Hg–Mg system

34 accepted literature values from 1 paper(s) (experimental 15, model 19); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (11) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	15
model	19

Accepted values by property group
Property group	Values
invariant reaction	34

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
HgMg-09Fen.tdb	Y. Feng, R.C. Wang, C.Q. Peng, H.S. Liu, J. Cent. South Univ. Technol., 16, 32-37(2009). doi:10.1007/s11771-009-0005-7	`ddfcb316b5d22cbe0e8b20b9011d76839b690b3dd89aa94776c37796d273f926`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
HgMg-09Fen.tdb	833.84	HG3MG5_D88 (x(Mg) 0.625) + LIQUID (x(Mg) 0.63028) + HGMG2_C37 (x(Mg) 0.66667)
HgMg-09Fen.tdb	833.84	HG3MG5_D88 (x(Mg) 0.625) + LIQUID (x(Mg) 0.63034) + HGMG2_C37 (x(Mg) 0.66667)
HgMg-09Fen.tdb	833.84	HG3MG5_D88 (x(Mg) 0.625) + LIQUID (x(Mg) 0.63016) + HGMG2_C37 (x(Mg) 0.66667)
HgMg-09Fen.tdb	830.89	HGMG_B2 (x(Mg) 0.5) + LIQUID (x(Mg) 0.60213) + HG3MG5_D88 (x(Mg) 0.625)
HgMg-09Fen.tdb	830.88	HGMG_B2 (x(Mg) 0.5) + LIQUID (x(Mg) 0.60205) + HG3MG5_D88 (x(Mg) 0.625)
HgMg-09Fen.tdb	794.16	HGMG2_C37 (x(Mg) 0.66667) + HG2MG5 (x(Mg) 0.71429) + LIQUID (x(Mg) 0.75895)
HgMg-09Fen.tdb	794.16	HGMG2_C37 (x(Mg) 0.66667) + HG2MG5 (x(Mg) 0.71429) + LIQUID (x(Mg) 0.75887)
HgMg-09Fen.tdb	780.47	HG2MG5 (x(Mg) 0.71429) + HGMG3 (x(Mg) 0.75) + LIQUID (x(Mg) 0.7807)
HgMg-09Fen.tdb	780.47	HG2MG5 (x(Mg) 0.71429) + HGMG3 (x(Mg) 0.75) + LIQUID (x(Mg) 0.78053)
HgMg-09Fen.tdb	780.47	HG2MG5 (x(Mg) 0.71429) + HGMG3 (x(Mg) 0.75) + LIQUID (x(Mg) 0.78075)
HgMg-09Fen.tdb	718.95	HGMG3 (x(Mg) 0.75) + LIQUID (x(Mg) 0.85482) + HCP_A3 (x(Mg) 0.98164)
HgMg-09Fen.tdb	718.95	HGMG3 (x(Mg) 0.75) + LIQUID (x(Mg) 0.85484) + HCP_A3 (x(Mg) 0.98165)
HgMg-09Fen.tdb	441.1	LIQUID (x(Mg) 0.18681) + HG2MG_C11B (x(Mg) 0.33333) + HGMG_B2 (x(Mg) 0.5)
HgMg-09Fen.tdb	441.1	LIQUID (x(Mg) 0.18696) + HG2MG_C11B (x(Mg) 0.33333) + HGMG_B2 (x(Mg) 0.5)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Hg–Mg system (34)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
903	congruent melting: L↔MgHg	MgHg: Hg 0.5	experimental	[1] Feng 2009 cites ref. 25	Table 6, p. 5, row 24 report
900	congruent melting: L↔MgHg	MgHg: Hg 0.5	experimental	[1] Feng 2009 cites ref. 26	Table 6, p. 5, row 25 report
899	congruent melting: L↔MgHg	MgHg: Hg 0.5	model	[1] Feng 2009	Table 6, p. 5, row 27 report
889	congruent melting: L↔MgHg	MgHg: Hg 0.5	model	[1] Feng 2009 cites ref. 27	Table 6, p. 5, row 26 report
853	congruent melting: L↔Mg2Hg	Mg2Hg: Hg 0.3333	experimental	[1] Feng 2009 cites ref. 25	Table 6, p. 5, row 11 report
847	congruent melting: L↔Mg2Hg	Mg2Hg: Hg 0.333	model	[1] Feng 2009 cites ref. 27	Table 6, p. 5, row 13 report
843	congruent melting: L↔Mg2Hg	Mg2Hg: Hg 0.3333	experimental	[1] Feng 2009 cites ref. 26	Table 6, p. 5, row 12 report
842	congruent melting: L↔Mg2Hg	Mg2Hg: Hg 0.333	model	[1] Feng 2009	Table 6, p. 5, row 14 report
835	congruent melting: L↔Mg5Hg3	Mg5Hg3: Hg 0.375	experimental	[1] Feng 2009 cites ref. 25	Table 6, p. 5, row 18 report
835	congruent melting: L↔Mg5Hg3	L: Hg 0.375, Mg 0.625; Mg5Hg3: Hg 0.375, Mg 0.625	model	[1] Feng 2009 cites ref. 27	Table 6, p. 5, row 19 report
834	congruent melting: L↔Mg5Hg3	Mg5Hg3: Hg 0.375	model	[1] Feng 2009	Table 6, p. 5, row 20 report
833.5	eutectic: L↔Mg2Hg+Mg5Hg3	L: Hg 0.371; Mg2Hg: Hg 0.333; Mg5Hg3: Hg 0.375	model	[1] Feng 2009	Table 6, p. 5, row 17 report
