# Ni–Zn phases

> Ni–Zn system: 12 phases (tier A 9, tier C 1, liquid 1, needs_review 1); 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/NI-ZN.html · Markdown: https://data.orchid-project.org/phases/pages/NI-ZN.md

12 phases (tier A 9, tier C 1, liquid 1, needs_review 1); 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=NI-ZN) · [full JSON](https://data.orchid-project.org/phases/systems/NI-ZN.json) · [Ni–Zn system page](https://data.orchid-project.org/systems/NI-ZN.html) · [Markdown](https://data.orchid-project.org/phases/pages/NI-ZN.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Ni–Zn system (12)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-ni-zn-bcc-a2); _phase:ni-zn:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 4 calculated diagram(s) | 10 | 5 |
| [B2_BCC](#phase-ni-zn-bcc-b2); _phase:ni-zn:bcc-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 925.16–1306.86 K, x(Zn) 0.46454–0.57489 | 0 | 1 |
| [FCC_A1](#phase-ni-zn-fcc-a1); _phase:ni-zn:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 4 of 4 calculated diagram(s): 300–1753.24 K, x(Zn) 0–0.39715 | 20 | 4 |
| [HCP_A3](#phase-ni-zn-hcp-a3); _phase:ni-zn:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 4 of 4 calculated diagram(s): 300–2499.86 K, x(Zn) 0.99968–1 | 13 | 4 |
| [LIQUID](#phase-ni-zn-liquid); _phase:ni-zn:liquid_ | liquid | liquid | stable in 4 of 4 calculated diagram(s): 686.33–2500 K, x(Zn) 0–1 | 61 | 4 |
| [NI2ZN11_D82](#phase-ni-zn-ni2zn11-d82); _phase:ni-zn:ni2zn11-d82_ | Cu5Zn8 · D8_2 · cI52 · I-43m (217) | tier A: standard phase name | stable in 4 of 4 calculated diagram(s): 300–1159.57 K, x(Zn) 0.7146–0.86953 | 38 | 4 |
| [NI2ZN15](#phase-ni-zn-ni2zn15); _phase:ni-zn:ni2zn15_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–762.99 K, x(Zn) 0.88235–0.88235 | 0 | 1 |
| [NIZN_B11](#phase-ni-zn-nizn-b11); _phase:ni-zn:nizn-b11_ | CuTi-gamma · B11 · tP4 · P4/nmm (129) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1082.02 K, x(Zn) 0.43998–0.5218 | 4 | 1 |
| [NIZN_B2](#phase-ni-zn-nizn-b2); _phase:ni-zn:nizn-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 928.25–1313.13 K, x(Zn) 0.47195–0.564 | 46 | 3 |
| [NIZN_L10](#phase-ni-zn-nizn-l10); _phase:ni-zn:nizn-l10_ | AuCu · L1_0 · tP4 · P4/mmm (123) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1083.86 K, x(Zn) 0.44403–0.52229 | 28 | 2 |
| [NIZN_L2A](#phase-ni-zn-nizn-l2a); _phase:ni-zn:nizn-l2a_ | CuTi-delta · L2_a · tP2 · P4/mmm (123) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1087.66 K, x(Zn) 0.43389–0.51197 | 0 | 1 |
| [NIZN8](#phase-ni-zn-nizn8); _phase:ni-zn:nizn8_ | Ni3Zn22 · mC50 · C2/m (12) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–765.22 K, x(Zn) 0.88889–0.88889 | 20 | 3 |

## BCC_A2 (Ni–Zn)

- Id: `phase:ni-zn:bcc-a2`; status `assigned`
- Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high
- Stability: not stable in 4 calculated diagram(s)
- Literature: 10 values (10 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:bcc-a2)

Names (7): _corpus: _corpus:phase:ni-zn:bcc-a2  
_paper: _paper:10.1016/j.calphad.2003.09.002:bcc  
_tdb: _tdb:NiZn-02Su.tdb:BCC_A2, tdb:NiZn-03Mie.tdb:BCC_A2, tdb:NiZn-05Jia.tdb:BCC_A2, tdb:NiZn-11Xio.tdb:A2_BCC, tdb:NiZn-11Xio.tdb:BCC_A2  


