Co–Zr phases

13 phases (tier A 9, tier C 1, liquid 1, needs_review 2); 13 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 · Co–Zr system page · Markdown · field reference

Phases of the Co–Zr system (13)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:co-zr:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 1100–3999.37 K, x(Zr) 0.898–1	47	11
B2_BCC phase:co-zr:bcc-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–3999.1 K, x(Zr) 0.49883–1	31	4
C15_LAVES phase:co-zr:c15-laves	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 6 of 6 calculated diagram(s): 300–1853.32 K, x(Zr) 0.2525–0.34111	71	6
CO11ZR2 phase:co-zr:co11zr2		needs_review	stable in 6 of 6 calculated diagram(s): 300–1548.49 K, x(Zr) 0.15385–0.15385	51	6
CO23ZR6_D8A phase:co-zr:co23zr6-d8a	Mn23Th6 · D8_a · cF116 · Fm-3m (225)	tier A: standard phase name	stable in 6 of 6 calculated diagram(s): 300–1628.06 K, x(Zr) 0.2069–0.2069	51	6
CO2ZR_C15 phase:co-zr:co2zr-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2073.51 K, x(Zr) 0.33333–0.33333	0	1
COZR_B2 phase:co-zr:cozr-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1821.89 K, x(Zr) 0.5–0.5	48	3
COZR2 phase:co-zr:cozr2		needs_review	stable in 1 of 1 calculated diagram(s): 300–1582.37 K, x(Zr) 0.66667–0.66667	3	1
COZR2_C16 phase:co-zr:cozr2-c16	Al2Cu · C16 · tI12 · I4/mcm (140)	tier A: standard phase name	stable in 6 of 6 calculated diagram(s): 300–1398.53 K, x(Zr) 0.66667–0.66845	80	6
COZR3 phase:co-zr:cozr3	Re3B · E1_a · oC16 · Cmcm (63)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 6 of 6 calculated diagram(s): 300–1254.33 K, x(Zr) 0.7468–0.75592	28	6
FCC_A1 phase:co-zr:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 619.99–1794.78 K, x(Zr) 0–0.01229	14	7
HCP_A3 phase:co-zr:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 300–2060.04 K, x(Zr) 0–1	12	7
LIQUID phase:co-zr:liquid	liquid	liquid	stable in 7 of 7 calculated diagram(s): 1256.32–4000 K, x(Zr) 0–1	165	7

BCC_A2 (Co–Zr)

Id: phase:co-zr: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 7 of 7 calculated diagram(s): 1100–3999.37 K, x(Zr) 0.898–1
Literature: 47 values (47 accepted) from 4 papers
Interactive: phase registry entry

Names (17): corpus: corpus:phase:co-zr:bcc-a2
paper: paper:10.1007/s11669-020-00805-5:(βCo), paper:10.1007/s11669-020-00805-5:(βZr), paper:10.1007/s11669-020-00859-5:bcc(Zr), paper:10.1016/j.calphad.2010.02.006:BCC_A2, paper:10.1016/j.jallcom.2009.04.032:(βZr)
tdb: tdb:CoZr-06Bra.tdb:BCC_A2, tdb:CoZr-09Liu.tdb:BCC_A2, tdb:CoZr-10Dur.tdb:A2_BCC, tdb:CoZr-10Dur.tdb:BCC_A2, tdb:CoZr-20Agr.tdb:BCC_A2, tdb:CoZr-21Zho.tdb:A2_BCC, tdb:CoZr-21Zho.tdb:BCC_A2, tdb:CoZr-22Zho.tdb:A2_BCC, tdb:CoZr-22Zho.tdb:BCC_A2, tdb:CoZr-23Sun.tdb:A2_BCC, tdb:CoZr-23Sun.tdb:BCC_A2

TDB models of BCC_A2 (11): PHASE and CONSTITUENT statements as written

CoZr-06Bra.tdb: BCC_A2, type code %B, sha256 4cf053b4e5984583…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : CO ZR% : VA : !

CoZr-09Liu.tdb: BCC_A2, type code %B, sha256 21ca509095023d19…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : CO ZR% : VA : !

CoZr-10Dur.tdb: A2_BCC, type code %B, sha256 2b9f7fe2872d5ff7…

37: PHASE A2_BCC %B 2 1 3 !
38: CONST A2_BCC : CO VA ZR : VA : !

CoZr-10Dur.tdb: BCC_A2, type code %B, sha256 2b9f7fe2872d5ff7…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : CO ZR% : VA : !

CoZr-20Agr.tdb: BCC_A2, type code %B, sha256 d571ff30c7e48944…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : CO ZR% : VA : !

CoZr-21Zho.tdb: A2_BCC, type code %B, sha256 52e8b692e30b9251…

38: PHASE A2_BCC %B 2 1 3 !
39: CONST A2_BCC : CO ZR : VA : !

CoZr-21Zho.tdb: BCC_A2, type code %B, sha256 52e8b692e30b9251…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : CO ZR% : VA : !

CoZr-22Zho.tdb: A2_BCC, type code %B, sha256 80f4492cf632b86b…

39: PHASE A2_BCC %B 2 1 3 !
40: CONST A2_BCC : CO ZR : VA : !

CoZr-22Zho.tdb: BCC_A2, type code %B, sha256 80f4492cf632b86b…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : CO ZR% : VA : !

CoZr-23Sun.tdb: A2_BCC, type code %B, sha256 33d7504af3254f23…

39: PHASE A2_BCC %B 2 1 3 !
40: CONST A2_BCC : CO VA ZR : VA : !

CoZr-23Sun.tdb: BCC_A2, type code %B, sha256 33d7504af3254f23…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : CO ZR% : VA : !

