# Co–Nb phases

> Co–Nb system: 11 phases (tier A 7, liquid 1, needs_review 3); 11 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references.

HTML: https://data.orchid-project.org/phases/pages/CO-NB.html · Markdown: https://data.orchid-project.org/phases/pages/CO-NB.md

11 phases (tier A 7, liquid 1, needs_review 3); 11 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](https://orchid-project.org/phases/?q=CO-NB) · [full JSON](https://data.orchid-project.org/phases/systems/CO-NB.json) · [Co–Nb system page](https://data.orchid-project.org/systems/CO-NB.html) · [Markdown](https://data.orchid-project.org/phases/pages/CO-NB.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Co–Nb system (11)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-co-nb-bcc-a2); _phase:co-nb:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 4 of 4 calculated diagram(s): 300–3999.98 K, x(Nb) 0.94182–1 | 12 | 4 |
| [C14_LAVES](#phase-co-nb-c14-laves); _phase:co-nb:c14-laves_ | MgZn2 · C14 · hP12 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 1511.5–1696.9 K, x(Nb) 0.3583–0.37375 | 26 | 3 |
| [C15_LAVES](#phase-co-nb-c15-laves); _phase:co-nb:c15-laves_ | Cu2Mg · C15 · cF24 · Fd-3m (227) | tier A: standard phase name | stable in 4 of 4 calculated diagram(s): 300–1756.47 K, x(Nb) 0.25058–0.35362 | 59 | 4 |
| [C36_LAVES](#phase-co-nb-c36-laves); _phase:co-nb:c36-laves_ | MgNi2 · C36 · hP24 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 1302.19–1537.36 K, x(Nb) 0.23704–0.25743 | 32 | 3 |
| [CO16NB9_C14](#phase-co-nb-co16nb9-c14); _phase:co-nb:co16nb9-c14_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 1460–1700.54 K, x(Nb) 0.36–0.36 | 9 | 1 |
| [CO3NB_C36](#phase-co-nb-co3nb-c36); _phase:co-nb:co3nb-c36_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 1277.93–1521.8 K, x(Nb) 0.25–0.25 | 12 | 1 |
| [CO7NB2](#phase-co-nb-co7nb2); _phase:co-nb:co7nb2_ |  | needs_review | stable in 4 of 4 calculated diagram(s): 300–1359.48 K, x(Nb) 0.22222–0.22222 | 23 | 4 |
| [MU_D85](#phase-co-nb-d85-mu); _phase:co-nb:d85-mu_ | Fe7W6 · D8_5 · hR13 · R-3m (166) | tier A: standard phase name | stable in 4 of 4 calculated diagram(s): 300–1708.54 K, x(Nb) 0.45992–0.56446 | 48 | 4 |
| [FCC_A1](#phase-co-nb-fcc-a1); _phase:co-nb:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 4 of 4 calculated diagram(s): 688.19–1768.99 K, x(Nb) 0–0.05372 | 27 | 4 |
| [HCP_A3](#phase-co-nb-hcp-a3); _phase:co-nb:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 4 of 4 calculated diagram(s): 300–819.19 K, x(Nb) 0–7e-05 | 3 | 4 |
| [LIQUID](#phase-co-nb-liquid); _phase:co-nb:liquid_ | liquid | liquid | stable in 4 of 4 calculated diagram(s): 1503.83–4000 K, x(Nb) 0–1 | 90 | 4 |

## BCC_A2 (Co–Nb)

- Id: `phase:co-nb: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 4 of 4 calculated diagram(s): 300–3999.98 K, x(Nb) 0.94182–1
- Literature: 12 values (12 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:bcc-a2)

Names (8): _corpus: _corpus:phase:co-nb:bcc-a2  
_paper: _paper:10.1007/s11661-020-05963-2:bcc(Nb), paper:10.1016/j.jallcom.2015.02.182:(Nb), paper:10.1016/s0925-8388(97)00465-9:bcc  
_tdb: _tdb:CoNb-15He.tdb:BCC_A2, tdb:CoNb-20Zho.tdb:BCC_A2, tdb:CoNb-22Wei.tdb:BCC_A2, tdb:CoNb-98Har-LB.tdb:BCC_A2  


### TDB models of BCC_A2 (4): PHASE and CONSTITUENT statements as written

[CoNb-15He.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-15He.tdb): BCC_A2, type code %B, sha256 `870ac3d5afa50fc9…`

~~~~text
30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : CO NB% : VA : !
~~~~

[CoNb-20Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-20Zho.tdb): BCC_A2, type code %B, sha256 `9a76c67c6bba1992…`

~~~~text
33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : CO NB% : VA : !
~~~~

[CoNb-22Wei.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-22Wei.tdb): BCC_A2, type code %B, sha256 `9d02f9031327c346…`

~~~~text
40: PHASE BCC_A2 %B 2 1 3 !
41: CONST BCC_A2 : CO NB% : VA : !
~~~~

