# Ca–Zn system > Ca–Zn system: 25 accepted literature values (invariant reaction 25) and 1 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/CA-ZN.html · Markdown: https://data.orchid-project.org/systems/CA-ZN.md 25 accepted literature values from 1 paper(s) (experimental 11, model 14); 1 calculated phase diagram(s). 5 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/CA-ZN.json) · [CSV](https://data.orchid-project.org/systems/CA-ZN.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CA-ZN) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#CA-ZN/CaZn-01Bru-LB.json) · [phases (12)](https://data.orchid-project.org/phases/pages/CA-ZN.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CA-ZN.html) · [Markdown](https://data.orchid-project.org/systems/CA-ZN.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 11 | | model | 14 | Table: Accepted values by property group | Property group | Values | |---|---:| | invariant reaction | 25 | ## 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 | |---|---|---|---| | CaZn-01Bru-LB.tdb | C.O. Brubaker, Z.-K. Liu, Calphad, 25, 381-90(2001). [doi:10.1016/S0364-5916(01)00057-8](https://doi.org/10.1016/S0364-5916%2801%2900057-8) | `eb4fa78bc4dab53778530ef9cc88783ada49f84507840d456cfe075afc266750` | [viewer](https://orchid-project.org/phase-diagrams/#CA-ZN/CaZn-01Bru-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CaZn-01Bru-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CaZn-01Bru-LB.json) | Table: Calculated three-phase invariants (model, mole fraction of the second component) | TDB file | T (K) | Phases at the invariant | |---|---:|---| | CaZn-01Bru-LB.tdb | 957.51 | CAZN5_D2D (x(Zn) 0.83333) + LIQUID (x(Zn) 0.8613) + CAZN11 (x(Zn) 0.91667) | | CaZn-01Bru-LB.tdb | 957.51 | CAZN5_D2D (x(Zn) 0.83333) + LIQUID (x(Zn) 0.86101) + CAZN11 (x(Zn) 0.91667) | | CaZn-01Bru-LB.tdb | 957.5 | CAZN5_D2D (x(Zn) 0.83333) + LIQUID (x(Zn) 0.8612) + CAZN11 (x(Zn) 0.91667) | | CaZn-01Bru-LB.tdb | 941.8 | CAZN11 (x(Zn) 0.91667) + CAZN13_D23 (x(Zn) 0.92857) + LIQUID (x(Zn) 0.97036) | | CaZn-01Bru-LB.tdb | 941.79 | CAZN11 (x(Zn) 0.91667) + CAZN13_D23 (x(Zn) 0.92857) + LIQUID (x(Zn) 0.97045) | | CaZn-01Bru-LB.tdb | 914.29 | CAZN2 (x(Zn) 0.66667) + LIQUID (x(Zn) 0.74502) + CAZN3 (x(Zn) 0.75) | | CaZn-01Bru-LB.tdb | 914.29 | CAZN2 (x(Zn) 0.66667) + LIQUID (x(Zn) 0.74506) + CAZN3 (x(Zn) 0.75) | | CaZn-01Bru-LB.tdb | 914.29 | CAZN2 (x(Zn) 0.66667) + LIQUID (x(Zn) 0.74488) + CAZN3 (x(Zn) 0.75) | | CaZn-01Bru-LB.tdb | 911.54 | CAZN3 (x(Zn) 0.75) + LIQUID (x(Zn) 0.76584) + CAZN5_D2D (x(Zn) 0.83333) | | CaZn-01Bru-LB.tdb | 715.33 | FCC_A1 (x(Zn) 0.00113) + BCC_A2 (x(Zn) 0.00128) + LIQUID (x(Zn) 0.23298) | | CaZn-01Bru-LB.tdb | 710.83 | LIQUID (x(Zn) 0.40705) + CAZN_B33 (x(Zn) 0.5) + CAZN2 (x(Zn) 0.66667) | | CaZn-01Bru-LB.tdb | 710.83 | LIQUID (x(Zn) 0.40762) + CAZN_B33 (x(Zn) 0.5) + CAZN2 (x(Zn) 0.66667) | | CaZn-01Bru-LB.tdb | 692.65 | CAZN13_D23 (x(Zn) 0.92857) + LIQUID (x(Zn) 0.99995) + HCP_A3 (x(Zn) 1) | | CaZn-01Bru-LB.tdb | 692.65 | CAZN13_D23 (x(Zn) 0.92857) + LIQUID (x(Zn) 0.99995) + HCP_A3 (x(Zn) 1) | | CaZn-01Bru-LB.tdb | 685.83 | LIQUID (x(Zn) 0.354) + CA5ZN3_D8L (x(Zn) 0.375) + CAZN_B33 (x(Zn) 0.5) | | CaZn-01Bru-LB.tdb | 685.83 | LIQUID (x(Zn) 0.35352) + CA5ZN3_D8L (x(Zn) 0.375) + CAZN_B33 (x(Zn) 0.5) | | CaZn-01Bru-LB.tdb | 685.83 | LIQUID (x(Zn) 0.3543) + CA5ZN3_D8L (x(Zn) 0.375) + CAZN_B33 (x(Zn) 0.5) | | CaZn-01Bru-LB.tdb | 665.87 | FCC_A1 (x(Zn) 0.00106) + CA3ZN_E1A (x(Zn) 0.25) + LIQUID (x(Zn) 0.26078) | | CaZn-01Bru-LB.tdb | 665.87 | FCC_A1 (x(Zn) 0.00105) + CA3ZN_E1A (x(Zn) 0.25) + LIQUID (x(Zn) 0.26089) | | CaZn-01Bru-LB.tdb | 664.85 | CA3ZN_E1A (x(Zn) 0.25) + LIQUID (x(Zn) 0.27286) + CA5ZN3_D8L (x(Zn) 0.375) | | CaZn-01Bru-LB.tdb | 664.85 | CA3ZN_E1A (x(Zn) 0.25) + LIQUID (x(Zn) 0.27257) + CA5ZN3_D8L (x(Zn) 0.375) | | CaZn-01Bru-LB.tdb | 664.85 | CA3ZN_E1A (x(Zn) 0.25) + LIQUID (x(Zn) 0.27293) + CA5ZN3_D8L (x(Zn) 0.375) | | CaZn-01Bru-LB.tdb | 664.85 | CA3ZN_E1A (x(Zn) 0.25) + LIQUID (x(Zn) 0.27255) + CA5ZN3_D8L (x(Zn) 0.375) | Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/CA/CA-ZN.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/CA/CA-ZN.json) ## Invariant reactions (literature) Table: Invariant reactions reported in the literature for the Ca–Zn system (25) | T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote | |---:|---|---|---|---|---|---| | 999.4 | congruent melting: L = CaZn11 | L: Zn 0.917; CaZn11: Zn 0.917 | model | [1] Brubaker 2001 | Table 1, p. 3, row 20; `ORC-BVDSH2SXFV` | | | 997 | congruent melting: L = CaZn11 | L: Zn 0.917; CaZn11: Zn 0.917 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 19; `ORC-5BCQYMXOOQ` | | | 977 | congruent melting: L = CaZn2 | L: Zn 0.667; CaZn2: Zn 0.667 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 9; `ORC-C3RIQZK6PS` | | | 976.5 | congruent melting: L = CaZn2 | L: Zn 0.667; CaZn2: Zn 0.667 | model | [1] Brubaker 2001 | Table 1, p. 3, row 10; `ORC-33OGG2YPON` | | | 969.6 | congruent melting: L = CaZn5 | L: Zn 0.833; CaZn5: Zn 0.833 | model | [1] Brubaker 2001 | Table 1, p. 3, row 16; `ORC-IQ6QX7PE74` | | | 968 | congruent melting: L = CaZn5 | L: Zn 0.833; CaZn5: Zn 0.833 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 15; `ORC-J6IORGOEQI` | | | 963 | L = CaZn5 + CaZn11 | L: Zn 0.864; CaZn5: Zn 0.833; CaZn11: Zn 0.917 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 17; `ORC-TAC425XVSK` | | | 957.5 | L = CaZn5 + CaZn11 | L: Zn 0.863; CaZn5: Zn 0.833; CaZn11: Zn 0.917 | model | [1] Brubaker 2001 | Table 1, p. 3, row 18; `ORC-PM5WGFPKLH` | | | 942 | L + CaZn11 = CaZn13 | L: Zn 0.97; CaZn11: Zn 0.917; CaZn13: Zn 0.929 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 