Example references (8 of 8; assessments first):

doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00859-5 Chenyang Zhou, Hang Wang, Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems, J. Phase Equilib. Diffus. 42, 77-90 (2021).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11661-023-07089-7 Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental Investigation and Thermodynamic Description of the Co–Nb–Zr System, Metall Mater Trans A 54, 3021-3044 (2023).
assessment that models this phase
doi:10.1016/j.jnoncrysol.2022.121615 Chenyang Zhou, Haipeng Jin, Huakou Yang, Jinming Liu, Hang Wang, Bin Yang, Phase diagram, thermodynamic modeling and predictions of glass-forming range and ability in the Co–Cu–Zr system, Journal of Non-Crystalline Solids 588, 121615 (2022).
assessment that models this phase
doi:10.1361/154770306X109746 J. Bratberg, B. Jansson, J. Phase Equilib. Diffus., 27, 213-19(2006).
assessment that models this phase
doi:10.1007/s11106-016-9751-x O. L. Semenova, V. M. Petyukh, O. S. Fomichev, The Constitution of Co–Zr Phase Diagram, Powder Metall Met Ceram 54, 583-589 (2016).
cited as the source of values for this phase

B2_BCC (Co–Zr)

Id: phase:co-zr:bcc-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Caveat: CoZr-10Dur.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: CoZr-21Zho.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: CoZr-22Zho.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: CoZr-23Sun.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: partitioned order/disorder model in CoZr-10Dur.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CoZr-21Zho.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CoZr-22Zho.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CoZr-23Sun.tdb also describes the disordered state
Stability: stable in 4 of 4 calculated diagram(s): 300–3999.1 K, x(Zr) 0.49883–1
Literature: 31 values (31 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:co-zr:bcc-b2, corpus:phase:co-zr:b2-bcc
paper: paper:10.1007/s11669-020-00859-5:CoZr, paper:10.1016/j.calphad.2010.02.006:BCC_B2
tdb: tdb:CoZr-10Dur.tdb:B2_BCC, tdb:CoZr-21Zho.tdb:B2_BCC, tdb:CoZr-22Zho.tdb:B2_BCC, tdb:CoZr-23Sun.tdb:B2_BCC

TDB models of B2_BCC (4): PHASE and CONSTITUENT statements as written

CoZr-10Dur.tdb: B2_BCC, type code %BO, sha256 2b9f7fe2872d5ff7…

42: PHASE B2_BCC %BO 3 0.5 0.5 3 !
43: CONST B2_BCC : CO% VA ZR : CO VA ZR% : VA : !

CoZr-21Zho.tdb: B2_BCC, type code %BO, sha256 52e8b692e30b9251…

43: PHASE B2_BCC %BO 3 0.5 0.5 3 !
44: CONST B2_BCC : CO% ZR : CO ZR% : VA : !

CoZr-22Zho.tdb: B2_BCC, type code %BO, sha256 80f4492cf632b86b…

44: PHASE B2_BCC %BO 3 0.5 0.5 3 !
45: CONST B2_BCC : CO% ZR : CO ZR% : VA : !

CoZr-23Sun.tdb: B2_BCC, type code %BO, sha256 33d7504af3254f23…

44: PHASE B2_BCC %BO 3 0.5 0.5 3 !
45: CONST B2_BCC : CO% VA ZR : CO VA ZR% : VA : !

Example references (9 of 9; assessments first):

doi:10.1007/s11669-020-00859-5 Chenyang Zhou, Hang Wang, Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems, J. Phase Equilib. Diffus. 42, 77-90 (2021).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
assessment that models this phase; reports values for this phase
doi:10.1007/s11661-023-07089-7 Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental Investigation and Thermodynamic Description of the Co–Nb–Zr System, Metall Mater Trans A 54, 3021-3044 (2023).
assessment that models this phase
doi:10.1016/j.jnoncrysol.2022.121615 Chenyang Zhou, Haipeng Jin, Huakou Yang, Jinming Liu, Hang Wang, Bin Yang, Phase diagram, thermodynamic modeling and predictions of glass-forming range and ability in the Co–Cu–Zr system, Journal of Non-Crystalline Solids 588, 121615 (2022).
assessment that models this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
cited as the source of values for this phase
doi:10.1016/0364-5916(83)90024-x J.C. Gachon, Enthalpies of formation of binary phases in the systems FeTi, FeZr, CoTi, CoZr, NiTi, and NiZr, by direct reaction calorimetry, Calphad (1983).
cited as the source of values for this phase
doi:10.1016/s0925-8388(98)00246-1 Qiti Guo, O.J. Kleppa, Standard enthalpies of formation of some alloys formed between group IV elements and group VIII elements, determined by high-temperature direct synthesis calorimetry, Journal of Alloys and Compounds 269, 181-186 (1998).
cited as the source of values for this phase
doi:10.1103/physrevb.78.144414 P. R. Ohodnicki, N. C. Cates, D. E. Laughlin, M. E. McHenry, M. Widom, Ab initiotheoretical study of magnetization and phase stability of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>Fe</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Co</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Ni</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mtext>B</mml:mtext><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>Fe</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Co</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Ni</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Zr</mml:mtext></mml:mrow><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>structures of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Cr</mml:mtext></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mtext>C</mml:mtext><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Mn</mml:mtext></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Th</mml:mtext></mml:mrow><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>prototypes, Phys. Rev. B 78 (2008).
cited as the source of values for this phase

C15_LAVES (Co–Zr)

