie.tdb: CU3SI_MT, type code %, sha256 5471b8fafdfddb9a…

73: PHASE CU3SI_MT % 2 0.765 0.235 !
74: CONST CU3SI_MT : CU : SI : !

CuSi-16Hal.tdb: CU3SI_MT, type code %, sha256 858bf3eb9583bf24…

69: PHASE CU3SI_MT % 2 0.765 0.235 !
70: CONST CU3SI_MT : CU : SI : !

CuSi-19Sol.tdb: CU3SI_MT, type code %, sha256 f7b1e3d5d7f2e10c…

72: PHASE CU3SI_MT % 2 0.765 0.235 !
73: CONST CU3SI_MT : CU : SI : !

CuSi-24Kro.tdb: CU3SI_MT, type code %, sha256 649b0d49d2e75ff2…

70: PHASE CU3SI_MT % 2 0.76 0.24 !
71: CONST CU3SI_MT : CU% SI : CU SI% : !

Example references (6 of 6; assessments first):

doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase
doi:10.1016/s1359-6454(01)00187-2 G. Ghosh, Dissolution and interfacial reactions of thin-film Ti/Ni/Ag metallizations in solder joints, Acta Materialia 49, 2609-2624 (2001).
cited as the source of values for this phase

CU4SI (Cu–Si)

Id: phase:cu-si:cu4si; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
Candidate (tdb_comment): Cu15Si4 · cI76 · I-43d — CuSi-98Jac.tdb: 'Prototype Cu15Si4 (cI76, I-43d), epsilon'
Stoichiometry: Cu 0.8000, Si 0.2000
Stability: stable in 1 of 1 calculated diagram(s): 696.51–1077.95 K, x(Si) 0.2–0.2
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:cu-si:cu4si
tdb: tdb:CuSi-98Jac.tdb:CU4SI

TDB models of CU4SI (1): PHASE and CONSTITUENT statements as written

CuSi-98Jac.tdb: CU4SI, type code %, sha256 8f97b6dac06196e8…

64: PHASE CU4SI % 2 4 1 !
65: CONST CU4SI : CU : SI : !

CU56SI11_A13 (Cu–Si)

Id: phase:cu-si:cu56si11-a13; status needs_review
No structure assigned. Why: assessment_declared_blocked_by:models_disagree_on_composition; models_disagree_on_composition
Candidate (literature_printed): beta-Mn · cP20 — printed with a label mapped to this phase
Candidate (name_token): beta-Mn · A13 · cP20 · P4_132 (213) — Strukturbericht/word 'A13' in the TDB name
Candidate (sgte_mmc2): beta-Mn · A13 · cP20 · P4_132 (213) — Hallstedt 2025 mmc2 row for CU56SI11_A13: Cu56Si11 (gamma)
Candidate (tdb_comment): beta-Mn · cP20 · P4_132 — CuSi-00Yan.tdb: 'Prototype beta-Mn (cP20, P4_132), gamma'
Candidate (tdb_comment): beta-Mn · cP20 · P4_132 — CuSi-08Shi.tdb: 'Prototype beta-Mn (cP20, P4_132), gamma'
Candidate (tdb_comment): beta-Mn · cP20 · P4_132 — CuSi-98Jac.tdb: 'Prototype beta-Mn (cP20, P4_132), gamma'
Stability: stable in 3 of 3 calculated diagram(s): 300–1008.37 K, x(Si) 0.16418–0.1642
Literature: 9 values (9 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:cu-si:cu56si11-a13
paper: paper:10.1016/s0925-8388(00)00983-x:γ
tdb: tdb:CuSi-00Yan.tdb:CU56SI11_A13, tdb:CuSi-08Shi.tdb:CU56SI11_A13, tdb:CuSi-98Jac.tdb:CU56SI11_A13

TDB models of CU56SI11_A13 (3): PHASE and CONSTITUENT statements as written

CuSi-00Yan.tdb: CU56SI11_A13, type code %, sha256 f728174b3aa223c6…

50: PHASE CU56SI11_A13 % 2 0.8358 0.1642 !
51: CONST CU56SI11_A13 : CU : SI : !

