# Bi–Zn system

> Bi–Zn system: 23 accepted literature values (invariant reaction 13, phase transition 10) and 5 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/BI-ZN.html · Markdown: https://data.orchid-project.org/systems/BI-ZN.md

23 accepted literature values from 2 paper(s) (experimental 8, model 10, unspecified 5); 5 calculated phase diagram(s). 9 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: [JSON](https://data.orchid-project.org/literature/systems/BI-ZN.json) · [CSV](https://data.orchid-project.org/systems/BI-ZN.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#BI-ZN) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#BI-ZN/BiZn-00Mal-LB.json) · [phases (5)](https://data.orchid-project.org/phases/pages/BI-ZN.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/BI-ZN.html) · [Markdown](https://data.orchid-project.org/systems/BI-ZN.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 8 |
| model | 10 |
| unspecified | 5 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 13 |
| phase transition | 10 |

## Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Table: Assessments with a calculated phase diagram

| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| BiZn-00Mal-LB.tdb | D.V. Malakhov, Calphad, 24, 1-14(2000). [doi:10.1016/S0364-5916(00)00011-0](https://doi.org/10.1016/S0364-5916%2800%2900011-0) | `dc7817b37fd0170061653e5ba718a97547c6a4035adadceda5aba2ba833bd99a` | [viewer](https://orchid-project.org/phase-diagrams/#BI-ZN/BiZn-00Mal-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiZn-00Mal-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiZn-00Mal-LB.json) |
| BiZn-03Kim.tdb | S.S. Kim, T.H. Sanders, Jr., Z. Metallkd., 94, 390-95(2003). [doi:10.1515/ijmr-2003-0070](https://doi.org/10.1515/ijmr-2003-0070) | `33acdc44f5718ce5d4890cd5b5d6aeffea7168f1b3e5842bfd2f8059a3f4b78a` | [viewer](https://orchid-project.org/phase-diagrams/#BI-ZN/BiZn-03Kim.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiZn-03Kim.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiZn-03Kim.json) |
| BiZn-05Dja.tdb | Y. Djaballah, L. Bennour, F. Bouharkat, A. Belgacem-Bouzida, Modelling Simul. Mater. Sci. Eng., 13, 361-69(2005). [doi:10.1088/0965-0393/13/3/006](https://doi.org/10.1088/0965-0393/13/3/006) | `f5ecc95e0f1b3aaf5c4925b8979964b4be90e2de2d410a49bb327cb6aa7c6d93` | [viewer](https://orchid-project.org/phase-diagrams/#BI-ZN/BiZn-05Dja.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiZn-05Dja.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiZn-05Dja.json) |
| BiZn-07Viz.tdb | J. Vizdal, M.H. Braga, A. Kroupa, K.W. Richter, D. Soares, L.F. Malheiros, J. Ferreira, Calphad, 31, 438-48(2007). [doi:10.1016/j.calphad.2007.05.002](https://doi.org/10.1016/j.calphad.2007.05.002) | `0d71ac7c1215c02805ab7daba36a9d02a98bf96fb3907b05d8af4a965cd7bd78` | [viewer](https://orchid-project.org/phase-diagrams/#BI-ZN/BiZn-07Viz.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiZn-07Viz.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiZn-07Viz.json) |
| BiZn-85Gir.tdb | C. Girard, PhD Thesis, University of Provence, Marseille, 1985. | `303007160c50d88dc31951280713c6bd167e1297499ad2925a501d4254cf566d` | [viewer](https://orchid-project.org/phase-diagrams/#BI-ZN/BiZn-85Gir.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiZn-85Gir.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiZn-85Gir.json) |

Table: Calculated three-phase invariants (model, mole fraction of the second component)