Id: phase:co-zr:c15-laves; status assigned
Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type st:c15-cu2mg-cf24; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in CoZr-09Liu.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CoZr-10Dur.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CoZr-20Agr.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CoZr-21Zho.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CoZr-22Zho.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CoZr-23Sun.tdb also describes the disordered state
Stability: stable in 6 of 6 calculated diagram(s): 300–1853.32 K, x(Zr) 0.2525–0.34111
Literature: 71 values (71 accepted) from 4 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:co-zr:c15-laves
paper: paper:10.1007/s11669-020-00805-5:Co2Zr, paper:10.1007/s11669-020-00859-5:λ2, paper:10.1016/j.calphad.2010.02.006:Laves_C15, paper:10.1016/j.jallcom.2009.04.032:Co2Zr
tdb: tdb:CoZr-09Liu.tdb:C15_LAVES, tdb:CoZr-10Dur.tdb:C15_LAVES, tdb:CoZr-20Agr.tdb:C15_LAVES, tdb:CoZr-21Zho.tdb:C15_LAVES, tdb:CoZr-22Zho.tdb:C15_LAVES, tdb:CoZr-23Sun.tdb:C15_LAVES

TDB models of C15_LAVES (6): PHASE and CONSTITUENT statements as written

CoZr-09Liu.tdb: C15_LAVES, type code %, sha256 21ca509095023d19…

53: PHASE C15_LAVES % 2 2 1 !
54: CONST C15_LAVES : CO% ZR : CO ZR% : !

CoZr-10Dur.tdb: C15_LAVES, type code %, sha256 2b9f7fe2872d5ff7…

62: PHASE C15_LAVES % 2 2 1 !
63: CONST C15_LAVES : CO% ZR : CO ZR% : !

CoZr-20Agr.tdb: C15_LAVES, type code %, sha256 d571ff30c7e48944…

52: PHASE C15_LAVES % 2 2 1 !
53: CONST C15_LAVES : CO% ZR : CO ZR% : !

CoZr-21Zho.tdb: C15_LAVES, type code %, sha256 52e8b692e30b9251…

63: PHASE C15_LAVES % 2 2 1 !
64: CONST C15_LAVES : CO% ZR : CO ZR% : !

CoZr-22Zho.tdb: C15_LAVES, type code %, sha256 80f4492cf632b86b…

64: PHASE C15_LAVES % 2 2 1 !
65: CONST C15_LAVES : CO% ZR : CO ZR% : !

CoZr-23Sun.tdb: C15_LAVES, type code %, sha256 33d7504af3254f23…

64: PHASE C15_LAVES % 2 2 1 !
65: CONST C15_LAVES : CO% ZR : CO ZR% : !

Example references (6 of 6; assessments first):

doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00859-5 Chenyang Zhou, Hang Wang, Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems, J. Phase Equilib. Diffus. 42, 77-90 (2021).
assessment that models this phase; reports values for this phase
doi:10.1007/s11661-023-07089-7 Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental Investigation and Thermodynamic Description of the Co–Nb–Zr System, Metall Mater Trans A 54, 3021-3044 (2023).
assessment that models this phase
doi:10.1016/j.jnoncrysol.2022.121615 Chenyang Zhou, Haipeng Jin, Huakou Yang, Jinming Liu, Hang Wang, Bin Yang, Phase diagram, thermodynamic modeling and predictions of glass-forming range and ability in the Co–Cu–Zr system, Journal of Non-Crystalline Solids 588, 121615 (2022).
assessment that models this phase

CO11ZR2 (Co–Zr)

Id: phase:co-zr:co11zr2; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Co11Zr2) · oP* — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Co11Zr2) · Pban (50) — Hallstedt 2025 mmc2 row for CO11ZR2: Co11Zr2
Stoichiometry: Co 0.8462, Zr 0.1538
Stability: stable in 6 of 6 calculated diagram(s): 300–1548.49 K, x(Zr) 0.15385–0.15385
Literature: 51 values (51 accepted) from 5 papers
Interactive: phase registry entry

Names (12): corpus: corpus:phase:co-zr:co11zr2
paper: paper:10.1007/s11661-023-07089-7:Co11Zr2, paper:10.1007/s11669-020-00805-5:Co11Zr2, paper:10.1007/s11669-020-00859-5:Co11Zr2, paper:10.1016/j.calphad.2010.02.006:Co11Zr2, paper:10.1016/j.jallcom.2009.04.032:Co11Zr2
tdb: tdb:CoZr-09Liu.tdb:CO11ZR2, tdb:CoZr-10Dur.tdb:CO11ZR2, tdb:CoZr-20Agr.tdb:CO11ZR2, tdb:CoZr-21Zho.tdb:CO11ZR2, tdb:CoZr-22Zho.tdb:CO11ZR2, tdb:CoZr-23Sun.tdb:CO11ZR2

TDB models of CO11ZR2 (6): PHASE and CONSTITUENT statements as written

CoZr-09Liu.tdb: CO11ZR2, type code %, sha256 21ca509095023d19…

43: PHASE CO11ZR2 % 2 11 2 !
44: CONST CO11ZR2 : CO : ZR : !

CoZr-10Dur.tdb: CO11ZR2, type code %, sha256 2b9f7fe2872d5ff7…

52: PHASE CO11ZR2 % 2 11 2 !
53: CONST CO11ZR2 : CO : ZR : !

CoZr-20Agr.tdb: CO11ZR2, type code %, sha256 d571ff30c7e48944…

42: PHASE CO11ZR2 % 2 11 2 !
43: CONST CO11ZR2 : CO : ZR : !

CoZr-21Zho.tdb: CO11ZR2, type code %, sha256 52e8b692e30b9251…

53: PHASE CO11ZR2 % 2 11 2 !
54: CONST CO11ZR2 : CO : ZR : !