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

[NiZn-02Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-02Su.tdb): BCC_A2, type code %B, sha256 `84e7fe0c247c1dbf…`

~~~~text
33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : NI ZN : VA : !
~~~~

[NiZn-03Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-03Mie.tdb): BCC_A2, type code %B, sha256 `f5ded67a69a5e8da…`

~~~~text
36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : NI ZN : VA : !
~~~~

[NiZn-05Jia.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-05Jia.tdb): BCC_A2, type code %B, sha256 `fd25dd894a672e98…`

~~~~text
36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : NI ZN : VA : !
~~~~

[NiZn-11Xio.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-11Xio.tdb): A2_BCC, type code %B, sha256 `a4a348f34af1eb96…`

~~~~text
42: PHASE A2_BCC %B 2 1 3 !
43: CONST A2_BCC : NI ZN VA : VA : !
~~~~

[NiZn-11Xio.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-11Xio.tdb): BCC_A2, type code %B, sha256 `a4a348f34af1eb96…`

~~~~text
37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : NI ZN : VA : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.calphad.2003.09.002](https://doi.org/10.1016/j.calphad.2003.09.002) Jyrki Miettinen, Thermodynamic description of the Cu–Ni–Zn system above 600∘C, Calphad 27, 263-274 (2003).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1361/1054971023604125](https://doi.org/10.1361/1054971023604125) Xuping Su, Nai-Yong Tang, Jim M. Toguri, Thermodynamic assessment of the Ni-Zn system, JPE 23, 140-148 (2002).  
_assessment that models this phase; cited as the source of values for this phase_
- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_assessment that models this phase_
- [doi:10.1016/j.jpcs.2004.08.039](https://doi.org/10.1016/j.jpcs.2004.08.039) M. Jiang, C.P. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, G.P. Vassilev, K. Ishida, J. Phys. Chem. Solids, 66, 246-50(2005).  
_assessment that models this phase_
- [doi:10.1361/105497100770340075](https://doi.org/10.1361/105497100770340075) George Penev Vassilev, Tomas Gomez-Acebo, Jean-Claude Tedenac, Thermodynamic optimization of the Ni-Zn system, JPE 21, 287-301 (2000).  
_cited as the source of values for this phase_

## B2_BCC (Ni–Zn)

- Id: `phase:ni-zn:bcc-b2`; status `assigned`
- Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high
- Caveat: NiZn-11Xio.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
- Caveat: partitioned order/disorder model in NiZn-11Xio.tdb also describes the disordered state
- Stability: stable in 1 of 1 calculated diagram(s): 925.16–1306.86 K, x(Zn) 0.46454–0.57489
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:bcc-b2)

Names (3): _corpus: _corpus:phase:ni-zn:bcc-b2  
_system_alias: _system_alias:ni-zn:beta  
_tdb: _tdb:NiZn-11Xio.tdb:B2_BCC  


### TDB models of B2_BCC (1): PHASE and CONSTITUENT statements as written

[NiZn-11Xio.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-11Xio.tdb): B2_BCC, type code %BO, sha256 `a4a348f34af1eb96…`

~~~~text
47: PHASE B2_BCC %BO 3 0.5 0.5 3 !
48: CONST B2_BCC : NI% ZN VA : NI ZN% VA : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_assessment that models this phase_

## FCC_A1 (Ni–Zn)

- Id: `phase:ni-zn: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): 300–1753.24 K, x(Zn) 0–0.39715
- Literature: 20 values (20 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:fcc-a1)

Names (8): _corpus: _corpus:phase:ni-zn:fcc-a1  
_paper: _paper:10.1016/j.calphad.2003.09.002:fcc, paper:10.1016/j.calphad.2011.03.003:(Ni), paper:10.1361/1054971023604125:(Ni)  
_tdb: _tdb:NiZn-02Su.tdb:FCC_A1, tdb:NiZn-03Mie.tdb:FCC_A1, tdb:NiZn-05Jia.tdb:FCC_A1, tdb:NiZn-11Xio.tdb:FCC_A1  