[CoNb-98Har-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-98Har-LB.tdb): BCC_A2, type code %B, sha256 `0243c89a99fdd870…`

~~~~text
31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : CO NB% : VA : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.jallcom.2015.02.182](https://doi.org/10.1016/j.jallcom.2015.02.182) Cuiyun He, Frank Stein, Martin Palm, Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb, Journal of Alloys and Compounds 637, 361-375 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00465-9](https://doi.org/10.1016/S0925-8388%2897%2900465-9) K.C. Hari Kumar, I. Ansara, P. Wollants, L. Delaye, J. Alloys Compd., 267, 105-12(1998).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11661-020-05963-2](https://doi.org/10.1007/s11661-020-05963-2) Chenyang Zhou, Cuiping Guo, Jingbo Li, Changrong Li, Zhenmin Du, Key Experiments and Thermodynamic Description of the Co-Nb-Ni System, Metall Mater Trans A 51, 5892-5911 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2022.166516](https://doi.org/10.1016/j.jallcom.2022.166516) Dawei Wei, Xiaofeng Bai, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Co–Nb–Ti system, Journal of Alloys and Compounds 924, 166516 (2022).  
_assessment that models this phase_
- [doi:10.1016/0022-5088(67)90004-5](https://doi.org/10.1016/0022-5088%2867%2990004-5) J.K. Pargeter, W. Hume-Rothery, The constitution of niobium-cobalt alloys, Journal of the Less Common Metals 12, 366-374 (1967).  
_cited as the source of values for this phase_

## C14_LAVES (Co–Nb)

- Id: `phase:co-nb:c14-laves`; status `assigned`
- Structure: MgZn2 · C14 · hP12 · P6_3/mmc (194); type `st:c14-mgzn2-hp12`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in CoNb-15He.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in CoNb-20Zho.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in CoNb-22Wei.tdb also describes the disordered state
- Stability: stable in 3 of 3 calculated diagram(s): 1511.5–1696.9 K, x(Nb) 0.3583–0.37375
- Literature: 26 values (26 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:c14-laves)

Names (6): _corpus: _corpus:phase:co-nb:c14-laves  
_paper: _paper:10.1007/s11661-020-05963-2:λ1, paper:10.1016/j.jallcom.2015.02.182:C14  
_tdb: _tdb:CoNb-15He.tdb:C14_LAVES, tdb:CoNb-20Zho.tdb:C14_LAVES, tdb:CoNb-22Wei.tdb:C14_LAVES  


### TDB models of C14_LAVES (3): PHASE and CONSTITUENT statements as written

[CoNb-15He.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-15He.tdb): C14_LAVES, type code %, sha256 `870ac3d5afa50fc9…`

~~~~text
55: PHASE C14_LAVES % 2 2 1 !
56: CONST C14_LAVES : CO% NB : CO NB% : !
~~~~

[CoNb-20Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-20Zho.tdb): C14_LAVES, type code %, sha256 `9a76c67c6bba1992…`

~~~~text
58: PHASE C14_LAVES % 2 2 1 !
59: CONST C14_LAVES : CO% NB : CO NB% : !
~~~~

[CoNb-22Wei.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-22Wei.tdb): C14_LAVES, type code %, sha256 `9d02f9031327c346…`

~~~~text
65: PHASE C14_LAVES % 2 2 1 !
66: CONST C14_LAVES : CO% NB : CO NB% : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1016/j.jallcom.2015.02.182](https://doi.org/10.1016/j.jallcom.2015.02.182) Cuiyun He, Frank Stein, Martin Palm, Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb, Journal of Alloys and Compounds 637, 361-375 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11661-020-05963-2](https://doi.org/10.1007/s11661-020-05963-2) Chenyang Zhou, Cuiping Guo, Jingbo Li, Changrong Li, Zhenmin Du, Key Experiments and Thermodynamic Description of the Co-Nb-Ni System, Metall Mater Trans A 51, 5892-5911 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2022.166516](https://doi.org/10.1016/j.jallcom.2022.166516) Dawei Wei, Xiaofeng Bai, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Co–Nb–Ti system, Journal of Alloys and Compounds 924, 166516 (2022).  
_assessment that models this phase_
- [doi:10.1016/j.intermet.2008.02.017](https://doi.org/10.1016/j.intermet.2008.02.017) F. Stein, D. Jiang, M. Palm, G. Sauthoff, D. Grüner, G. Kreiner, Experimental reinvestigation of the Co–Nb phase diagram, Intermetallics 16, 785-792 (2008).  
_cited as the source of values for this phase_
- [doi:10.1016/s0925-8388(97)00465-9](https://doi.org/10.1016/s0925-8388%2897%2900465-9) K.C.Hari Kumar, I. Ansara, P. Wollants, L. Delaey, Thermodynamic optimisation of the Co–Nb system, Journal of Alloys and Compounds 267, 105-112 (1998).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(67)90004-5](https://doi.org/10.1016/0022-5088%2867%2990004-5) J.K. Pargeter, W. Hume-Rothery, The constitution of niobium-cobalt alloys, Journal of the Less Common Metals 12, 366-374 (1967).  
_cited as the source of values for this phase_

## C15_LAVES (Co–Nb)

- Id: `phase:co-nb: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 CoNb-15He.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in CoNb-20Zho.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in CoNb-22Wei.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in CoNb-98Har-LB.tdb also describes the disordered state
- Stability: stable in 4 of 4 calculated diagram(s): 300–1756.47 K, x(Nb) 0.25058–0.35362
- Literature: 59 values (59 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:c15-laves)

