Cd–Hg system

5 accepted literature values from 2 paper(s) (experimental 3, model 2); 1 calculated phase diagram(s). 1 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 (6) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	3
model	2

Accepted values by property group
Property group	Values
invariant reaction	5

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
CdHg-95Yan-LB.tdb	J. Yang, N.J. Silk, A. Watson, A.W. Bryant, T.G. Chart, B.B. Argent, Calphad, 19, 415-30(1995). doi:10.1016/0364-5916(95)00039-H	`284289a9e34cef691c30bc763223c7a65862b588ea6f7fc050d5c8ff67fc3d46`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CdHg-95Yan-LB.tdb	459.18	HCP_A3 (x(Hg) 0.26036) + TETRAGONAL_A6 (x(Hg) 0.29794) + LIQUID (x(Hg) 0.36641)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Cd–Hg system (5)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
461.15	ℓ + hcp -> ω	L: Hg 0.36; hcp: Hg 0.25; ω: Hg 0.29	experimental	[1] Hansen 1998	Table A2, p. 14, row 1 report
460.15	ℓ + hcp -> ω	L: Hg 0.36; hcp: Hg 0.23; ω: Hg 0.29	model	[1] Hansen 1998	Table A2, p. 14, row 2 report
240.15	ℓ + ω -> rhom	L: Hg 0.983; ω: Hg 0.88; rhom: Hg 0.961	model	[1] Hansen 1998	Table A2, p. 14, row 4 report
239.15	peritectic		experimental	[2] Yang 1995 cites Mehl 1930	p. 3 report	In 1930 Mehl et al. (5) extended investigations to higher Hg concentrations and using X-ray and thermal analysis methods discovered the presence of the rhombohedral primary solid solution and a peritectic reaction at -34°C from 88-97 at'/0Hg.
239.15	ℓ + ω -> rhom	L: Hg 0.987; ω: Hg 0.88; rhom: Hg 0.965	experimental	[1] Hansen 1998	Table A2, p. 14, row 3 report

Sources

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

S.C. Hansen, Thermodynamic assessment of binary Zn-Hg, Cd-Hg, AND In-Hg amalgams, Calphad 22, 359-373 (1998). doi:10.1016/s0364-5916(98)00036-4
J. Yang, N.J. Silk, A. Watson, A.W. Bryant, T.G. Chart, B.B. Argent, The thermodynamics and phase diagrams of the Cd-Hg and Cd-Hg-Te systems, Calphad 19, 415-430 (1995). doi:10.1016/0364-5916(95)00039-h

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}
}