Ca–Zn system

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 · CSV · interactive explorer · interactive phase diagram · phases (12) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	11
model	14

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.

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	`eb4fa78bc4dab53778530ef9cc88783ada49f84507840d456cfe075afc266750`	viewer · TDB · JSON

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 · OQMD DFT hull

Invariant reactions (literature)

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 report
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 report
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 report
976.5	congruent melting: L = CaZn2	L: Zn 0.667; CaZn2: Zn 0.667	model	[1] Brubaker 2001	Table 1, p. 3, row 10 report
969.6	congruent melting: L = CaZn5	L: Zn 0.833; CaZn5: Zn 0.833	model	[1] Brubaker 2001	Table 1, p. 3, row 16 report
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 report
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 report
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 report
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 report
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 report
914.6	congruent melting: L = CaZn3	L: Zn 0.75; CaZn3: Zn 0.75	model	[1] Brubaker 2001	Table 1, p. 3, row 12 report
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 report
914	eutectic		model	[1] Brubaker 2001	p. 3 report	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 report
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 report
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 report
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 report
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 report
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 report
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 report
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 report
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 report
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 report
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 report
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 report

Sources

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

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

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). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi: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). doi: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). doi: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.

@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}
}