Ca–Na system

4 accepted literature values from 1 paper(s) (experimental 1, model 3); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (4) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	1
model	3

Accepted values by property group
Property group	Values
invariant reaction	4

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
CaNa-03Zha.tdb	S. Zhang, D. Shin, Z.-K. Liu, Calphad, 27, 235-41(2003). doi:10.1016/j.calphad.2003.09.001	`5ea350c8fd6e8ccc531a1731f95e9c4f51654d8da5e0fd593eb3c893e0ef8751`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CaNa-03Zha.tdb	983.97	BCC_A2 (x(Na) 0.10174) + LIQUID#2 (x(Na) 0.22166) + LIQUID (x(Na) 0.95889)
CaNa-03Zha.tdb	707.35	FCC_A1 (x(Na) 0.00363) + BCC_A2 (x(Na) 0.00563) + LIQUID (x(Na) 0.99499)
CaNa-03Zha.tdb	370.87	FCC_A1 (x(Na) 5.000e-5) + LIQUID (x(Na) 0.99999) + BCC_A2 (x(Na) 1)
CaNa-03Zha.tdb	370.87	FCC_A1 (x(Na) 5.000e-5) + LIQUID (x(Na) 0.99999) + BCC_A2 (x(Na) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ca–Na system (4)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
983.9	monotectic: Liquid1 -> bcc(Ca) + liquid2	Liquid1: Na 0.221; bcc(Ca): Na 0.102; liquid2: Na 0.959	model	[1] Zhang 2003	Table 2, p. 3, row 1 report
983	monotectic: Liquid1 -> bcc(Ca) + liquid2	Liquid1: Na 0.221; liquid2: Na 0.959	experimental	[1] Zhang 2003 cites Rinck 1931	Table 2, p. 3, row 2 report
707.3	Bcc(Ca) -> fcc(Ca) + liquid2	Bcc(Ca): Na 0.00563; liquid2: Na 0.995	model	[1] Zhang 2003	Table 2, p. 3, row 3 report
370.9	eutectic: Liquid2 -> fcc(Ca) + bcc(Na)	Liquid2: Na 0.99998; fcc(Ca): Na 5.200e-5; bcc(Na): Na 0.99999	model	[1] Zhang 2003	Table 2, p. 3, row 4 report

Sources

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

Shengjun Zhang, Dongwon Shin, Zi-Kui Liu, Thermodynamic modeling of the Ca–Li–Na system, Calphad 27, 235-241 (2003). doi:10.1016/j.calphad.2003.09.001

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}
}