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| BiZn-00Mal-LB.tdb | 689.65 | LIQUID (x(Zn) 0.37083) + LIQUID#2 (x(Zn) 0.99253) + HCP_A3 (x(Zn) 0.9993) |
| BiZn-00Mal-LB.tdb | 527.65 | RHOMBOHEDRAL_A7 (x(Zn) 0.01636) + LIQUID (x(Zn) 0.081) + HCP_A3 (x(Zn) 0.99985) |
| BiZn-03Kim.tdb | 688.05 | LIQUID (x(Zn) 0.40749) + LIQUID#2 (x(Zn) 0.99027) + HCP_A3 (x(Zn) 0.99969) |
| BiZn-03Kim.tdb | 520.1 | RHOMBOHEDRAL_A7 (x(Zn) 0.01568) + LIQUID (x(Zn) 0.08865) + HCP_A3 (x(Zn) 0.99987) |
| BiZn-05Dja.tdb | 682.17 | LIQUID (x(Zn) 0.34227) + LIQUID#2 (x(Zn) 0.97549) + HCP_A3 (x(Zn) 1) |
| BiZn-05Dja.tdb | 524.73 | RHOMBOHEDRAL_A7 (x(Zn) 0) + LIQUID (x(Zn) 0.08215) + HCP_A3 (x(Zn) 1) |
| BiZn-05Dja.tdb | 524.73 | RHOMBOHEDRAL_A7 (x(Zn) 0) + LIQUID (x(Zn) 0.0819) + HCP_A3 (x(Zn) 1) |
| BiZn-07Viz.tdb | 691.42 | LIQUID#2 (x(Zn) 0.37374) + LIQUID (x(Zn) 0.99235) + HCP_A3 (x(Zn) 0.99584) |
| BiZn-07Viz.tdb | 527.67 | RHOMBOHEDRAL_A7 (x(Zn) 0.01634) + LIQUID (x(Zn) 0.0809) + HCP_A3 (x(Zn) 0.99855) |
| BiZn-85Gir.tdb | 684.69 | LIQUID (x(Zn) 0.36393) + LIQUID#2 (x(Zn) 0.98047) + HCP_A3 (x(Zn) 0.9992) |
| BiZn-85Gir.tdb | 530.36 | RHOMBOHEDRAL_A7 (x(Zn) 0) + LIQUID (x(Zn) 0.0748) + HCP_A3 (x(Zn) 0.99892) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/BI/BI-ZN.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/BI/BI-ZN.json) · [CALPHAD hull BiZn-00Mal-LB](https://data.orchid-project.org/hulls/calphad-sgte/BI/BI-ZN--BiZn-00Mal-LB.json) · [CALPHAD hull BiZn-03Kim](https://data.orchid-project.org/hulls/calphad-sgte/BI/BI-ZN--BiZn-03Kim.json) · [CALPHAD hull BiZn-05Dja](https://data.orchid-project.org/hulls/calphad-sgte/BI/BI-ZN--BiZn-05Dja.json) · [CALPHAD hull BiZn-85Gir](https://data.orchid-project.org/hulls/calphad-sgte/BI/BI-ZN--BiZn-85Gir.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Bi–Zn system (13)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 690.15 | monotectic: liq 1+Zn -> liq 2 | liq 1: Zn 0.992; Zn: Zn 0.39 | model | [1] Djaballah 2005; _cites Malakhov 2000_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900011-0) | Table 2, p. 6, row 8; `ORC-OJLDJQSWNJ` |  |
| 690.15 | monotectic: liq 1+Zn -> liq 2 | liq 1: Zn 0.992; Zn: Zn 0.31 | experimental | [1] Djaballah 2005; _cites Bouharkat 1996_ [doi](https://doi.org/10.1016/0925-8388%2895%2902095-0) | Table 2, p. 6, row 6; `ORC-UTGMOMOLCB` |  |
| 689.66 | monotectic | Bi-rich liquid: Zn 0.37083; Zn-rich liquid: Zn 0.99253; HCP solution: Zn 0.9993 | model | [2] Malakhov 2000 | Table 8, p. 11, row 1; `ORC-PA7R42IOHW` |  |
| 689.15 | monotectic: liq 1+Zn -> liq 2 | liq 1: Zn 0.994; Zn: Zn 0.37 | experimental | [1] Djaballah 2005; _cites Seith 1955_ [doi](https://doi.org/10.1515/ijmr-1955-461101) | Table 2, p. 6, row 10; `ORC-LFLWE74NN4` |  |
| 688.15 | monotectic: liq 1+Zn -> liq 2 | liq 1: Zn 0.991; Zn: Zn 0.41 | model | [1] Djaballah 2005; _cites Kim 2003_ [doi](https://doi.org/10.3139/146.030390) | Table 2, p. 6, row 9; `ORC-KP26HS4BWY` |  |
| 685.95 | monotectic: liq 1+Zn -> liq 2 | liq 1: Zn 0.98; Zn: Zn 0.401 | model | [1] Djaballah 2005 | Table 2, p. 6, row 11; `ORC-CO3IY67LNI` |  |
| 684.65 | monotectic: liq 1+Zn -> liq 2 | liq 1: Zn 0.364; Zn: Zn 0.999 | unspecified | [1] Djaballah 2005; _cites Girard 1985_ | Table 2, p. 6, row 7; `ORC-3YYUXBWKA2` |  |
| 676.15 | monotectic: liq 1+Zn -> liq 2 | liq 1: Zn 0.9905; Zn: Zn 0.384 | experimental | [1] Djaballah 2005; _cites Khairullin 1996_ | Table 2, p. 6, row 5; `ORC-IPI3U3STQA` |  |
| 530.15 | eutectic: Zn + Bi -> liq 1 | Zn: Zn 1; Bi: Zn 0.074 | unspecified | [1] Djaballah 2005; _cites Girard 1985_ | Table 2, p. 6, row 2; `ORC-HLVLNIMSGH` |  |
| 527.65 | eutectic | Rhombohedral solution: Zn 0.01636; Liquid: Zn 0.081; Hexagonal solution: Zn 0.99985 | model | [2] Malakhov 2000 | Table 9, p. 11, row 1; `ORC-ELEYC6BIG2` |  |
| 527.65 | eutectic: Zn + Bi -> liq 1 | Zn: Zn 0.99; Bi: Zn 0.081 | model | [1] Djaballah 2005; _cites Malakhov 2000_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900011-0) | Table 2, p. 6, row 3; `ORC-HBLSZF5LES` |  |
| 527.15 | eutectic: Zn + Bi -> liq 1 | Zn: Zn 1; Bi: Zn 0.076 | experimental | [1] Djaballah 2005; _cites Bouharkat 1996_ [doi](https://doi.org/10.1016/0925-8388%2895%2902095-0) | Table 2, p. 6, row 1; `ORC-WS4LIR7Y27` |  |
| 526.95 | eutectic: Zn + Bi -> liq 1 | Zn: Zn 1; Bi: Zn 0.071 | model | [1] Djaballah 2005 | Table 2, p. 6, row 4; `ORC-F5Q7JWOZCD` |  |