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

[NiZn-02Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-02Su.tdb): FCC_A1, type code %A, sha256 `84e7fe0c247c1dbf…`

~~~~text
28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : NI% ZN : VA : !
~~~~

[NiZn-03Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-03Mie.tdb): FCC_A1, type code %A, sha256 `f5ded67a69a5e8da…`

~~~~text
31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : NI% ZN : VA : !
~~~~

[NiZn-05Jia.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-05Jia.tdb): FCC_A1, type code %A, sha256 `fd25dd894a672e98…`

~~~~text
31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : NI% ZN : VA : !
~~~~

[NiZn-11Xio.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-11Xio.tdb): FCC_A1, type code %A, sha256 `a4a348f34af1eb96…`

~~~~text
32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : NI% ZN : VA : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1361/1054971023604125](https://doi.org/10.1361/1054971023604125) Xuping Su, Nai-Yong Tang, Jim M. Toguri, Thermodynamic assessment of the Ni-Zn system, JPE 23, 140-148 (2002).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2003.09.002](https://doi.org/10.1016/j.calphad.2003.09.002) Jyrki Miettinen, Thermodynamic description of the Cu–Ni–Zn system above 600∘C, Calphad 27, 263-274 (2003).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jpcs.2004.08.039](https://doi.org/10.1016/j.jpcs.2004.08.039) M. Jiang, C.P. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, G.P. Vassilev, K. Ishida, J. Phys. Chem. Solids, 66, 246-50(2005).  
_assessment that models this phase_
- [doi:10.1007/978-3-642-47516-0](https://doi.org/10.1007/978-3-642-47516-0) M. Hansen, Der Aufbau der Zweistofflegierungen, (1936).  
_cited as the source of values for this phase_
- [doi:10.1361/105497100770340075](https://doi.org/10.1361/105497100770340075) George Penev Vassilev, Tomas Gomez-Acebo, Jean-Claude Tedenac, Thermodynamic optimization of the Ni-Zn system, JPE 21, 287-301 (2000).  
_cited as the source of values for this phase_

## HCP_A3 (Ni–Zn)

- Id: `phase:ni-zn: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): 300–2499.86 K, x(Zn) 0.99968–1
- Literature: 13 values (13 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:hcp-a3)

Names (8): _corpus: _corpus:phase:ni-zn:hcp-a3  
_paper: _paper:10.1016/j.calphad.2003.09.002:hcp(Zn), paper:10.1016/j.calphad.2011.03.003:(Zn), paper:10.1361/1054971023604125:Zn(hcp)  
_tdb: _tdb:NiZn-02Su.tdb:HCP_A3, tdb:NiZn-03Mie.tdb:HCP_A3, tdb:NiZn-05Jia.tdb:HCP_A3, tdb:NiZn-11Xio.tdb:HCP_A3  


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

[NiZn-02Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-02Su.tdb): HCP_A3, type code %A, sha256 `84e7fe0c247c1dbf…`

~~~~text
38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : NI ZN% : VA : !
~~~~

[NiZn-03Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-03Mie.tdb): HCP_A3, type code %A, sha256 `f5ded67a69a5e8da…`

~~~~text
41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : NI ZN% : VA : !
~~~~

[NiZn-05Jia.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-05Jia.tdb): HCP_A3, type code %A, sha256 `fd25dd894a672e98…`

~~~~text
41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : NI ZN% : VA : !
~~~~

[NiZn-11Xio.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-11Xio.tdb): HCP_A3, type code %A, sha256 `a4a348f34af1eb96…`