CoZr-22Zho.tdb: CO11ZR2, type code %, sha256 80f4492cf632b86b…

54: PHASE CO11ZR2 % 2 11 2 !
55: CONST CO11ZR2 : CO : ZR : !

CoZr-23Sun.tdb: CO11ZR2, type code %, sha256 33d7504af3254f23…

54: PHASE CO11ZR2 % 2 11 2 !
55: CONST CO11ZR2 : CO : ZR : !

Example references (6 of 6; assessments first):

doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00859-5 Chenyang Zhou, Hang Wang, Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems, J. Phase Equilib. Diffus. 42, 77-90 (2021).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11661-023-07089-7 Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental Investigation and Thermodynamic Description of the Co–Nb–Zr System, Metall Mater Trans A 54, 3021-3044 (2023).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jnoncrysol.2022.121615 Chenyang Zhou, Haipeng Jin, Huakou Yang, Jinming Liu, Hang Wang, Bin Yang, Phase diagram, thermodynamic modeling and predictions of glass-forming range and ability in the Co–Cu–Zr system, Journal of Non-Crystalline Solids 588, 121615 (2022).
assessment that models this phase

CO23ZR6_D8A (Co–Zr)

Id: phase:co-zr:co23zr6-d8a; status assigned
Structure: Mn23Th6 · D8_a · cF116 · Fm-3m (225); type st:d8-a-mn23th6-cf116; tier A: standard phase name; confidence high
Stoichiometry: Co 0.7931, Zr 0.2069
Stability: stable in 6 of 6 calculated diagram(s): 300–1628.06 K, x(Zr) 0.2069–0.2069
Literature: 51 values (51 accepted) from 5 papers
Interactive: phase registry entry

Names (12): corpus: corpus:phase:co-zr:co23zr6-d8a
paper: paper:10.1007/s11661-023-07089-7:Co23Zr6, paper:10.1007/s11669-020-00805-5:Co23Zr6, paper:10.1007/s11669-020-00859-5:Co23Zr6, paper:10.1016/j.calphad.2010.02.006:Co23Zr6, paper:10.1016/j.jallcom.2009.04.032:Co23Zr6
tdb: tdb:CoZr-09Liu.tdb:CO23ZR6_D8A, tdb:CoZr-10Dur.tdb:CO23ZR6_D8A, tdb:CoZr-20Agr.tdb:CO23ZR6_D8A, tdb:CoZr-21Zho.tdb:CO23ZR6_D8A, tdb:CoZr-22Zho.tdb:CO23ZR6_D8A, tdb:CoZr-23Sun.tdb:CO23ZR6_D8A

TDB models of CO23ZR6_D8A (6): PHASE and CONSTITUENT statements as written

CoZr-09Liu.tdb: CO23ZR6_D8A, type code %, sha256 21ca509095023d19…

48: PHASE CO23ZR6_D8A % 2 23 6 !
49: CONST CO23ZR6_D8A : CO : ZR : !

CoZr-10Dur.tdb: CO23ZR6_D8A, type code %, sha256 2b9f7fe2872d5ff7…

57: PHASE CO23ZR6_D8A % 2 23 6 !
58: CONST CO23ZR6_D8A : CO : ZR : !

CoZr-20Agr.tdb: CO23ZR6_D8A, type code %, sha256 d571ff30c7e48944…

47: PHASE CO23ZR6_D8A % 2 23 6 !
48: CONST CO23ZR6_D8A : CO : ZR : !

CoZr-21Zho.tdb: CO23ZR6_D8A, type code %, sha256 52e8b692e30b9251…

58: PHASE CO23ZR6_D8A % 2 23 6 !
59: CONST CO23ZR6_D8A : CO : ZR : !

CoZr-22Zho.tdb: CO23ZR6_D8A, type code %, sha256 80f4492cf632b86b…

59: PHASE CO23ZR6_D8A % 2 23 6 !
60: CONST CO23ZR6_D8A : CO : ZR : !

CoZr-23Sun.tdb: CO23ZR6_D8A, type code %, sha256 33d7504af3254f23…

59: PHASE CO23ZR6_D8A % 2 23 6 !
60: CONST CO23ZR6_D8A : CO : ZR : !

Example references (7 of 7; assessments first):

doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00859-5 Chenyang Zhou, Hang Wang, Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems, J. Phase Equilib. Diffus. 42, 77-90 (2021).
assessment that models this phase; reports values for this phase
doi:10.1007/s11661-023-07089-7 Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental Investigation and Thermodynamic Description of the Co–Nb–Zr System, Metall Mater Trans A 54, 3021-3044 (2023).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jnoncrysol.2022.121615 Chenyang Zhou, Haipeng Jin, Huakou Yang, Jinming Liu, Hang Wang, Bin Yang, Phase diagram, thermodynamic modeling and predictions of glass-forming range and ability in the Co–Cu–Zr system, Journal of Non-Crystalline Solids 588, 121615 (2022).
assessment that models this phase
doi:10.1016/0364-5916(83)90024-x J.C. Gachon, Enthalpies of formation of binary phases in the systems FeTi, FeZr, CoTi, CoZr, NiTi, and NiZr, by direct reaction calorimetry, Calphad (1983).
cited as the source of values for this phase

CO2ZR_C15 (Co–Zr)

Id: phase:co-zr:co2zr-c15; status assigned
Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type st:c15-cu2mg-cf24; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaabjt and oqmd-31202, space group 227
Stoichiometry: Co 0.6667, Zr 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–2073.51 K, x(Zr) 0.33333–0.33333
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:co-zr:co2zr-c15
mp: mp:mp-aaaaabjt
oqmd: oqmd:oqmd-31202
tdb: tdb:CoZr-06Bra.tdb:CO2ZR_C15

TDB models of CO2ZR_C15 (1): PHASE and CONSTITUENT statements as written

CoZr-06Bra.tdb: CO2ZR_C15, type code %, sha256 4cf053b4e5984583…

44: PHASE CO2ZR_C15 % 2 2 1 !
45: CONST CO2ZR_C15 : CO : ZR : !