CuSi-08Shi.tdb: CU56SI11_A13, type code %, sha256 9e7184ce9a8ca0c4…

48: PHASE CU56SI11_A13 % 2 0.8358 0.1642 !
49: CONST CU56SI11_A13 : CU : SI : !

CuSi-98Jac.tdb: CU56SI11_A13, type code %, sha256 8f97b6dac06196e8…

54: PHASE CU56SI11_A13 % 2 56 11 !
55: CONST CU56SI11_A13 : CU : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(00)00983-X X. Yan, Y.A. Chang, J. Alloys Compd., 308, 221-29(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2008.05.003 D. Shin, J.E. Saal, Z.-K. Liu, Calphad, 32, 520-26(2008).
assessment that models this phase

CU9SI2 (Cu–Si)

Id: phase:cu-si:cu9si2; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (Cu9Si2) — Hallstedt 2025 mmc2 row for CU9SI2: Cu9Si2 (delta)
Stoichiometry: Cu 0.8182, Si 0.1818
Stability: stable in 2 of 2 calculated diagram(s): 981.56–1097.01 K, x(Si) 0.18182–0.18182
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:cu-si:cu9si2
tdb: tdb:CuSi-99Fri-LB.tdb:CU9SI2, tdb:CuSi-99Fri-alt.tdb:CU9SI2

TDB models of CU9SI2 (2): PHASE and CONSTITUENT statements as written

CuSi-99Fri-LB.tdb: CU9SI2, type code %, sha256 1dbb097e2303a64d…

66: PHASE CU9SI2 % 2 9 2 !
67: CONST CU9SI2 : CU : SI : !

CuSi-99Fri-alt.tdb: CU9SI2, type code %, sha256 290a3b7d57ad7f6c…

67: PHASE CU9SI2 % 2 9 2 !
68: CONST CU9SI2 : CU : SI : !

FCC_A1 (Cu–Si)

Id: phase:cu-si:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: stable in 9 of 9 calculated diagram(s): 300–1360.77 K, x(Si) 0–0.11612
Literature: 33 values (33 accepted) from 3 papers
Interactive: phase registry entry

Names (13): corpus: corpus:phase:cu-si:fcc-a1
paper: paper:10.1007/s11669-024-01160-5:(Cu), paper:10.1016/j.jct.2012.07.025:FCC_A1(Cu), paper:10.1016/s0925-8388(00)00983-x:(Cu)
tdb: tdb:CuSi-00Yan.tdb:FCC_A1, tdb:CuSi-08Shi.tdb:FCC_A1, tdb:CuSi-13Gie.tdb:FCC_A1, tdb:CuSi-16Hal.tdb:FCC_A1, tdb:CuSi-19Sol.tdb:FCC_A1, tdb:CuSi-24Kro.tdb:FCC_A1, tdb:CuSi-98Jac.tdb:FCC_A1, tdb:CuSi-99Fri-LB.tdb:FCC_A1, tdb:CuSi-99Fri-alt.tdb:FCC_A1

TDB models of FCC_A1 (9): PHASE and CONSTITUENT statements as written

CuSi-00Yan.tdb: FCC_A1, type code %A, sha256 f728174b3aa223c6…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : CU% SI : VA : !

CuSi-08Shi.tdb: FCC_A1, type code %A, sha256 9e7184ce9a8ca0c4…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : CU% SI : VA : !

CuSi-13Gie.tdb: FCC_A1, type code %A, sha256 5471b8fafdfddb9a…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : CU% SI : VA : !

CuSi-16Hal.tdb: FCC_A1, type code %A, sha256 858bf3eb9583bf24…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : CU% SI : VA : !

CuSi-19Sol.tdb: FCC_A1, type code %A, sha256 f7b1e3d5d7f2e10c…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : CU% SI : VA : !

CuSi-24Kro.tdb: FCC_A1, type code %A, sha256 649b0d49d2e75ff2…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : CU% SI : VA : !

CuSi-98Jac.tdb: FCC_A1, type code %A, sha256 8f97b6dac06196e8…

34: PHASE FCC_A1 %A 2 1 1 !
35: CONST FCC_A1 : CU% SI : VA : !