~~~~text
52: PHASE HCP_A3 %A 2 1 0.5 !
53: CONST HCP_A3 : NI ZN% : VA : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1016/j.calphad.2003.09.002](https://doi.org/10.1016/j.calphad.2003.09.002) Jyrki Miettinen, Thermodynamic description of the Cu–Ni–Zn system above 600∘C, Calphad 27, 263-274 (2003).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1361/1054971023604125](https://doi.org/10.1361/1054971023604125) Xuping Su, Nai-Yong Tang, Jim M. Toguri, Thermodynamic assessment of the Ni-Zn system, JPE 23, 140-148 (2002).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.jpcs.2004.08.039](https://doi.org/10.1016/j.jpcs.2004.08.039) M. Jiang, C.P. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, G.P. Vassilev, K. Ishida, J. Phys. Chem. Solids, 66, 246-50(2005).  
_assessment that models this phase_
- [doi:10.1007/978-3-642-47516-0](https://doi.org/10.1007/978-3-642-47516-0) M. Hansen, Der Aufbau der Zweistofflegierungen, (1936).  
_cited as the source of values for this phase_
- [doi:10.1361/105497100770340075](https://doi.org/10.1361/105497100770340075) George Penev Vassilev, Tomas Gomez-Acebo, Jean-Claude Tedenac, Thermodynamic optimization of the Ni-Zn system, JPE 21, 287-301 (2000).  
_cited as the source of values for this phase_

## LIQUID (Ni–Zn)

- Id: `phase:ni-zn:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 4 of 4 calculated diagram(s): 686.33–2500 K, x(Zn) 0–1
- Literature: 61 values (61 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:liquid)

Names (8): _corpus: _corpus:phase:ni-zn:liquid  
_paper: _paper:10.1016/j.calphad.2003.09.002:Liq, paper:10.1016/j.calphad.2011.03.003:L, paper:10.1361/1054971023604125:L  
_tdb: _tdb:NiZn-02Su.tdb:LIQUID, tdb:NiZn-03Mie.tdb:LIQUID, tdb:NiZn-05Jia.tdb:LIQUID, tdb:NiZn-11Xio.tdb:LIQUID  


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

[NiZn-02Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-02Su.tdb): LIQUID, type code %, sha256 `84e7fe0c247c1dbf…`

~~~~text
23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : NI ZN : !
~~~~

[NiZn-03Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-03Mie.tdb): LIQUID, type code %, sha256 `f5ded67a69a5e8da…`

~~~~text
26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : NI ZN : !
~~~~

[NiZn-05Jia.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-05Jia.tdb): LIQUID, type code %, sha256 `fd25dd894a672e98…`

~~~~text
26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : NI ZN : !
~~~~

[NiZn-11Xio.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-11Xio.tdb): LIQUID, type code %, sha256 `a4a348f34af1eb96…`

~~~~text
27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : NI ZN : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1016/j.calphad.2003.09.002](https://doi.org/10.1016/j.calphad.2003.09.002) Jyrki Miettinen, Thermodynamic description of the Cu–Ni–Zn system above 600∘C, Calphad 27, 263-274 (2003).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1361/1054971023604125](https://doi.org/10.1361/1054971023604125) Xuping Su, Nai-Yong Tang, Jim M. Toguri, Thermodynamic assessment of the Ni-Zn system, JPE 23, 140-148 (2002).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jpcs.2004.08.039](https://doi.org/10.1016/j.jpcs.2004.08.039) M. Jiang, C.P. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, G.P. Vassilev, K. Ishida, J. Phys. Chem. Solids, 66, 246-50(2005).  
_assessment that models this phase_
- [doi:10.1361/105497100770340075](https://doi.org/10.1361/105497100770340075) George Penev Vassilev, Tomas Gomez-Acebo, Jean-Claude Tedenac, Thermodynamic optimization of the Ni-Zn system, JPE 21, 287-301 (2000).  
_cited as the source of values for this phase_
- [doi:10.1007/978-3-642-47516-0](https://doi.org/10.1007/978-3-642-47516-0) M. Hansen, Der Aufbau der Zweistofflegierungen, (1936).  
_cited as the source of values for this phase_

## NI2ZN11_D82 (Ni–Zn)

- Id: `phase:ni-zn:ni2zn11-d82`; status `assigned`
- Structure: Cu5Zn8 · D8_2 · cI52 · I-43m (217); type `st:d8-2-cu5zn8-ci52`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in NiZn-11Xio.tdb also describes the disordered state
- Stability: stable in 4 of 4 calculated diagram(s): 300–1159.57 K, x(Zn) 0.7146–0.86953
- Literature: 38 values (38 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:ni2zn11-d82)

Names (8): _corpus: _corpus:phase:ni-zn:ni2zn11-d82  
_paper: _paper:10.1016/j.calphad.2003.09.002:γ, paper:10.1016/j.calphad.2011.03.003:Γ, paper:10.1361/1054971023604125:γ  
_tdb: _tdb:NiZn-02Su.tdb:NI2ZN11_D82, tdb:NiZn-03Mie.tdb:NI2ZN11_D82, tdb:NiZn-05Jia.tdb:NI2ZN11_D82, tdb:NiZn-11Xio.tdb:NI2ZN11_D82  


### TDB models of NI2ZN11_D82 (4): PHASE and CONSTITUENT statements as written

[NiZn-02Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-02Su.tdb): NI2ZN11_D82, type code %, sha256 `84e7fe0c247c1dbf…`