Names (8): _corpus: _corpus:phase:co-nb:c15-laves  
_paper: _paper:10.1007/s11661-020-05963-2:λ2, paper:10.1016/j.jallcom.2015.02.182:C15, paper:10.1016/s0925-8388(97)00465-9:λ  
_tdb: _tdb:CoNb-15He.tdb:C15_LAVES, tdb:CoNb-20Zho.tdb:C15_LAVES, tdb:CoNb-22Wei.tdb:C15_LAVES, tdb:CoNb-98Har-LB.tdb:C15_LAVES  


### TDB models of C15_LAVES (4): PHASE and CONSTITUENT statements as written

[CoNb-15He.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-15He.tdb): C15_LAVES, type code %, sha256 `870ac3d5afa50fc9…`

~~~~text
50: PHASE C15_LAVES % 2 2 1 !
51: CONST C15_LAVES : CO% NB : CO NB% : !
~~~~

[CoNb-20Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-20Zho.tdb): C15_LAVES, type code %, sha256 `9a76c67c6bba1992…`

~~~~text
53: PHASE C15_LAVES % 2 2 1 !
54: CONST C15_LAVES : CO% NB : CO NB% : !
~~~~

[CoNb-22Wei.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-22Wei.tdb): C15_LAVES, type code %, sha256 `9d02f9031327c346…`

~~~~text
60: PHASE C15_LAVES % 2 2 1 !
61: CONST C15_LAVES : CO% NB : CO NB% : !
~~~~

[CoNb-98Har-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-98Har-LB.tdb): C15_LAVES, type code %, sha256 `0243c89a99fdd870…`

~~~~text
51: PHASE C15_LAVES % 2 2 1 !
52: CONST C15_LAVES : CO% NB : CO NB% : !
~~~~

Example references (7 of 7; assessments first): 

- [doi:10.1016/j.jallcom.2015.02.182](https://doi.org/10.1016/j.jallcom.2015.02.182) Cuiyun He, Frank Stein, Martin Palm, Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb, Journal of Alloys and Compounds 637, 361-375 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00465-9](https://doi.org/10.1016/S0925-8388%2897%2900465-9) K.C. Hari Kumar, I. Ansara, P. Wollants, L. Delaye, J. Alloys Compd., 267, 105-12(1998).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11661-020-05963-2](https://doi.org/10.1007/s11661-020-05963-2) Chenyang Zhou, Cuiping Guo, Jingbo Li, Changrong Li, Zhenmin Du, Key Experiments and Thermodynamic Description of the Co-Nb-Ni System, Metall Mater Trans A 51, 5892-5911 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2022.166516](https://doi.org/10.1016/j.jallcom.2022.166516) Dawei Wei, Xiaofeng Bai, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Co–Nb–Ti system, Journal of Alloys and Compounds 924, 166516 (2022).  
_assessment that models this phase_
- [doi:10.1016/j.intermet.2008.02.017](https://doi.org/10.1016/j.intermet.2008.02.017) F. Stein, D. Jiang, M. Palm, G. Sauthoff, D. Grüner, G. Kreiner, Experimental reinvestigation of the Co–Nb phase diagram, Intermetallics 16, 785-792 (2008).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(67)90004-5](https://doi.org/10.1016/0022-5088%2867%2990004-5) J.K. Pargeter, W. Hume-Rothery, The constitution of niobium-cobalt alloys, Journal of the Less Common Metals 12, 366-374 (1967).  
_cited as the source of values for this phase_
- [doi:10.1515/ijmr-1938-300917](https://doi.org/10.1515/ijmr-1938-300917) W. ¨ Koster, W. Mulfinger, Z. Metallkde. 30 (1938) 348.  
_cited as the source of values for this phase_

## C36_LAVES (Co–Nb)

- Id: `phase:co-nb:c36-laves`; status `assigned`
- Structure: MgNi2 · C36 · hP24 · P6_3/mmc (194); type `st:c36-mgni2-hp24`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in CoNb-15He.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in CoNb-20Zho.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in CoNb-22Wei.tdb also describes the disordered state
- Stability: stable in 3 of 3 calculated diagram(s): 1302.19–1537.36 K, x(Nb) 0.23704–0.25743
- Literature: 32 values (32 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:c36-laves)

Names (6): _corpus: _corpus:phase:co-nb:c36-laves  
_paper: _paper:10.1007/s11661-020-05963-2:λ3, paper:10.1016/j.jallcom.2015.02.182:C36  
_tdb: _tdb:CoNb-15He.tdb:C36_LAVES, tdb:CoNb-20Zho.tdb:C36_LAVES, tdb:CoNb-22Wei.tdb:C36_LAVES  


### TDB models of C36_LAVES (3): PHASE and CONSTITUENT statements as written

[CoNb-15He.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-15He.tdb): C36_LAVES, type code %, sha256 `870ac3d5afa50fc9…`

~~~~text
45: PHASE C36_LAVES % 2 2 1 !
46: CONST C36_LAVES : CO% NB : CO NB% : !
~~~~