CuSi-99Fri-LB.tdb: FCC_A1, type code %A, sha256 1dbb097e2303a64d…

41: PHASE FCC_A1 %A 2 1 1 !
42: CONST FCC_A1 : CU% SI : VA : !

CuSi-99Fri-alt.tdb: FCC_A1, type code %A, sha256 290a3b7d57ad7f6c…

42: PHASE FCC_A1 %A 2 1 1 !
43: CONST FCC_A1 : CU% SI : VA : !

Example references (7 of 7; assessments first):

doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(00)00983-X X. Yan, Y.A. Chang, J. Alloys Compd., 308, 221-29(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.calphad.2008.05.003 D. Shin, J.E. Saal, Z.-K. Liu, Calphad, 32, 520-26(2008).
assessment that models this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase

HCP_A3 (Cu–Si)

Id: phase:cu-si: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 9 of 9 calculated diagram(s): 822.83–1115.92 K, x(Si) 0.10482–0.14356
Literature: 43 values (43 accepted) from 3 papers
Interactive: phase registry entry

Names (15): corpus: corpus:phase:cu-si:hcp-a3
paper: paper:10.1007/s11669-024-01160-5:κ, paper:10.1007/s11669-024-01160-5:κ(CuSi), paper:10.1016/j.jct.2012.07.025:κ, paper:10.1016/s0925-8388(00)00983-x:κ
system_alias: system_alias:cu-si:kappa
tdb: tdb:CuSi-00Yan.tdb:HCP_A3, tdb:CuSi-08Shi.tdb:HCP_A3, tdb:CuSi-13Gie.tdb:HCP_A3, tdb:CuSi-16Hal.tdb:HCP_A3, tdb:CuSi-19Sol.tdb:HCP_A3, tdb:CuSi-24Kro.tdb:HCP_A3, tdb:CuSi-98Jac.tdb:HCP_A3, tdb:CuSi-99Fri-LB.tdb:HCP_A3, tdb:CuSi-99Fri-alt.tdb:HCP_A3

TDB models of HCP_A3 (9): PHASE and CONSTITUENT statements as written

CuSi-00Yan.tdb: HCP_A3, type code %A, sha256 f728174b3aa223c6…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : CU SI : VA : !

CuSi-08Shi.tdb: HCP_A3, type code %A, sha256 9e7184ce9a8ca0c4…

38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : CU SI : VA : !

CuSi-13Gie.tdb: HCP_A3, type code %A, sha256 5471b8fafdfddb9a…

42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : CU SI : VA : !

CuSi-16Hal.tdb: HCP_A3, type code %A, sha256 858bf3eb9583bf24…

39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : CU SI : VA : !

CuSi-19Sol.tdb: HCP_A3, type code %A, sha256 f7b1e3d5d7f2e10c…

42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : CU SI : VA : !

CuSi-24Kro.tdb: HCP_A3, type code %A, sha256 649b0d49d2e75ff2…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : CU SI : VA : !

CuSi-98Jac.tdb: HCP_A3, type code %A, sha256 8f97b6dac06196e8…

44: PHASE HCP_A3 %A 2 1 0.5 !
45: CONST HCP_A3 : CU SI : VA : !

CuSi-99Fri-LB.tdb: HCP_A3, type code %A, sha256 1dbb097e2303a64d…

51: PHASE HCP_A3 %A 2 1 0.5 !
52: CONST HCP_A3 : CU SI : VA : !

CuSi-99Fri-alt.tdb: HCP_A3, type code %A, sha256 290a3b7d57ad7f6c…

52: PHASE HCP_A3 %A 2 1 0.5 !
53: CONST HCP_A3 : CU SI : VA : !