Example references (1 of 1; assessments first):

doi:10.1361/154770306X109746 J. Bratberg, B. Jansson, J. Phase Equilib. Diffus., 27, 213-19(2006).
assessment that models this phase

COZR_B2 (Co–Zr)

Id: phase:co-zr:cozr-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Stoichiometry: Co 0.5000, Zr 0.5000
Stability: stable in 3 of 3 calculated diagram(s): 300–1821.89 K, x(Zr) 0.5–0.5
Literature: 48 values (48 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:co-zr:cozr-b2
paper: paper:10.1007/s11669-020-00805-5:CoZr, paper:10.1016/j.jallcom.2009.04.032:CoZr
tdb: tdb:CoZr-06Bra.tdb:COZR_B2, tdb:CoZr-09Liu.tdb:COZR_B2, tdb:CoZr-20Agr.tdb:COZR_B2

TDB models of COZR_B2 (3): PHASE and CONSTITUENT statements as written

CoZr-06Bra.tdb: COZR_B2, type code %, sha256 4cf053b4e5984583…

49: PHASE COZR_B2 % 2 1 1 !
50: CONST COZR_B2 : CO : ZR : !

CoZr-09Liu.tdb: COZR_B2, type code %, sha256 21ca509095023d19…

58: PHASE COZR_B2 % 2 1 1 !
59: CONST COZR_B2 : CO : ZR : !

CoZr-20Agr.tdb: COZR_B2, type code %, sha256 d571ff30c7e48944…

57: PHASE COZR_B2 % 2 1 1 !
58: CONST COZR_B2 : CO : ZR : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
assessment that models this phase; reports values for this phase
doi:10.1361/154770306X109746 J. Bratberg, B. Jansson, J. Phase Equilib. Diffus., 27, 213-19(2006).
assessment that models this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
cited as the source of values for this phase

COZR2 (Co–Zr)

Id: phase:co-zr:cozr2; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
Candidate (dft_mp): I4/mcm (140) — on-hull MP Zr2Co at x(ZR)=0.6667
Candidate (tdb_comment): NiTi2 · cF96 · Fd-3m — CoZr-06Bra.tdb: 'Prototype NiTi2 (cF96, Fd-3m)'
Stoichiometry: Co 0.3333, Zr 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–1582.37 K, x(Zr) 0.66667–0.66667
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:co-zr:cozr2
paper: paper:10.1361/154770306x109746:CoZr2
tdb: tdb:CoZr-06Bra.tdb:COZR2

TDB models of COZR2 (1): PHASE and CONSTITUENT statements as written

CoZr-06Bra.tdb: COZR2, type code %, sha256 4cf053b4e5984583…

54: PHASE COZR2 % 2 1 2 !
55: CONST COZR2 : CO : ZR : !

Example references (1 of 1; assessments first):

doi:10.1361/154770306X109746 J. Bratberg, B. Jansson, J. Phase Equilib. Diffus., 27, 213-19(2006).
assessment that models this phase; reports values for this phase

COZR2_C16 (Co–Zr)

Id: phase:co-zr:cozr2-c16; status assigned
Structure: Al2Cu · C16 · tI12 · I4/mcm (140); type st:c16-al2cu-ti12; tier A: standard phase name; confidence high
Stability: stable in 6 of 6 calculated diagram(s): 300–1398.53 K, x(Zr) 0.66667–0.66845
Literature: 80 values (80 accepted) from 4 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:co-zr:cozr2-c16
paper: paper:10.1007/s11669-020-00805-5:CoZr2, paper:10.1007/s11669-020-00859-5:CoZr2, paper:10.1016/j.calphad.2010.02.006:CoZr2, paper:10.1016/j.jallcom.2009.04.032:CoZr2
tdb: tdb:CoZr-09Liu.tdb:COZR2_C16, tdb:CoZr-10Dur.tdb:COZR2_C16, tdb:CoZr-20Agr.tdb:COZR2_C16, tdb:CoZr-21Zho.tdb:COZR2_C16, tdb:CoZr-22Zho.tdb:COZR2_C16, tdb:CoZr-23Sun.tdb:COZR2_C16

TDB models of COZR2_C16 (6): PHASE and CONSTITUENT statements as written

CoZr-09Liu.tdb: COZR2_C16, type code %, sha256 21ca509095023d19…

63: PHASE COZR2_C16 % 2 1 2 !
64: CONST COZR2_C16 : CO : ZR : !

CoZr-10Dur.tdb: COZR2_C16, type code %, sha256 2b9f7fe2872d5ff7…

67: PHASE COZR2_C16 % 2 1 2 !
68: CONST COZR2_C16 : CO% ZR : ZR : !

CoZr-20Agr.tdb: COZR2_C16, type code %, sha256 d571ff30c7e48944…

62: PHASE COZR2_C16 % 2 1 2 !
63: CONST COZR2_C16 : CO : ZR : !

CoZr-21Zho.tdb: COZR2_C16, type code %, sha256 52e8b692e30b9251…

68: PHASE COZR2_C16 % 2 1 2 !
69: CONST COZR2_C16 : CO : ZR : !

CoZr-22Zho.tdb: COZR2_C16, type code %, sha256 80f4492cf632b86b…

69: PHASE COZR2_C16 % 2 1 2 !
70: CONST COZR2_C16 : CO : ZR : !