[CoNb-20Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-20Zho.tdb): C36_LAVES, type code %, sha256 `9a76c67c6bba1992…`

~~~~text
48: PHASE C36_LAVES % 2 2 1 !
49: CONST C36_LAVES : CO% NB : CO NB% : !
~~~~

[CoNb-22Wei.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-22Wei.tdb): C36_LAVES, type code %, sha256 `9d02f9031327c346…`

~~~~text
55: PHASE C36_LAVES % 2 2 1 !
56: CONST C36_LAVES : CO% NB : CO NB% : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1016/j.jallcom.2015.02.182](https://doi.org/10.1016/j.jallcom.2015.02.182) Cuiyun He, Frank Stein, Martin Palm, Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb, Journal of Alloys and Compounds 637, 361-375 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11661-020-05963-2](https://doi.org/10.1007/s11661-020-05963-2) Chenyang Zhou, Cuiping Guo, Jingbo Li, Changrong Li, Zhenmin Du, Key Experiments and Thermodynamic Description of the Co-Nb-Ni System, Metall Mater Trans A 51, 5892-5911 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2022.166516](https://doi.org/10.1016/j.jallcom.2022.166516) Dawei Wei, Xiaofeng Bai, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Co–Nb–Ti system, Journal of Alloys and Compounds 924, 166516 (2022).  
_assessment that models this phase_
- [doi:10.1016/j.intermet.2008.02.017](https://doi.org/10.1016/j.intermet.2008.02.017) F. Stein, D. Jiang, M. Palm, G. Sauthoff, D. Grüner, G. Kreiner, Experimental reinvestigation of the Co–Nb phase diagram, Intermetallics 16, 785-792 (2008).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(67)90004-5](https://doi.org/10.1016/0022-5088%2867%2990004-5) J.K. Pargeter, W. Hume-Rothery, The constitution of niobium-cobalt alloys, Journal of the Less Common Metals 12, 366-374 (1967).  
_cited as the source of values for this phase_
- [doi:10.1016/s0925-8388(97)00465-9](https://doi.org/10.1016/s0925-8388%2897%2900465-9) K.C.Hari Kumar, I. Ansara, P. Wollants, L. Delaey, Thermodynamic optimisation of the Co–Nb system, Journal of Alloys and Compounds 267, 105-112 (1998).  
_cited as the source of values for this phase_

## CO16NB9_C14 (Co–Nb)

- Id: `phase:co-nb:co16nb9-c14`; status `needs_review`
- No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_C14; stoichiometry_contradicts_C14:CoNb-98Har-LB.tdb
- Candidate (literature_printed): MgZn2 · hP12 — printed with a label mapped to this phase
- Candidate (name_token): MgZn2 · C14 · hP12 · P6_3/mmc (194) — Strukturbericht/word 'C14' in the TDB name
- Candidate (sgte_mmc2): MgZn2 · C14 · hP12 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for CO16NB9_C14: Co16Nb9
- Candidate (tdb_comment): MgZn2 · hP12 · P6_3/mmc — CoNb-98Har-LB.tdb: 'Prototype MgZn2 (hP12, P6_3/mmc)'
- Stoichiometry: Co 0.6400, Nb 0.3600
- Stability: stable in 1 of 1 calculated diagram(s): 1460–1700.54 K, x(Nb) 0.36–0.36
- Literature: 9 values (9 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:co16nb9-c14)

Names (3): _corpus: _corpus:phase:co-nb:co16nb9-c14  
_paper: _paper:10.1016/s0925-8388(97)00465-9:Co16Nb9  
_tdb: _tdb:CoNb-98Har-LB.tdb:CO16NB9_C14  


### TDB models of CO16NB9_C14 (1): PHASE and CONSTITUENT statements as written

[CoNb-98Har-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-98Har-LB.tdb): CO16NB9_C14, type code %, sha256 `0243c89a99fdd870…`

~~~~text
56: PHASE CO16NB9_C14 % 2 16 9 !
57: CONST CO16NB9_C14 : CO : NB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/S0925-8388(97)00465-9](https://doi.org/10.1016/S0925-8388%2897%2900465-9) K.C. Hari Kumar, I. Ansara, P. Wollants, L. Delaye, J. Alloys Compd., 267, 105-12(1998).  
_assessment that models this phase; reports values for this phase_

## CO3NB_C36 (Co–Nb)

- Id: `phase:co-nb:co3nb-c36`; status `needs_review`
- No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_C36; stoichiometry_contradicts_C36:CoNb-98Har-LB.tdb
- Candidate (dft_mp): P6_3/mmc (194) — on-hull MP NbCo3 at x(NB)=0.2500
- Candidate (dft_oqmd): P63/mmc (194) — on-hull OQMD Co3 Nb1 at x(NB)=0.2500
- Candidate (literature_printed): MgNi2 · hP24 — printed with a label mapped to this phase
- Candidate (name_token): MgNi2 · C36 · hP24 · P6_3/mmc (194) — Strukturbericht/word 'C36' in the TDB name
- Candidate (sgte_mmc2): MgNi2 · C36 · hP24 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for CO3NB_C36: Co3Nb
- Candidate (tdb_comment): MgNi2 · hP24 · P6_3/mmc — CoNb-98Har-LB.tdb: 'Prototype MgNi2 (hP24, P6_3/mmc)'
- Stoichiometry: Co 0.7500, Nb 0.2500
- Stability: stable in 1 of 1 calculated diagram(s): 1277.93–1521.8 K, x(Nb) 0.25–0.25
- Literature: 12 values (12 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:co3nb-c36)