Example references (7 of 7; assessments first):

doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(00)00983-X X. Yan, Y.A. Chang, J. Alloys Compd., 308, 221-29(2000).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.calphad.2008.05.003 D. Shin, J.E. Saal, Z.-K. Liu, Calphad, 32, 520-26(2008).
assessment that models this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
cited as the source of values for this phase

LIQUID (Cu–Si)

Id: phase:cu-si:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 9 of 9 calculated diagram(s): 1073.66–2500 K, x(Si) 0–1
Literature: 48 values (48 accepted) from 3 papers
Interactive: phase registry entry

Names (13): corpus: corpus:phase:cu-si:liquid
paper: paper:10.1007/s11669-024-01160-5:L, paper:10.1016/j.jct.2012.07.025:L, paper:10.1016/s0925-8388(00)00983-x:L
tdb: tdb:CuSi-00Yan.tdb:LIQUID, tdb:CuSi-08Shi.tdb:LIQUID, tdb:CuSi-13Gie.tdb:LIQUID, tdb:CuSi-16Hal.tdb:LIQUID, tdb:CuSi-19Sol.tdb:LIQUID, tdb:CuSi-24Kro.tdb:LIQUID, tdb:CuSi-98Jac.tdb:LIQUID, tdb:CuSi-99Fri-LB.tdb:LIQUID, tdb:CuSi-99Fri-alt.tdb:LIQUID

TDB models of LIQUID (9): PHASE and CONSTITUENT statements as written

CuSi-00Yan.tdb: LIQUID, type code %, sha256 f728174b3aa223c6…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : CU SI : !

CuSi-08Shi.tdb: LIQUID, type code %, sha256 9e7184ce9a8ca0c4…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : CU SI : !

CuSi-13Gie.tdb: LIQUID, type code %, sha256 5471b8fafdfddb9a…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : CU CU3SI SI : !

CuSi-16Hal.tdb: LIQUID, type code %, sha256 858bf3eb9583bf24…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : CU SI : !

CuSi-19Sol.tdb: LIQUID, type code %, sha256 f7b1e3d5d7f2e10c…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : CU SI : !

CuSi-24Kro.tdb: LIQUID, type code %, sha256 649b0d49d2e75ff2…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : CU SI : !

CuSi-98Jac.tdb: LIQUID, type code %, sha256 8f97b6dac06196e8…

29: PHASE LIQUID:L % 1 1 !
30: CONST LIQUID:L : CU SI : !

CuSi-99Fri-LB.tdb: LIQUID, type code %, sha256 1dbb097e2303a64d…

36: PHASE LIQUID:L % 1 1 !
37: CONST LIQUID:L : CU SI : !

CuSi-99Fri-alt.tdb: LIQUID, type code %, sha256 290a3b7d57ad7f6c…

37: PHASE LIQUID:L % 1 1 !
38: CONST LIQUID:L : CU SI : !

Example references (7 of 7; assessments first):

doi:10.1016/j.jct.2012.07.025 Wojciech Gierlotka, Md. Azizul Haque, On the binary (Cu + Si) system: Thermodynamic modelling of the phase diagram and atomic mobility in face centred cubic phase, The Journal of Chemical Thermodynamics 57, 32-38 (2013).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-024-01160-5 Ales Kroupa, Ondrej Zobac, Adela Zemanova, Klaus W. Richter, CALPHAD-Type Reassessment of Cu-Si and Full Assessment of the Al-Cu-Si Systems, J. Phase Equilib. Diffus. 45, 1206-1243 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(00)00983-X X. Yan, Y.A. Chang, J. Alloys Compd., 308, 221-29(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2016.03.002 Bengt Hallstedt, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Calorimetric measurements and assessment of the binary Cu–Si and ternary Al–Cu–Si phase diagrams, Calphad 53, 25-38 (2016).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.calphad.2008.05.003 D. Shin, J.E. Saal, Z.-K. Liu, Calphad, 32, 520-26(2008).
assessment that models this phase
doi:10.1016/j.jallcom.2019.06.236 Luca Soldi, Annabelle Laplace, Mathieu Roskosz, Stéphane Gossé, Phase diagram and thermodynamic model for the Cu-Si and the Cu-Fe-Si systems, Journal of Alloys and Compounds 803, 61-70 (2019).
assessment that models this phase
doi:10.1016/j.intermet.2011.05.017 Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani, Experimental investigation of the Cu–Si phase diagram at x(Cu)>0.72, Intermetallics 19, 1479-1488 (2011).
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}
}