Bi–Rh system

24 accepted literature values from 1 paper(s) (experimental 17, model 7); 1 calculated phase diagram(s). 3 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 (10) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	17
model	7

Accepted values by property group
Property group	Values
invariant reaction	24

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
BiRh-20Zob.tdb	O. Zobac, A. Kroupa, J. Phase Equilib. Diffus., 41, 900-906(2020). doi:10.1007/s11669-020-00854-w	`32604489a1ba747545276273d0f6604faa12fa5949b118c070ee97f3d76f1bef`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
BiRh-20Zob.tdb	1252.99	LIQUID (x(Rh) 0.46973) + BIRH_B81 (x(Rh) 0.49618) + FCC_A1 (x(Rh) 0.98971)
BiRh-20Zob.tdb	1058.19	LIQUID (x(Rh) 0.29831) + BI2RH_HT (x(Rh) 0.33333) + BIRH_B81 (x(Rh) 0.46135)
BiRh-20Zob.tdb	1058.19	LIQUID (x(Rh) 0.29844) + BI2RH_HT (x(Rh) 0.33333) + BIRH_B81 (x(Rh) 0.4614)
BiRh-20Zob.tdb	755.1	BI2RH_HT (x(Rh) 0.33333) + BI55RH45_B31 (x(Rh) 0.45) + BIRH_B81 (x(Rh) 0.46682)
BiRh-20Zob.tdb	755.1	BI2RH_HT (x(Rh) 0.33333) + BI55RH45_B31 (x(Rh) 0.45) + BIRH_B81 (x(Rh) 0.46686)
BiRh-20Zob.tdb	734.56	LIQUID (x(Rh) 0.14134) + BI4RH (x(Rh) 0.2) + BI2RH_HT (x(Rh) 0.33333)
BiRh-20Zob.tdb	734.56	LIQUID (x(Rh) 0.14132) + BI4RH (x(Rh) 0.2) + BI2RH_HT (x(Rh) 0.33333)
BiRh-20Zob.tdb	734.56	LIQUID (x(Rh) 0.1413) + BI4RH (x(Rh) 0.2) + BI2RH_HT (x(Rh) 0.33333)
BiRh-20Zob.tdb	703.05	BI2RH_HT (x(Rh) 0.33333) + BI2RH_LT (x(Rh) 0.33333) + BI55RH45_B31 (x(Rh) 0.45)
BiRh-20Zob.tdb	703.05	BI4RH (x(Rh) 0.2) + BI2RH_LT (x(Rh) 0.33333) + BI2RH_HT (x(Rh) 0.33333)
BiRh-20Zob.tdb	540.16	RHOMBOHEDRAL_A7 (x(Rh) 0) + LIQUID (x(Rh) 0.01682) + BI4RH (x(Rh) 0.2)
BiRh-20Zob.tdb	540.16	RHOMBOHEDRAL_A7 (x(Rh) 0) + LIQUID (x(Rh) 0.01666) + BI4RH (x(Rh) 0.2)
BiRh-20Zob.tdb	540.16	RHOMBOHEDRAL_A7 (x(Rh) 0) + LIQUID (x(Rh) 0.01665) + BI4RH (x(Rh) 0.2)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Bi–Rh system (24)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1270.15	L + Rh -> BiRh	L: Rh 0.45; Rh: Rh 1	experimental	[1] Zobač 2020 cites Okamoto 2010 doi	Table 2, p. 3, row 2 report
1253.25	L + Rh -> BiRh	L: Rh 0.471; Rh: Rh 1; BiRh: Rh 0.496	model	[1] Zobač 2020	Table 2, p. 3, row 4 report
1252.15	L + Rh -> BiRh	L: Rh 0.47; Rh: Rh 1; BiRh: Rh 0.5	experimental	[1] Zobač 2020 cites Kainzbauer 2018	Table 2, p. 3, row 3 report
1250.15	peritectic: L + Rh -> BiRh	L: Rh 0.46; Rh: Rh 1; BiRh: Rh 0.5	experimental	[1] Zobač 2020 cites Predel 1992	Table 2, p. 3, row 1 report
1058.15	L + BiRh -> Bi2Rh_HT	L: Rh 0.29; BiRh: Rh 0.47; Bi2Rh_HT: Rh 0.333	experimental	[1] Zobač 2020 cites Kainzbauer 2018	Table 2, p. 3, row 7 report