Names (3): _corpus: _corpus:phase:co-nb:co3nb-c36  
_paper: _paper:10.1016/s0925-8388(97)00465-9:Co3Nb  
_tdb: _tdb:CoNb-98Har-LB.tdb:CO3NB_C36  


### TDB models of CO3NB_C36 (1): PHASE and CONSTITUENT statements as written

[CoNb-98Har-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-98Har-LB.tdb): CO3NB_C36, type code %, sha256 `0243c89a99fdd870…`

~~~~text
46: PHASE CO3NB_C36 % 2 3 1 !
47: CONST CO3NB_C36 : CO : NB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/S0925-8388(97)00465-9](https://doi.org/10.1016/S0925-8388%2897%2900465-9) K.C. Hari Kumar, I. Ansara, P. Wollants, L. Delaye, J. Alloys Compd., 267, 105-12(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(67)90004-5](https://doi.org/10.1016/0022-5088%2867%2990004-5) J.K. Pargeter, W. Hume-Rothery, The constitution of niobium-cobalt alloys, Journal of the Less Common Metals 12, 366-374 (1967).  
_cited as the source of values for this phase_
- [doi:10.1149/1.2428700](https://doi.org/10.1149/1.2428700) Max Hansen, Kurt Anderko, H. W. Salzberg, Constitution of Binary Alloys, J. Electrochem. Soc. 105, 260C (1958).  
_cited as the source of values for this phase_

## CO7NB2 (Co–Nb)

- Id: `phase:co-nb:co7nb2`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Co7Nb2) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Co7Nb2) — Hallstedt 2025 mmc2 row for CO7NB2: Co7Nb2
- Candidate (tdb_comment): Ni7Zr2 · mC36 · C2/m — CoNb-15He.tdb: 'Prototype Ni7Zr2 (mC36, C2/m)'
- Candidate (tdb_comment): Ni7Zr2 · mC36 · C2/m — CoNb-20Zho.tdb: 'Prototype Ni7Zr2 (mC36, C2/m)'
- Candidate (tdb_comment): Ni7Zr2 · mC36 · C2/m — CoNb-22Wei.tdb: 'Prototype Ni7Zr2 (mC36, C2/m)'
- Stoichiometry: Co 0.7778, Nb 0.2222
- Stability: stable in 4 of 4 calculated diagram(s): 300–1359.48 K, x(Nb) 0.22222–0.22222
- Literature: 23 values (23 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:co7nb2)

Names (8): _corpus: _corpus:phase:co-nb:co7nb2  
_paper: _paper:10.1007/s11661-020-05963-2:Co7Nb2, paper:10.1016/j.jallcom.2015.02.182:Co7Nb2, paper:10.1016/s0925-8388(97)00465-9:Co7Nb2  
_tdb: _tdb:CoNb-15He.tdb:CO7NB2, tdb:CoNb-20Zho.tdb:CO7NB2, tdb:CoNb-22Wei.tdb:CO7NB2, tdb:CoNb-98Har-LB.tdb:CO7NB2  


### TDB models of CO7NB2 (4): PHASE and CONSTITUENT statements as written

[CoNb-15He.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-15He.tdb): CO7NB2, type code %, sha256 `870ac3d5afa50fc9…`

~~~~text
40: PHASE CO7NB2 % 2 7 2 !
41: CONST CO7NB2 : CO : NB : !
~~~~

[CoNb-20Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-20Zho.tdb): CO7NB2, type code %, sha256 `9a76c67c6bba1992…`

~~~~text
43: PHASE CO7NB2 % 2 7 2 !
44: CONST CO7NB2 : CO : NB : !
~~~~

[CoNb-22Wei.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-22Wei.tdb): CO7NB2, type code %, sha256 `9d02f9031327c346…`

~~~~text
50: PHASE CO7NB2 % 2 7 2 !
51: CONST CO7NB2 : CO : NB : !
~~~~

[CoNb-98Har-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-98Har-LB.tdb): CO7NB2, type code %, sha256 `0243c89a99fdd870…`