## Other properties

### Phase transition (10)

Table: Phase transition, Bi–Zn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 846.15 K | 846.15 | critical point: 2 liq -> 1 liq; _2 liq: Zn 0.83_ | experimental | [1] Djaballah 2005; _cites Khairullin 1996_ | Table 2, p. 6, row 16; `ORC-OIXFSOTZNZ` |  |
| Phase transition | 848.15 K | 848.15 | critical point: 2 liq -> 1 liq; _2 liq: Zn 0.83_ | model | [1] Djaballah 2005; _cites Kim 2003_ [doi](https://doi.org/10.3139/146.030390) | Table 2, p. 6, row 20; `ORC-UQT3B7DFBI` |  |
| Phase transition | 848.15 K | 848.15 | critical point: 2 liq -> 1 liq; _2 liq: Zn 0.815_ | unspecified | [1] Djaballah 2005; _cites Glazov 1988_ | Table 2, p. 6, row 13; `ORC-ZA3HJT225R` |  |
| Phase transition | 853.15 K | 853.15 | critical point: 2 liq -> 1 liq; _2 liq: Zn 0.87_ | model | [1] Djaballah 2005; _cites Malakhov 2000_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900011-0) | Table 2, p. 6, row 19; `ORC-HEAV3SMLQZ` |  |
| Phase transition | 853.15 K | 853.15 | critical point: 2 liq -> 1 liq; _2 liq: Zn 0.813_ | experimental | [1] Djaballah 2005; _cites Kanai 1993_ [doi](https://doi.org/10.1143/jpsj.62.2388) | Table 2, p. 6, row 15; `ORC-W6QC4TU3WN` |  |
| Phase transition | 868.15 K | 868.15 | critical point: 2 liq -> 1 liq; _2 liq: Zn 0.85_ | experimental | [1] Djaballah 2005; _cites Bouharkat 1996_ [doi](https://doi.org/10.1016/0925-8388%2895%2902095-0) | Table 2, p. 6, row 17; `ORC-EOZ44ZYXYH` |  |
| Phase transition | 873.15 K | 873.15 | critical point: 2 liq -> 1 liq | unspecified | [1] Djaballah 2005; _cites Singh 1992_ [doi](https://doi.org/10.1515/ijmr-1992-830710) | Table 2, p. 6, row 14; `ORC-TJ34RDMQFE` |  |
| Phase transition | 888.15 K | 888.15 | critical point: 2 liq -> 1 liq; _2 liq: Zn 0.859_ | unspecified | [1] Djaballah 2005; _cites Girard 1985_ | Table 2, p. 6, row 18; `ORC-E3DKOWA6BL` |  |
| Phase transition | 898.15 K | 898.15 | critical point: 2 liq -> 1 liq; _2 liq: Zn 0.85_ | experimental | [1] Djaballah 2005; _cites Okajima 1980_ [doi](https://doi.org/10.2320/matertrans1960.21.226) | Table 2, p. 6, row 12; `ORC-DDZPT2C5SB` |  |
| Phase transition | 906.15 K | 906.15 | critical point: 2 liq -> 1 liq; _2 liq: Zn 0.816_ | model | [1] Djaballah 2005 | Table 2, p. 6, row 21; `ORC-MVCATXHUJW` |  |

## Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

1. Y Djaballah, L Bennour, F Bouharkat, A Belgacem-Bouzida, Thermodynamic assessment of the binary system (Bi–Zn), Modelling Simul. Mater. Sci. Eng. 13, 361-369 (2005). [doi:10.1088/0965-0393/13/3/006](https://doi.org/10.1088/0965-0393/13/3/006)
2. Dmitri V. Malakhov, Thermodynamic assessment of the Bi-Zn system, Calphad 24, 1-14 (2000). [doi:10.1016/s0364-5916(00)00011-0](https://doi.org/10.1016/s0364-5916%2800%2900011-0)

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569
- R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735859
- R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735891
- 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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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).

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_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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 ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).