CoZr-23Sun.tdb: COZR2_C16, type code %, sha256 33d7504af3254f23…

69: PHASE COZR2_C16 % 2 1 2 !
70: CONST COZR2_C16 : CO% ZR : ZR : !

Example references (10 of 10; assessments first):

doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00859-5 Chenyang Zhou, Hang Wang, Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems, J. Phase Equilib. Diffus. 42, 77-90 (2021).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11661-023-07089-7 Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental Investigation and Thermodynamic Description of the Co–Nb–Zr System, Metall Mater Trans A 54, 3021-3044 (2023).
assessment that models this phase
doi:10.1016/j.jnoncrysol.2022.121615 Chenyang Zhou, Haipeng Jin, Huakou Yang, Jinming Liu, Hang Wang, Bin Yang, Phase diagram, thermodynamic modeling and predictions of glass-forming range and ability in the Co–Cu–Zr system, Journal of Non-Crystalline Solids 588, 121615 (2022).
assessment that models this phase
doi:10.1007/s11106-016-9751-x O. L. Semenova, V. M. Petyukh, O. S. Fomichev, The Constitution of Co–Zr Phase Diagram, Powder Metall Met Ceram 54, 583-589 (2016).
cited as the source of values for this phase
doi:10.1016/0364-5916(83)90024-x J.C. Gachon, Enthalpies of formation of binary phases in the systems FeTi, FeZr, CoTi, CoZr, NiTi, and NiZr, by direct reaction calorimetry, Calphad (1983).
cited as the source of values for this phase
doi:10.1016/s0925-8388(98)00246-1 Qiti Guo, O.J. Kleppa, Standard enthalpies of formation of some alloys formed between group IV elements and group VIII elements, determined by high-temperature direct synthesis calorimetry, Journal of Alloys and Compounds 269, 181-186 (1998).
cited as the source of values for this phase
doi:10.1103/physrevb.78.144414 P. R. Ohodnicki, N. C. Cates, D. E. Laughlin, M. E. McHenry, M. Widom, Ab initiotheoretical study of magnetization and phase stability of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>Fe</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Co</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Ni</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mtext>B</mml:mtext><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>Fe</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Co</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Ni</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Zr</mml:mtext></mml:mrow><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>structures of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Cr</mml:mtext></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mtext>C</mml:mtext><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Mn</mml:mtext></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Th</mml:mtext></mml:mrow><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>prototypes, Phys. Rev. B 78 (2008).
cited as the source of values for this phase

COZR3 (Co–Zr)

Id: phase:co-zr:cozr3; status assigned
Structure: Re3B · E1_a · oC16 · Cmcm (63); type st:e1-a-re3b-oc16; 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 6 of 6 calculated diagram(s): 300–1254.33 K, x(Zr) 0.7468–0.75592
Literature: 28 values (28 accepted) from 3 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:co-zr:cozr3
paper: paper:10.1007/s11669-020-00859-5:CoZr3, paper:10.1016/j.calphad.2010.02.006:CoZr3, paper:10.1016/j.jallcom.2009.04.032:CoZr3
tdb: tdb:CoZr-09Liu.tdb:COZR3, tdb:CoZr-10Dur.tdb:COZR3, tdb:CoZr-20Agr.tdb:COZR3, tdb:CoZr-21Zho.tdb:COZR3, tdb:CoZr-22Zho.tdb:COZR3, tdb:CoZr-23Sun.tdb:COZR3

TDB models of COZR3 (6): PHASE and CONSTITUENT statements as written

CoZr-09Liu.tdb: COZR3, type code %, sha256 21ca509095023d19…

68: PHASE COZR3 % 2 1 3 !
69: CONST COZR3 : CO : ZR : !

CoZr-10Dur.tdb: COZR3, type code %, sha256 2b9f7fe2872d5ff7…

74: PHASE COZR3 % 3 1 1 2 !
75: CONST COZR3 : CO% ZR : CO ZR% : ZR : !

CoZr-20Agr.tdb: COZR3, type code %, sha256 d571ff30c7e48944…

67: PHASE COZR3 % 2 1 3 !
68: CONST COZR3 : CO : ZR : !

CoZr-21Zho.tdb: COZR3, type code %, sha256 52e8b692e30b9251…

75: PHASE COZR3 % 2 1 3 !
76: CONST COZR3 : CO : ZR : !

CoZr-22Zho.tdb: COZR3, type code %, sha256 80f4492cf632b86b…

76: PHASE COZR3 % 2 1 3 !
77: CONST COZR3 : CO : ZR : !

CoZr-23Sun.tdb: COZR3, type code %, sha256 33d7504af3254f23…

76: PHASE COZR3 % 3 1 1 2 !
77: CONST COZR3 : CO% ZR : CO ZR% : ZR : !