~~~~text
41: PHASE CO7NB2 % 2 7 2 !
42: CONST CO7NB2 : CO : NB : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.jallcom.2015.02.182](https://doi.org/10.1016/j.jallcom.2015.02.182) Cuiyun He, Frank Stein, Martin Palm, Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb, Journal of Alloys and Compounds 637, 361-375 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11661-020-05963-2](https://doi.org/10.1007/s11661-020-05963-2) Chenyang Zhou, Cuiping Guo, Jingbo Li, Changrong Li, Zhenmin Du, Key Experiments and Thermodynamic Description of the Co-Nb-Ni System, Metall Mater Trans A 51, 5892-5911 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00465-9](https://doi.org/10.1016/S0925-8388%2897%2900465-9) K.C. Hari Kumar, I. Ansara, P. Wollants, L. Delaye, J. Alloys Compd., 267, 105-12(1998).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2022.166516](https://doi.org/10.1016/j.jallcom.2022.166516) Dawei Wei, Xiaofeng Bai, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Co–Nb–Ti system, Journal of Alloys and Compounds 924, 166516 (2022).  
_assessment that models this phase_
- [doi:10.1016/j.intermet.2008.02.017](https://doi.org/10.1016/j.intermet.2008.02.017) F. Stein, D. Jiang, M. Palm, G. Sauthoff, D. Grüner, G. Kreiner, Experimental reinvestigation of the Co–Nb phase diagram, Intermetallics 16, 785-792 (2008).  
_cited as the source of values for this phase_

## MU_D85 (Co–Nb)

- Id: `phase:co-nb:d85-mu`; status `assigned`
- Structure: Fe7W6 · D8_5 · hR13 · R-3m (166); type `st:d8-5-fe7w6-hr13`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in CoNb-15He.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in CoNb-20Zho.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in CoNb-22Wei.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in CoNb-98Har-LB.tdb also describes the disordered state
- Stability: stable in 4 of 4 calculated diagram(s): 300–1708.54 K, x(Nb) 0.45992–0.56446
- Literature: 48 values (48 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:d85-mu)

Names (9): _corpus: _corpus:phase:co-nb:d85-mu, corpus:phase:co-nb:mu-d85  
_paper: _paper:10.1007/s11661-020-05963-2:CoNb, paper:10.1016/j.jallcom.2015.02.182:Co7Nb6(μ), paper:10.1016/s0925-8388(97)00465-9:μ  
_tdb: _tdb:CoNb-15He.tdb:MU_D85, tdb:CoNb-20Zho.tdb:MU_D85, tdb:CoNb-22Wei.tdb:MU_D85, tdb:CoNb-98Har-LB.tdb:MU_D85  


### TDB models of MU_D85 (4): PHASE and CONSTITUENT statements as written

[CoNb-15He.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-15He.tdb): MU_D85, type code %, sha256 `870ac3d5afa50fc9…`

~~~~text
60: PHASE MU_D85 % 4 1 4 2 6 !
61: CONST MU_D85 : CO : NB : CO NB : CO NB : !
~~~~

[CoNb-20Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-20Zho.tdb): MU_D85, type code %, sha256 `9a76c67c6bba1992…`

~~~~text
63: PHASE MU_D85 % 4 1 4 2 6 !
64: CONST MU_D85 : CO NB : NB : CO NB : CO NB : !
~~~~

[CoNb-22Wei.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-22Wei.tdb): MU_D85, type code %, sha256 `9d02f9031327c346…`

~~~~text
70: PHASE MU_D85 % 4 1 4 2 6 !
71: CONST MU_D85 : CO NB : NB : CO NB : CO NB : !
~~~~

[CoNb-98Har-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-98Har-LB.tdb): MU_D85, type code %, sha256 `0243c89a99fdd870…`

~~~~text
61: PHASE MU_D85 % 4 1 2 6 4 !
62: CONST MU_D85 : CO NB : CO NB : CO : NB : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1016/j.jallcom.2015.02.182](https://doi.org/10.1016/j.jallcom.2015.02.182) Cuiyun He, Frank Stein, Martin Palm, Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb, Journal of Alloys and Compounds 637, 361-375 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00465-9](https://doi.org/10.1016/S0925-8388%2897%2900465-9) K.C. Hari Kumar, I. Ansara, P. Wollants, L. Delaye, J. Alloys Compd., 267, 105-12(1998).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11661-020-05963-2](https://doi.org/10.1007/s11661-020-05963-2) Chenyang Zhou, Cuiping Guo, Jingbo Li, Changrong Li, Zhenmin Du, Key Experiments and Thermodynamic Description of the Co-Nb-Ni System, Metall Mater Trans A 51, 5892-5911 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2022.166516](https://doi.org/10.1016/j.jallcom.2022.166516) Dawei Wei, Xiaofeng Bai, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Co–Nb–Ti system, Journal of Alloys and Compounds 924, 166516 (2022).  
_assessment that models this phase_
- [doi:10.1016/0022-5088(67)90004-5](https://doi.org/10.1016/0022-5088%2867%2990004-5) J.K. Pargeter, W. Hume-Rothery, The constitution of niobium-cobalt alloys, Journal of the Less Common Metals 12, 366-374 (1967).  
_cited as the source of values for this phase_
- [doi:10.1016/j.intermet.2008.02.017](https://doi.org/10.1016/j.intermet.2008.02.017) F. Stein, D. Jiang, M. Palm, G. Sauthoff, D. Grüner, G. Kreiner, Experimental reinvestigation of the Co–Nb phase diagram, Intermetallics 16, 785-792 (2008).  
_cited as the source of values for this phase_

## FCC_A1 (Co–Nb)

- Id: `phase:co-nb: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 4 of 4 calculated diagram(s): 688.19–1768.99 K, x(Nb) 0–0.05372
- Literature: 27 values (27 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:fcc-a1)

Names (8): _corpus: _corpus:phase:co-nb:fcc-a1  
_paper: _paper:10.1007/s11661-020-05963-2:fcc(Co), paper:10.1016/j.jallcom.2015.02.182:(αCo), paper:10.1016/s0925-8388(97)00465-9:fcc  
_tdb: _tdb:CoNb-15He.tdb:FCC_A1, tdb:CoNb-20Zho.tdb:FCC_A1, tdb:CoNb-22Wei.tdb:FCC_A1, tdb:CoNb-98Har-LB.tdb:FCC_A1  


### TDB models of FCC_A1 (4): PHASE and CONSTITUENT statements as written

[CoNb-15He.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-15He.tdb): FCC_A1, type code %A, sha256 `870ac3d5afa50fc9…`