21; `ORC-JKP6DMYLRO` | | | 941.8 | L + CaZn11 = CaZn13 | L: Zn 0.969; CaZn11: Zn 0.917; CaZn13: Zn 0.929 | model | [1] Brubaker 2001 | Table 1, p. 3, row 22; `ORC-V6HNT7HT4R` | | | 914.6 | congruent melting: L = CaZn3 | L: Zn 0.75; CaZn3: Zn 0.75 | model | [1] Brubaker 2001 | Table 1, p. 3, row 12; `ORC-QBZAUCTVHP` | | | 914.3 | L = CaZn2 + CaZn3 | L: Zn 0.746; CaZn2: Zn 0.667; CaZn3: Zn 0.75 | model | [1] Brubaker 2001 | Table 1, p. 3, row 11; `ORC-F2S2ML63I7` | | | 914 | eutectic | | model | [1] Brubaker 2001 | p. 3; `ORC-LZBQPWYK2Q` | “It follows that there must be a eutectic reaction between CaZn2 and CaZn3, which was assumed to be at 74.2% zinc, and at a temperature of 914K.” | | 911.5 | L = CaZn3 + CaZn5 | L: Zn 0.764; CaZn3: Zn 0.75; CaZn5: Zn 0.833 | model | [1] Brubaker 2001 | Table 1, p. 3, row 14; `ORC-53ZLLZJ2AM` | | | 911 | L = CaZn3 + CaZn5 | L: Zn 0.764; CaZn3: Zn 0.75; CaZn5: Zn 0.833 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 13; `ORC-7QFYEKU5F5` | | | 712 | L + CaZn2 = CaZn | L: Zn 0.425; CaZn2: Zn 0.667; CaZn: Zn 0.5 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 7; `ORC-S4KCRVJN3D` | | | 710.8 | L + CaZn2 = CaZn | L: Zn 0.406; CaZn2: Zn 0.667; CaZn: Zn 0.5 | model | [1] Brubaker 2001 | Table 1, p. 3, row 8; `ORC-7CYNXQ4MR2` | | | 692.7 | L = Zn + CaZn13 | L: Zn 1; Zn: Zn 1; CaZn13: Zn 0.929 | model | [1] Brubaker 2001 | Table 1, p. 3, row 24; `ORC-PJRTGZZZFC` | | | 692.5 | L = Zn + CaZn13 | L: Zn 1; Zn: Zn 1; CaZn13: Zn 0.929 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 23; `ORC-2L52LI7XTP` | | | 687 | L + CaZn = Ca5Zn3 | L: Zn 0.35; CaZn: Zn 0.5; Ca5Zn3: Zn 0.375 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 5; `ORC-67X4ETCRFQ` | | | 685.8 | L + CaZn = Ca5Zn3 | L: Zn 0.352; CaZn: Zn 0.5; Ca5Zn3: Zn 0.375 | model | [1] Brubaker 2001 | Table 1, p. 3, row 6; `ORC-BNIIJ6B3KQ` | | | 667 | L + αCa = Ca3Zn | L: Zn 0.27; αCa: Zn 0; Ca3Zn: Zn 0.25 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 1; `ORC-6WJIPT654O` | | | 665.9 | L + αCa = Ca3Zn | L: Zn 0.261; αCa: Zn 0; Ca3Zn: Zn 0.25 | model | [1] Brubaker 2001 | Table 1, p. 3, row 2; `ORC-J362KSVA2Y` | | | 664.9 | L = Ca3Zn + Ca5Zn3 | L: Zn 0.273; Ca3Zn: Zn 0.25; Ca5Zn3: Zn 0.375 | model | [1] Brubaker 2001 | Table 1, p. 3, row 4; `ORC-UHRXY3LRRH` | | | 664 | L = Ca3Zn + Ca5Zn3 | L: Zn 0.274; Ca3Zn: Zn 0.25; Ca5Zn3: Zn 0.375 | experimental | [1] Brubaker 2001; _cites Messing 1963_ | Table 1, p. 3, row 3; `ORC-432YAXBMPQ` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. Carl O. Brubaker, Zi-Kui Liu, A computational thermodynamic assessment of the Ca-Zn system, Calphad 25, 381-390 (2001). [doi:10.1016/s0364-5916(01)00057-8](https://doi.org/10.1016/s0364-5916%2801%2900057-8) ## 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=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).