Example references (8 of 8; assessments first):

doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00859-5 Chenyang Zhou, Hang Wang, Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems, J. Phase Equilib. Diffus. 42, 77-90 (2021).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
assessment that models this phase; cited as the source of values for this phase
doi:10.1007/s11661-023-07089-7 Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental Investigation and Thermodynamic Description of the Co–Nb–Zr System, Metall Mater Trans A 54, 3021-3044 (2023).
assessment that models this phase
doi:10.1016/j.jnoncrysol.2022.121615 Chenyang Zhou, Haipeng Jin, Huakou Yang, Jinming Liu, Hang Wang, Bin Yang, Phase diagram, thermodynamic modeling and predictions of glass-forming range and ability in the Co–Cu–Zr system, Journal of Non-Crystalline Solids 588, 121615 (2022).
assessment that models this phase
doi:10.1007/s11106-016-9751-x O. L. Semenova, V. M. Petyukh, O. S. Fomichev, The Constitution of Co–Zr Phase Diagram, Powder Metall Met Ceram 54, 583-589 (2016).
cited as the source of values for this phase
doi:10.1103/physrevb.78.144414 P. R. Ohodnicki, N. C. Cates, D. E. Laughlin, M. E. McHenry, M. Widom, Ab initiotheoretical study of magnetization and phase stability of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>Fe</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Co</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Ni</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mtext>B</mml:mtext><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>Fe</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Co</mml:mtext><mml:mo>,</mml:mo><mml:mtext>Ni</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Zr</mml:mtext></mml:mrow><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>structures of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Cr</mml:mtext></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mtext>C</mml:mtext><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Mn</mml:mtext></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Th</mml:mtext></mml:mrow><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>prototypes, Phys. Rev. B 78 (2008).
cited as the source of values for this phase

FCC_A1 (Co–Zr)

Id: phase:co-zr: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 7 of 7 calculated diagram(s): 619.99–1794.78 K, x(Zr) 0–0.01229
Literature: 14 values (14 accepted) from 4 papers
Interactive: phase registry entry

Names (12): corpus: corpus:phase:co-zr:fcc-a1
paper: paper:10.1007/s11661-023-07089-7:fcc(Co), paper:10.1007/s11669-020-00859-5:fcc(Co), paper:10.1016/j.calphad.2010.02.006:FCC_A1, paper:10.1016/j.jallcom.2009.04.032:(αCo)
tdb: tdb:CoZr-06Bra.tdb:FCC_A1, tdb:CoZr-09Liu.tdb:FCC_A1, tdb:CoZr-10Dur.tdb:FCC_A1, tdb:CoZr-20Agr.tdb:FCC_A1, tdb:CoZr-21Zho.tdb:FCC_A1, tdb:CoZr-22Zho.tdb:FCC_A1, tdb:CoZr-23Sun.tdb:FCC_A1

TDB models of FCC_A1 (7): PHASE and CONSTITUENT statements as written

CoZr-06Bra.tdb: FCC_A1, type code %A, sha256 4cf053b4e5984583…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : CO% ZR : VA : !

CoZr-09Liu.tdb: FCC_A1, type code %A, sha256 21ca509095023d19…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : CO% ZR : VA : !

CoZr-10Dur.tdb: FCC_A1, type code %A, sha256 2b9f7fe2872d5ff7…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : CO% ZR : VA : !

CoZr-20Agr.tdb: FCC_A1, type code %A, sha256 d571ff30c7e48944…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : CO% ZR : VA : !

CoZr-21Zho.tdb: FCC_A1, type code %A, sha256 52e8b692e30b9251…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : CO% ZR : VA : !

CoZr-22Zho.tdb: FCC_A1, type code %A, sha256 80f4492cf632b86b…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : CO% ZR : VA : !

CoZr-23Sun.tdb: FCC_A1, type code %A, sha256 33d7504af3254f23…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : CO% ZR : VA : !

Example references (7 of 7; assessments first):

doi:10.1007/s11669-020-00859-5 Chenyang Zhou, Hang Wang, Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems, J. Phase Equilib. Diffus. 42, 77-90 (2021).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
assessment that models this phase; cited as the source of values for this phase
doi:10.1007/s11661-023-07089-7 Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental Investigation and Thermodynamic Description of the Co–Nb–Zr System, Metall Mater Trans A 54, 3021-3044 (2023).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jnoncrysol.2022.121615 Chenyang Zhou, Haipeng Jin, Huakou Yang, Jinming Liu, Hang Wang, Bin Yang, Phase diagram, thermodynamic modeling and predictions of glass-forming range and ability in the Co–Cu–Zr system, Journal of Non-Crystalline Solids 588, 121615 (2022).
assessment that models this phase
doi:10.1361/154770306X109746 J. Bratberg, B. Jansson, J. Phase Equilib. Diffus., 27, 213-19(2006).
assessment that models this phase

HCP_A3 (Co–Zr)

Id: phase:co-zr: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 7 of 7 calculated diagram(s): 300–2060.04 K, x(Zr) 0–1
Literature: 12 values (12 accepted) from 3 papers
Interactive: phase registry entry

Names (12): corpus: corpus:phase:co-zr:hcp-a3
paper: paper:10.1007/s11669-020-00859-5:hcp(Co), paper:10.1007/s11669-020-00859-5:hcp(Zr), paper:10.1016/j.calphad.2010.02.006:HCP_A3, paper:10.1016/j.jallcom.2009.04.032:(αZr)
tdb: tdb:CoZr-06Bra.tdb:HCP_A3, tdb:CoZr-09Liu.tdb:HCP_A3, tdb:CoZr-10Dur.tdb:HCP_A3, tdb:CoZr-20Agr.tdb:HCP_A3, tdb:CoZr-21Zho.tdb:HCP_A3, tdb:CoZr-22Zho.tdb:HCP_A3, tdb:CoZr-23Sun.tdb:HCP_A3

TDB models of HCP_A3 (7): PHASE and CONSTITUENT statements as written

CoZr-06Bra.tdb: HCP_A3, type code %A, sha256 4cf053b4e5984583…

39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : CO% ZR% : VA : !

CoZr-09Liu.tdb: HCP_A3, type code %A, sha256 21ca509095023d19…

38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : CO% ZR% : VA : !

CoZr-10Dur.tdb: HCP_A3, type code %A, sha256 2b9f7fe2872d5ff7…

47: PHASE HCP_A3 %A 2 1 0.5 !
48: CONST HCP_A3 : CO% ZR% : VA : !