~~~~text
53: PHASE NI2ZN11_D82 % 3 4 4 18 !
54: CONST NI2ZN11_D82 : NI ZN : NI : ZN : !
~~~~

[NiZn-03Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-03Mie.tdb): NI2ZN11_D82, type code %, sha256 `f5ded67a69a5e8da…`

~~~~text
56: PHASE NI2ZN11_D82 % 1 1 !
57: CONST NI2ZN11_D82 : NI ZN : !
~~~~

[NiZn-05Jia.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-05Jia.tdb): NI2ZN11_D82, type code %, sha256 `fd25dd894a672e98…`

~~~~text
56: PHASE NI2ZN11_D82 % 1 1 !
57: CONST NI2ZN11_D82 : NI ZN : !
~~~~

[NiZn-11Xio.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-11Xio.tdb): NI2ZN11_D82, type code %, sha256 `a4a348f34af1eb96…`

~~~~text
62: PHASE NI2ZN11_D82 % 3 4 1 8 !
63: CONST NI2ZN11_D82 : NI ZN : NI ZN : ZN : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1361/1054971023604125](https://doi.org/10.1361/1054971023604125) Xuping Su, Nai-Yong Tang, Jim M. Toguri, Thermodynamic assessment of the Ni-Zn system, JPE 23, 140-148 (2002).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2003.09.002](https://doi.org/10.1016/j.calphad.2003.09.002) Jyrki Miettinen, Thermodynamic description of the Cu–Ni–Zn system above 600∘C, Calphad 27, 263-274 (2003).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jpcs.2004.08.039](https://doi.org/10.1016/j.jpcs.2004.08.039) M. Jiang, C.P. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, G.P. Vassilev, K. Ishida, J. Phys. Chem. Solids, 66, 246-50(2005).  
_assessment that models this phase_
- [doi:10.1361/105497100770340075](https://doi.org/10.1361/105497100770340075) George Penev Vassilev, Tomas Gomez-Acebo, Jean-Claude Tedenac, Thermodynamic optimization of the Ni-Zn system, JPE 21, 287-301 (2000).  
_cited as the source of values for this phase_
- [doi:10.1007/978-3-642-47516-0](https://doi.org/10.1007/978-3-642-47516-0) M. Hansen, Der Aufbau der Zweistofflegierungen, (1936).  
_cited as the source of values for this phase_

## NI2ZN15 (Ni–Zn)

- Id: `phase:ni-zn:ni2zn15`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
- Candidate (tdb_comment): Ni3Zn22 · mC50 · C2/m — NiZn-02Su.tdb: 'Prototype Ni3Zn22 (mC50, C2/m)'
- Stoichiometry: Ni 0.1176, Zn 0.8824
- Stability: stable in 1 of 1 calculated diagram(s): 300–762.99 K, x(Zn) 0.88235–0.88235
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:ni2zn15)

