Hg–Tl system

9 accepted literature values from 1 paper(s) (experimental 9); 1 calculated phase diagram(s). 4 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 (5) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	9

Accepted values by property group
Property group	Values
invariant reaction	2
phase transition	1
crystal structure	6

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
HgTl-06Gie.tdb	W. Gierlotka, J. Sopousek, K. Fitzner, Calphad, 30, 425-30(2006). doi:10.1016/j.calphad.2006.07.006	`b983c40f702539751db32d43ec0a48f18531fd643c33041a4ba9ab3402e7f518`	viewer · TDB · JSON

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Hg–Tl system (2)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
273.9	eutectic: L -> (β-Tl) + gamma	L: Tl 0.405; Hg5Tl2: Tl 0.285714	experimental	[1] Gierlotka 2006 cites Richter 1973 doi	Table 3, p. 3, row 3 report
213	eutectic: L -> (α-Hg) + gamma	L: Tl 0.086; (αHg): Tl 0; Hg5Tl2: Tl 0.285714	experimental	[1] Gierlotka 2006 cites Claire 1980 doi	Table 3, p. 3, row 2 report

Other properties

Phase transition (1)

Phase transition, Hg–Tl system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	291 K	291	congruent melting: L -> gamma L: Tl 0.286; γ: Tl 0.286	experimental	[1] Gierlotka 2006 cites Hansen 1958	Table 3, p. 3, row 1 report

Crystal structure (6)

Crystal structure, Hg–Tl system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	399.5 not_printed	78 (<)	(βHg) alloy: Tl 0	experimental	[1] Gierlotka 2006 cites Amand 1978 doi	Table 1, p. 2, row 1 report
Lattice a	460.2 not_printed	156.5	(αHg) alloy: Tl 0	experimental	[1] Gierlotka 2006 cites Amand 1978 doi	Table 1, p. 2, row 2 report
Lattice a	300.5 not_printed	156.5	(αHg) alloy: Tl 0	experimental	[1] Gierlotka 2006 cites Amand 1978 doi	Table 1, p. 2, row 2 report
Lattice a	468 not_printed	291 (<)	γ	experimental	[1] Gierlotka 2006 cites Amand 1978 doi	Table 1, p. 2, row 5 report
Lattice a	462.8 not_printed	291 (<)	γ	experimental	[1] Gierlotka 2006 cites Amand 1978 doi	Table 1, p. 2, row 5 report
Lattice c	282.5 not_printed	78 (<)	(βHg) alloy: Tl 0	experimental	[1] Gierlotka 2006 cites Amand 1978 doi	Table 1, p. 2, row 1 report

Sources

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

W. Gierlotka, J. Sopousek, K. Fitzner, Thermodynamic assessment of the Hg–Tl system, Calphad 30, 425-430 (2006). doi:10.1016/j.calphad.2006.07.006

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}
}