CoZr-20Agr.tdb: HCP_A3, type code %A, sha256 d571ff30c7e48944…

37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : CO% ZR% : VA : !

CoZr-21Zho.tdb: HCP_A3, type code %A, sha256 52e8b692e30b9251…

48: PHASE HCP_A3 %A 2 1 0.5 !
49: CONST HCP_A3 : CO% ZR% : VA : !

CoZr-22Zho.tdb: HCP_A3, type code %A, sha256 80f4492cf632b86b…

49: PHASE HCP_A3 %A 2 1 0.5 !
50: CONST HCP_A3 : CO% ZR% : VA : !

CoZr-23Sun.tdb: HCP_A3, type code %A, sha256 33d7504af3254f23…

49: PHASE HCP_A3 %A 2 1 0.5 !
50: CONST HCP_A3 : CO% ZR% : VA : !

Example references (7 of 7; assessments first):

doi:10.1007/s11669-020-00859-5 Chenyang Zhou, Hang Wang, Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems, J. Phase Equilib. Diffus. 42, 77-90 (2021).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
assessment that models this phase; reports values for this phase
doi:10.1007/s11661-023-07089-7 Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental Investigation and Thermodynamic Description of the Co–Nb–Zr System, Metall Mater Trans A 54, 3021-3044 (2023).
assessment that models this phase
doi:10.1016/j.jnoncrysol.2022.121615 Chenyang Zhou, Haipeng Jin, Huakou Yang, Jinming Liu, Hang Wang, Bin Yang, Phase diagram, thermodynamic modeling and predictions of glass-forming range and ability in the Co–Cu–Zr system, Journal of Non-Crystalline Solids 588, 121615 (2022).
assessment that models this phase
doi:10.1361/154770306X109746 J. Bratberg, B. Jansson, J. Phase Equilib. Diffus., 27, 213-19(2006).
assessment that models this phase

LIQUID (Co–Zr)

Id: phase:co-zr:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 7 of 7 calculated diagram(s): 1256.32–4000 K, x(Zr) 0–1
Literature: 165 values (165 accepted) from 5 papers
Interactive: phase registry entry

Names (14): corpus: corpus:phase:co-zr:liquid
paper: paper:10.1007/s11661-023-07089-7:Liq., paper:10.1007/s11669-020-00805-5:L, paper:10.1007/s11669-020-00859-5:L, paper:10.1016/j.calphad.2010.02.006:L, paper:10.1016/j.jallcom.2009.04.032:Liquid, paper:10.1016/j.jallcom.2009.04.032:liquid
tdb: tdb:CoZr-06Bra.tdb:LIQUID, tdb:CoZr-09Liu.tdb:LIQUID, tdb:CoZr-10Dur.tdb:LIQUID, tdb:CoZr-20Agr.tdb:LIQUID, tdb:CoZr-21Zho.tdb:LIQUID, tdb:CoZr-22Zho.tdb:LIQUID, tdb:CoZr-23Sun.tdb:LIQUID

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

CoZr-06Bra.tdb: LIQUID, type code %, sha256 4cf053b4e5984583…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : CO ZR : !

CoZr-09Liu.tdb: LIQUID, type code %, sha256 21ca509095023d19…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : CO ZR : !

CoZr-10Dur.tdb: LIQUID, type code %, sha256 2b9f7fe2872d5ff7…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : CO ZR : !

CoZr-20Agr.tdb: LIQUID, type code %, sha256 d571ff30c7e48944…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : CO ZR : !

CoZr-21Zho.tdb: LIQUID, type code %, sha256 52e8b692e30b9251…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : CO ZR : !

CoZr-22Zho.tdb: LIQUID, type code %, sha256 80f4492cf632b86b…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : CO ZR : !

CoZr-23Sun.tdb: LIQUID, type code %, sha256 33d7504af3254f23…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : CO ZR : !

Example references (8 of 8; assessments first):

doi:10.1016/j.jallcom.2009.04.032 X.J. Liu, H.H. Zhang, C.P. Wang, K. Ishida, Experimental determination and thermodynamic assessment of the phase diagram in the Co–Zr system, Journal of Alloys and Compounds 482, 99-105 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00805-5 Pavel Agraval, Liya Dreval, Mikhail Turchanin, Tamara Velikanova, Thermodynamic Assessment of the Co-Zr System, J. Phase Equilib. Diffus. 41, 491-499 (2020).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-020-00859-5 Chenyang Zhou, Hang Wang, Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems, J. Phase Equilib. Diffus. 42, 77-90 (2021).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2010.02.006 A. Durga, K.C. Hari Kumar, Thermodynamic optimization of the Co–Zr system, Calphad 34, 200-205 (2010).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11661-023-07089-7 Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental Investigation and Thermodynamic Description of the Co–Nb–Zr System, Metall Mater Trans A 54, 3021-3044 (2023).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jnoncrysol.2022.121615 Chenyang Zhou, Haipeng Jin, Huakou Yang, Jinming Liu, Hang Wang, Bin Yang, Phase diagram, thermodynamic modeling and predictions of glass-forming range and ability in the Co–Cu–Zr system, Journal of Non-Crystalline Solids 588, 121615 (2022).
assessment that models this phase
doi:10.1361/154770306X109746 J. Bratberg, B. Jansson, J. Phase Equilib. Diffus., 27, 213-19(2006).
assessment that models this phase
doi:10.1007/s11106-016-9751-x O. L. Semenova, V. M. Petyukh, O. S. Fomichev, The Constitution of Co–Zr Phase Diagram, Powder Metall Met Ceram 54, 583-589 (2016).
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}
}