Names (2): _corpus: _corpus:phase:ni-zn:ni2zn15  
_tdb: _tdb:NiZn-02Su.tdb:NI2ZN15  


### TDB models of NI2ZN15 (1): PHASE and CONSTITUENT statements as written

[NiZn-02Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-02Su.tdb): NI2ZN15, type code %, sha256 `84e7fe0c247c1dbf…`

~~~~text
58: PHASE NI2ZN15 % 2 2 15 !
59: CONST NI2ZN15 : NI : ZN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1361/1054971023604125](https://doi.org/10.1361/1054971023604125) Xuping Su, Nai-Yong Tang, Jim M. Toguri, Thermodynamic assessment of the Ni-Zn system, JPE 23, 140-148 (2002).  
_assessment that models this phase_

## NIZN_B11 (Ni–Zn)

- Id: `phase:ni-zn:nizn-b11`; status `assigned`
- Structure: CuTi-gamma · B11 · tP4 · P4/nmm (129); type `st:b11-cuti-gamma-tp4`; tier A: standard phase name; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 300–1082.02 K, x(Zn) 0.43998–0.5218
- Literature: 4 values (4 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:nizn-b11)

Names (5): _corpus: _corpus:phase:ni-zn:nizn-b11  
_paper: _paper:10.1016/j.calphad.2003.09.002:β1, paper:10.1016/j.calphad.2011.03.003:β1  
_system_alias: _system_alias:ni-zn:beta1  
_tdb: _tdb:NiZn-03Mie.tdb:NIZN_B11  


### TDB models of NIZN_B11 (1): PHASE and CONSTITUENT statements as written

[NiZn-03Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-03Mie.tdb): NIZN_B11, type code %, sha256 `f5ded67a69a5e8da…`

~~~~text
51: PHASE NIZN_B11 % 1 1 !
52: CONST NIZN_B11 : NI ZN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2003.09.002](https://doi.org/10.1016/j.calphad.2003.09.002) Jyrki Miettinen, Thermodynamic description of the Cu–Ni–Zn system above 600∘C, Calphad 27, 263-274 (2003).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_reports values for this phase_

## NIZN_B2 (Ni–Zn)

- Id: `phase:ni-zn:nizn-b2`; status `assigned`
- Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in NiZn-02Su.tdb also describes the disordered state
- Stability: stable in 3 of 3 calculated diagram(s): 928.25–1313.13 K, x(Zn) 0.47195–0.564
- Literature: 46 values (46 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:nizn-b2)

Names (8): _corpus: _corpus:phase:ni-zn:nizn-b2  
_paper: _paper:10.1016/j.calphad.2011.03.003:β, paper:10.1361/1054971023604125:beta, paper:10.1361/1054971023604125:β  
_system_alias: _system_alias:ni-zn:beta  
_tdb: _tdb:NiZn-02Su.tdb:NIZN_B2, tdb:NiZn-03Mie.tdb:NIZN_B2, tdb:NiZn-05Jia.tdb:NIZN_B2  


### TDB models of NIZN_B2 (3): PHASE and CONSTITUENT statements as written

[NiZn-02Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-02Su.tdb): NIZN_B2, type code %, sha256 `84e7fe0c247c1dbf…`

~~~~text
43: PHASE NIZN_B2 % 2 1 1 !
44: CONST NIZN_B2 : NI% ZN : NI ZN% : !
~~~~

[NiZn-03Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-03Mie.tdb): NIZN_B2, type code %, sha256 `f5ded67a69a5e8da…`

~~~~text
46: PHASE NIZN_B2 % 1 1 !
47: CONST NIZN_B2 : NI ZN : !
~~~~