~~~~text
25: PHASE FCC_A1 %A 2 1 1 !
26: CONST FCC_A1 : CO% NB : VA : !
~~~~

[CoNb-20Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-20Zho.tdb): FCC_A1, type code %A, sha256 `9a76c67c6bba1992…`

~~~~text
28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : CO% NB : VA : !
~~~~

[CoNb-22Wei.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-22Wei.tdb): FCC_A1, type code %A, sha256 `9d02f9031327c346…`

~~~~text
35: PHASE FCC_A1 %A 2 1 1 !
36: CONST FCC_A1 : CO% NB : VA : !
~~~~

[CoNb-98Har-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-98Har-LB.tdb): FCC_A1, type code %A, sha256 `0243c89a99fdd870…`

~~~~text
26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : CO% NB : VA : !
~~~~

Example references (7 of 7; assessments first): 

- [doi:10.1016/j.jallcom.2015.02.182](https://doi.org/10.1016/j.jallcom.2015.02.182) Cuiyun He, Frank Stein, Martin Palm, Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb, Journal of Alloys and Compounds 637, 361-375 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00465-9](https://doi.org/10.1016/S0925-8388%2897%2900465-9) K.C. Hari Kumar, I. Ansara, P. Wollants, L. Delaye, J. Alloys Compd., 267, 105-12(1998).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11661-020-05963-2](https://doi.org/10.1007/s11661-020-05963-2) Chenyang Zhou, Cuiping Guo, Jingbo Li, Changrong Li, Zhenmin Du, Key Experiments and Thermodynamic Description of the Co-Nb-Ni System, Metall Mater Trans A 51, 5892-5911 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2022.166516](https://doi.org/10.1016/j.jallcom.2022.166516) Dawei Wei, Xiaofeng Bai, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Co–Nb–Ti system, Journal of Alloys and Compounds 924, 166516 (2022).  
_assessment that models this phase_
- [doi:10.1016/j.intermet.2008.02.017](https://doi.org/10.1016/j.intermet.2008.02.017) F. Stein, D. Jiang, M. Palm, G. Sauthoff, D. Grüner, G. Kreiner, Experimental reinvestigation of the Co–Nb phase diagram, Intermetallics 16, 785-792 (2008).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(67)90004-5](https://doi.org/10.1016/0022-5088%2867%2990004-5) J.K. Pargeter, W. Hume-Rothery, The constitution of niobium-cobalt alloys, Journal of the Less Common Metals 12, 366-374 (1967).  
_cited as the source of values for this phase_
- [doi:10.1149/1.2428700](https://doi.org/10.1149/1.2428700) Max Hansen, Kurt Anderko, H. W. Salzberg, Constitution of Binary Alloys, J. Electrochem. Soc. 105, 260C (1958).  
_cited as the source of values for this phase_

## HCP_A3 (Co–Nb)

- Id: `phase:co-nb: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 4 of 4 calculated diagram(s): 300–819.19 K, x(Nb) 0–7e-05
- Literature: 3 values (3 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:hcp-a3)

Names (7): _corpus: _corpus:phase:co-nb:hcp-a3  
_paper: _paper:10.1016/j.jallcom.2015.02.182:(εCo), paper:10.1016/s0925-8388(97)00465-9:hcp  
_tdb: _tdb:CoNb-15He.tdb:HCP_A3, tdb:CoNb-20Zho.tdb:HCP_A3, tdb:CoNb-22Wei.tdb:HCP_A3, tdb:CoNb-98Har-LB.tdb:HCP_A3  


### TDB models of HCP_A3 (4): PHASE and CONSTITUENT statements as written

[CoNb-15He.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-15He.tdb): HCP_A3, type code %A, sha256 `870ac3d5afa50fc9…`

~~~~text
35: PHASE HCP_A3 %A 2 1 0.5 !
36: CONST HCP_A3 : CO% NB : VA : !
~~~~

[CoNb-20Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-20Zho.tdb): HCP_A3, type code %A, sha256 `9a76c67c6bba1992…`

~~~~text
38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : CO% NB : VA : !
~~~~

[CoNb-22Wei.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-22Wei.tdb): HCP_A3, type code %A, sha256 `9d02f9031327c346…`

~~~~text
45: PHASE HCP_A3 %A 2 1 0.5 !
46: CONST HCP_A3 : CO% NB : VA : !
~~~~

[CoNb-98Har-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-98Har-LB.tdb): HCP_A3, type code %A, sha256 `0243c89a99fdd870…`