833	eutectic: L↔MgHg+Mg5Hg3	L: Hg 0.4; MgHg: Hg 0.5; Mg5Hg3: Hg 0.375	experimental	[1] Feng 2009 cites ref. 25	Table 6, p. 5, row 21 report
832	eutectic: L↔MgHg+Mg5Hg3	MgHg: Hg 0.5, Mg 0.5; Mg5Hg3: Hg 0.375, Mg 0.625	model	[1] Feng 2009 cites ref. 27	Table 6, p. 5, row 22 report
831	eutectic: L↔Mg2Hg+Mg5Hg3	L: Hg 0.362; Mg2Hg: Hg 0.3333; Mg5Hg3: Hg 0.375	experimental	[1] Feng 2009 cites ref. 25	Table 6, p. 5, row 15 report
831	eutectic: L↔Mg2Hg+Mg5Hg3	Mg2Hg: Hg 0.333333, Mg 0.666667; Mg5Hg3: Hg 0.375, Mg 0.625	experimental	[1] Feng 2009 cites ref. 28	Table 6, p. 5, row 16 report
831	eutectic: L↔MgHg+Mg5Hg3	L: Hg 0.398; MgHg: Hg 0.5; Mg5Hg3: Hg 0.375	model	[1] Feng 2009	Table 6, p. 5, row 23 report
791	peritectic: L+Mg2Hg↔Mg5Hg2	L: Hg 0.237; Mg2Hg: Hg 0.333; Mg5Hg2: Hg 0.286	model	[1] Feng 2009	Table 6, p. 5, row 10 report
790	peritectic: L+Mg2Hg↔Mg5Hg2	Mg2Hg: Hg 0.333333, Mg 0.666667; Mg5Hg2: Hg 0.285714, Mg 0.714286	model	[1] Feng 2009 cites ref. 27	Table 6, p. 5, row 9 report
788	peritectic: L+Mg2Hg↔Mg5Hg2	L: Hg 0.25; Mg2Hg: Hg 0.3333; Mg5Hg2: Hg 0.2857	experimental	[1] Feng 2009 cites ref. 25	Table 6, p. 5, row 8 report
781.7	peritectic: L+Mg5Hg2↔Mg3Hg	L: Hg 0.223; Mg5Hg2: Hg 0.286; Mg3Hg: Hg 0.25	model	[1] Feng 2009	Table 6, p. 5, row 7 report
781	peritectic: L+Mg5Hg2↔Mg3Hg	L: Hg 0.24; Mg5Hg2: Hg 0.2857; Mg3Hg: Hg 0.25	experimental	[1] Feng 2009 cites ref. 26	Table 6, p. 5, row 5 report
771	peritectic: L+Mg5Hg2↔Mg3Hg	Mg5Hg2: Hg 0.285714, Mg 0.714286; Mg3Hg: Hg 0.25, Mg 0.75	model	[1] Feng 2009 cites ref. 27	Table 6, p. 5, row 6 report
731	eutectic: L↔(Mg)+Mg3Hg	L: Hg 0.17; (Mg): Hg 0.0045; Mg3Hg: Hg 0.25	experimental	[1] Feng 2009 cites ref. 25	Table 6, p. 5, row 1 report
727	eutectic: L↔(Mg)+Mg3Hg	Mg3Hg: Hg 0.25, Mg 0.75	model	[1] Feng 2009 cites ref. 27	Table 6, p. 5, row 3 report
721	eutectic: L↔(Mg)+Mg3Hg	L: Hg 0.175; (Mg): Hg 0.012; Mg3Hg: Hg 0.25	experimental	[1] Feng 2009 cites ref. 26	Table 6, p. 5, row 2 report
719.6	eutectic: L↔(Mg)+Mg3Hg	L: Hg 0.146; (Mg): Hg 0.02; Mg3Hg: Hg 0.25	model	[1] Feng 2009	Table 6, p. 5, row 4 report
444	peritectic: L+MgHg↔MgHg2	MgHg: Hg 0.5, Mg 0.5; MgHg2: Hg 0.666667, Mg 0.333333	model	[1] Feng 2009 cites ref. 27	Table 6, p. 5, row 30 report
443.1	peritectic: L+MgHg↔MgHg2	L: Hg 0.812; MgHg: Hg 0.5; MgHg2: Hg 0.667	model	[1] Feng 2009	Table 6, p. 5, row 31 report
443	peritectic: L+MgHg↔MgHg2	L: Hg 0.8066; MgHg: Hg 0.5; MgHg2: Hg 0.6667	experimental	[1] Feng 2009 cites ref. 26	Table 6, p. 5, row 29 report
442	peritectic: L+MgHg↔MgHg2	L: Hg 0.806; MgHg: Hg 0.5; MgHg2: Hg 0.6667	experimental	[1] Feng 2009 cites ref. 24	Table 6, p. 5, row 28 report
234	eutectic: L↔Hg+MgHg2	L: Hg 0.999; Hg: Hg 1; MgHg2: Hg 0.667	model	[1] Feng 2009	Table 6, p. 5, row 34 report
232	eutectic: L↔Hg+MgHg2	Hg: Hg 1; MgHg2: Hg 0.6667	experimental	[1] Feng 2009 cites ref. 24	Table 6, p. 5, row 32 report
232	eutectic: L↔Hg+MgHg2	MgHg2: Hg 0.666667, Mg 0.333333	model	[1] Feng 2009 cites ref. 27	Table 6, p. 5, row 33 report

Sources

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

Yan Feng, Ri-chu Wang, Chao-qun Peng, Hua-shan Liu, Thermodynamic reassessment of Ga-Hg and Mg-Hg systems, J. Cent. South Univ. Technol. 16, 32-37 (2009). doi:10.1007/s11771-009-0005-7

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}
}