[NiZn-05Jia.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-05Jia.tdb): NIZN_B2, type code %, sha256 `fd25dd894a672e98…`

~~~~text
46: PHASE NIZN_B2 % 2 1 1 !
47: CONST NIZN_B2 : NI% ZN : VA ZN% : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1361/1054971023604125](https://doi.org/10.1361/1054971023604125) Xuping Su, Nai-Yong Tang, Jim M. Toguri, Thermodynamic assessment of the Ni-Zn system, JPE 23, 140-148 (2002).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2003.09.002](https://doi.org/10.1016/j.calphad.2003.09.002) Jyrki Miettinen, Thermodynamic description of the Cu–Ni–Zn system above 600∘C, Calphad 27, 263-274 (2003).  
_assessment that models this phase; cited as the source of values for this phase_
- [doi:10.1016/j.jpcs.2004.08.039](https://doi.org/10.1016/j.jpcs.2004.08.039) M. Jiang, C.P. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, G.P. Vassilev, K. Ishida, J. Phys. Chem. Solids, 66, 246-50(2005).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_reports values for this phase_
- [doi:10.1007/978-3-642-47516-0](https://doi.org/10.1007/978-3-642-47516-0) M. Hansen, Der Aufbau der Zweistofflegierungen, (1936).  
_cited as the source of values for this phase_

## NIZN_L10 (Ni–Zn)

- Id: `phase:ni-zn:nizn-l10`; status `assigned`
- Structure: AuCu · L1_0 · tP4 · P4/mmm (123); type `st:l1-0-aucu-tp4`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in NiZn-02Su.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in NiZn-05Jia.tdb also describes the disordered state
- Stability: stable in 2 of 2 calculated diagram(s): 300–1083.86 K, x(Zn) 0.44403–0.52229
- Literature: 28 values (28 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:nizn-l10)

Names (8): _corpus: _corpus:phase:ni-zn:nizn-l10  
_paper: _paper:10.1016/j.calphad.2003.09.002:β1, paper:10.1016/j.calphad.2011.03.003:β1, paper:10.1361/1054971023604125:beta1, paper:10.1361/1054971023604125:β1  
_system_alias: _system_alias:ni-zn:beta1  
_tdb: _tdb:NiZn-02Su.tdb:NIZN_L10, tdb:NiZn-05Jia.tdb:NIZN_L10  


### TDB models of NIZN_L10 (2): PHASE and CONSTITUENT statements as written

[NiZn-02Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-02Su.tdb): NIZN_L10, type code %, sha256 `84e7fe0c247c1dbf…`

~~~~text
48: PHASE NIZN_L10 % 2 1 1 !
49: CONST NIZN_L10 : NI% ZN : NI ZN% : !
~~~~

[NiZn-05Jia.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-05Jia.tdb): NIZN_L10, type code %, sha256 `fd25dd894a672e98…`

~~~~text
51: PHASE NIZN_L10 % 2 1 1 !
52: CONST NIZN_L10 : NI% ZN : NI ZN% : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1361/1054971023604125](https://doi.org/10.1361/1054971023604125) Xuping Su, Nai-Yong Tang, Jim M. Toguri, Thermodynamic assessment of the Ni-Zn system, JPE 23, 140-148 (2002).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.jpcs.2004.08.039](https://doi.org/10.1016/j.jpcs.2004.08.039) M. Jiang, C.P. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, G.P. Vassilev, K. Ishida, J. Phys. Chem. Solids, 66, 246-50(2005).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2003.09.002](https://doi.org/10.1016/j.calphad.2003.09.002) Jyrki Miettinen, Thermodynamic description of the Cu–Ni–Zn system above 600∘C, Calphad 27, 263-274 (2003).  
_reports values for this phase_
- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_reports values for this phase_
- [doi:10.1361/105497100770340075](https://doi.org/10.1361/105497100770340075) George Penev Vassilev, Tomas Gomez-Acebo, Jean-Claude Tedenac, Thermodynamic optimization of the Ni-Zn system, JPE 21, 287-301 (2000).  
_cited as the source of values for this phase_
- [doi:10.1007/978-3-642-47516-0](https://doi.org/10.1007/978-3-642-47516-0) M. Hansen, Der Aufbau der Zweistofflegierungen, (1936).  
_cited as the source of values for this phase_

## NIZN_L2A (Ni–Zn)

- Id: `phase:ni-zn:nizn-l2a`; status `assigned`
- Structure: CuTi-delta · L2_a · tP2 · P4/mmm (123); type `st:l2-a-cuti-delta-tp2`; tier A: standard phase name; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 300–1087.66 K, x(Zn) 0.43389–0.51197
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:nizn-l2a)