~~~~text
36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : CO% NB : VA : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2015.02.182](https://doi.org/10.1016/j.jallcom.2015.02.182) Cuiyun He, Frank Stein, Martin Palm, Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb, Journal of Alloys and Compounds 637, 361-375 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00465-9](https://doi.org/10.1016/S0925-8388%2897%2900465-9) K.C. Hari Kumar, I. Ansara, P. Wollants, L. Delaye, J. Alloys Compd., 267, 105-12(1998).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11661-020-05963-2](https://doi.org/10.1007/s11661-020-05963-2) Chenyang Zhou, Cuiping Guo, Jingbo Li, Changrong Li, Zhenmin Du, Key Experiments and Thermodynamic Description of the Co-Nb-Ni System, Metall Mater Trans A 51, 5892-5911 (2020).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2022.166516](https://doi.org/10.1016/j.jallcom.2022.166516) Dawei Wei, Xiaofeng Bai, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Co–Nb–Ti system, Journal of Alloys and Compounds 924, 166516 (2022).  
_assessment that models this phase_

## LIQUID (Co–Nb)

- Id: `phase:co-nb:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 4 of 4 calculated diagram(s): 1503.83–4000 K, x(Nb) 0–1
- Literature: 90 values (90 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:co-nb:liquid)

Names (10): _corpus: _corpus:phase:co-nb:liquid  
_paper: _paper:10.1007/s11661-020-05963-2:Liq., paper:10.1007/s11661-020-05963-2:liq., paper:10.1016/j.jallcom.2015.02.182:L, paper:10.1016/j.jallcom.2015.02.182:Liq, paper:10.1016/s0925-8388(97)00465-9:L  
_tdb: _tdb:CoNb-15He.tdb:LIQUID, tdb:CoNb-20Zho.tdb:LIQUID, tdb:CoNb-22Wei.tdb:LIQUID, tdb:CoNb-98Har-LB.tdb:LIQUID  


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

[CoNb-15He.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-15He.tdb): LIQUID, type code %, sha256 `870ac3d5afa50fc9…`

~~~~text
20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : CO NB : !
~~~~

[CoNb-20Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-20Zho.tdb): LIQUID, type code %, sha256 `9a76c67c6bba1992…`

~~~~text
23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : CO NB : !
~~~~

[CoNb-22Wei.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-22Wei.tdb): LIQUID, type code %, sha256 `9d02f9031327c346…`

~~~~text
30: PHASE LIQUID:L % 1 1 !
31: CONST LIQUID:L : CO NB : !
~~~~

[CoNb-98Har-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CoNb-98Har-LB.tdb): LIQUID, type code %, sha256 `0243c89a99fdd870…`

~~~~text
21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : CO NB : !
~~~~

Example references (8 of 8; assessments first): 

- [doi:10.1016/j.jallcom.2015.02.182](https://doi.org/10.1016/j.jallcom.2015.02.182) Cuiyun He, Frank Stein, Martin Palm, Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb, Journal of Alloys and Compounds 637, 361-375 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00465-9](https://doi.org/10.1016/S0925-8388%2897%2900465-9) K.C. Hari Kumar, I. Ansara, P. Wollants, L. Delaye, J. Alloys Compd., 267, 105-12(1998).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11661-020-05963-2](https://doi.org/10.1007/s11661-020-05963-2) Chenyang Zhou, Cuiping Guo, Jingbo Li, Changrong Li, Zhenmin Du, Key Experiments and Thermodynamic Description of the Co-Nb-Ni System, Metall Mater Trans A 51, 5892-5911 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2022.166516](https://doi.org/10.1016/j.jallcom.2022.166516) Dawei Wei, Xiaofeng Bai, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Co–Nb–Ti system, Journal of Alloys and Compounds 924, 166516 (2022).  
_assessment that models this phase_
- [doi:10.1016/0022-5088(67)90004-5](https://doi.org/10.1016/0022-5088%2867%2990004-5) J.K. Pargeter, W. Hume-Rothery, The constitution of niobium-cobalt alloys, Journal of the Less Common Metals 12, 366-374 (1967).  
_cited as the source of values for this phase_
- [doi:10.1016/j.intermet.2008.02.017](https://doi.org/10.1016/j.intermet.2008.02.017) F. Stein, D. Jiang, M. Palm, G. Sauthoff, D. Grüner, G. Kreiner, Experimental reinvestigation of the Co–Nb phase diagram, Intermetallics 16, 785-792 (2008).  
_cited as the source of values for this phase_
- [doi:10.1149/1.2428700](https://doi.org/10.1149/1.2428700) Max Hansen, Kurt Anderko, H. W. Salzberg, Constitution of Binary Alloys, J. Electrochem. Soc. 105, 260C (1958).  
_cited as the source of values for this phase_
- [doi:10.1515/ijmr-1938-300917](https://doi.org/10.1515/ijmr-1938-300917) W. ¨ Koster, W. Mulfinger, Z. Metallkde. 30 (1938) 348.  
_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). https://doi.org/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). https://doi.org/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.

```bibtex
@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}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).