Names (3): _corpus: _corpus:phase:ni-zn:nizn-l2a  
_system_alias: _system_alias:ni-zn:beta1  
_tdb: _tdb:NiZn-11Xio.tdb:NIZN_L2A  


### TDB models of NIZN_L2A (1): PHASE and CONSTITUENT statements as written

[NiZn-11Xio.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-11Xio.tdb): NIZN_L2A, type code %, sha256 `a4a348f34af1eb96…`

~~~~text
57: PHASE NIZN_L2A % 2 1 1 !
58: CONST NIZN_L2A : NI% ZN : NI ZN% : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_assessment that models this phase_

## NIZN8 (Ni–Zn)

- Id: `phase:ni-zn:nizn8`; status `assigned`
- Structure: Ni3Zn22 · mC50 · C2/m (12); type `st:ni3zn22-mc50`; 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](https://doi.org/10.1016/j.calphad.2025.102833)
- Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Ni 0.1111, Zn 0.8889
- Stability: stable in 3 of 3 calculated diagram(s): 300–765.22 K, x(Zn) 0.88889–0.88889
- Literature: 20 values (20 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-zn:nizn8)

Names (6): _corpus: _corpus:phase:ni-zn:nizn8  
_paper: _paper:10.1016/j.calphad.2003.09.002:δ, paper:10.1016/j.calphad.2011.03.003:δ  
_tdb: _tdb:NiZn-03Mie.tdb:NIZN8, tdb:NiZn-05Jia.tdb:NIZN8, tdb:NiZn-11Xio.tdb:NIZN8  


### TDB models of NIZN8 (3): PHASE and CONSTITUENT statements as written

[NiZn-03Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-03Mie.tdb): NIZN8, type code %, sha256 `f5ded67a69a5e8da…`

~~~~text
61: PHASE NIZN8 % 2 1 8 !
62: CONST NIZN8 : NI : ZN : !
~~~~

[NiZn-05Jia.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-05Jia.tdb): NIZN8, type code %, sha256 `fd25dd894a672e98…`

~~~~text
61: PHASE NIZN8 % 2 1 8 !
62: CONST NIZN8 : NI : ZN : !
~~~~

[NiZn-11Xio.tdb](https://orchid-project.org/data/databases/sgte-binary/NiZn-11Xio.tdb): NIZN8, type code %, sha256 `a4a348f34af1eb96…`

~~~~text
67: PHASE NIZN8 % 2 1 8 !
68: CONST NIZN8 : NI : ZN : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.calphad.2003.09.002](https://doi.org/10.1016/j.calphad.2003.09.002) Jyrki Miettinen, Thermodynamic description of the Cu–Ni–Zn system above 600∘C, Calphad 27, 263-274 (2003).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.03.003](https://doi.org/10.1016/j.calphad.2011.03.003) Wei Xiong, Honghui Xu, Yong Du, Thermodynamic investigation of the galvanizing systems, II: Thermodynamic evaluation of the Ni–Zn system, Calphad 35, 276-283 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jpcs.2004.08.039](https://doi.org/10.1016/j.jpcs.2004.08.039) M. Jiang, C.P. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, G.P. Vassilev, K. Ishida, J. Phys. Chem. Solids, 66, 246-50(2005).  
_assessment that models this phase_
- [doi:10.1361/1054971023604125](https://doi.org/10.1361/1054971023604125) Xuping Su, Nai-Yong Tang, Jim M. Toguri, Thermodynamic assessment of the Ni-Zn system, JPE 23, 140-148 (2002).  
_cited as the source of values for this phase_
- [doi:10.1361/105497100770340075](https://doi.org/10.1361/105497100770340075) George Penev Vassilev, Tomas Gomez-Acebo, Jean-Claude Tedenac, Thermodynamic optimization of the Ni-Zn system, JPE 21, 287-301 (2000).  
_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).