1058.05	L + BiRh -> Bi2Rh_HT	L: Rh 0.298; BiRh: Rh 0.461; Bi2Rh_HT: Rh 0.333	model	[1] Zobač 2020	Table 2, p. 3, row 8 report
1053.15	peritectic: L + BiRh -> Bi2Rh_HT	L: Rh 0.295; BiRh: Rh 0.48; Bi2Rh_HT: Rh 0.333	experimental	[1] Zobač 2020 cites Predel 1992	Table 2, p. 3, row 5 report
1049.15	L + BiRh -> Bi2Rh_HT	L: Rh 0.295; BiRh: Rh 0.45; Bi2Rh_HT: Rh 0.333	experimental	[1] Zobač 2020 cites Okamoto 2010 doi	Table 2, p. 3, row 6 report
755.05	Bi2Rh_HT + BiRh -> Bi55Rh45	Bi2Rh_HT: Rh 0.333; BiRh: Rh 0.493; Bi55Rh45: Rh 0.467	model	[1] Zobač 2020	Table 2, p. 3, row 10 report
753.15	peritectoid: Bi2Rh_HT + BiRh -> Bi55Rh45	BiRh: Rh 0.5; Bi55Rh45: Rh 0.45	experimental	[1] Zobač 2020 cites Kainzbauer 2018	Table 2, p. 3, row 9 report
739.15	L + Bi2Rh_HT -> Ri4Rh	L: Rh 0.083; Bi2Rh_HT: Rh 0.333; Ri4Rh: Rh 0.2	experimental	[1] Zobač 2020 cites Okamoto 2010 doi	Table 2, p. 3, row 12 report
734.35	L + Bi2Rh_HT -> Ri4Rh	L: Rh 0.141; Bi2Rh_HT: Rh 0.333; Ri4Rh: Rh 0.2	model	[1] Zobač 2020	Table 2, p. 3, row 14 report
733.15	peritectic: L + Bi2Rh_HT -> Ri4Rh	L: Rh 0.07; Bi2Rh_HT: Rh 0.333; Ri4Rh: Rh 0.2	experimental	[1] Zobač 2020 cites Predel 1992	Table 2, p. 3, row 11 report
732.15	L + Bi2Rh_HT -> Ri4Rh	L: Rh 0.085; Ri4Rh: Rh 0.2	experimental	[1] Zobač 2020 cites Kainzbauer 2018	Table 2, p. 3, row 13 report
713.15	peritectoid: Bi2Rh_HT + Bi55Rh45 -> Bi2Rh_LT	Bi55Rh45: Rh 0.45	experimental	[1] Zobač 2020 cites Kainzbauer 2018	Table 2, p. 3, row 17 report
701.85	Bi2Rh_HT + Bi55Rh45 -> Bi2Rh_LT	Bi2Rh_HT: Rh 0.333; Bi55Rh45: Rh 0.45; Bi2Rh_LT: Rh 0.334	model	[1] Zobač 2020	Table 2, p. 3, row 18 report
699.95	Bi2Rh_HT -> Bi4Rh + Bi2Rh_LT	Bi2Rh_HT: Rh 0.333; Bi4Rh: Rh 0.2; Bi2Rh_LT: Rh 0.334	model	[1] Zobač 2020	Table 2, p. 3, row 20 report
699.15	eutectoid: Bi2Rh_HT -> Bi4Rh + Bi2Rh_LT	Bi4Rh: Rh 0.2	experimental	[1] Zobač 2020 cites Kainzbauer 2018	Table 2, p. 3, row 19 report
698.15	polymorphic: Bi2Rh_HT -> Bi2Rh_LT	Bi2Rh_HT: Rh 0.333; Bi2Rh_LT: Rh 0.333	experimental	[1] Zobač 2020 cites Predel 1992	Table 2, p. 3, row 15 report
643.15	polymorphic: Bi2Rh_HT -> Bi2Rh_LT	Bi2Rh_HT: Rh 0.333; Bi2Rh_LT: Rh 0.333	experimental	[1] Zobač 2020 cites Okamoto 2010 doi	Table 2, p. 3, row 16 report
542.15	eutectic: L -> Bi + Bi4Rh	L: Rh 0.01; Bi: Rh 0; Bi4Rh: Rh 0.2	experimental	[1] Zobač 2020 cites Predel 1992	Table 2, p. 3, row 21 report
540.15	eutectic: L -> Bi + Bi4Rh	L: Rh 0.017; Bi: Rh 0; Bi4Rh: Rh 0.2	model	[1] Zobač 2020	Table 2, p. 3, row 24 report
539.15	eutectic: L -> Bi + Bi4Rh	L: Rh 0.005; Bi: Rh 0; Bi4Rh: Rh 0.2	experimental	[1] Zobač 2020 cites Okamoto 2010 doi	Table 2, p. 3, row 22 report
539.15	eutectic: L -> Bi + Bi4Rh	L: Rh 0.005; Bi: Rh 0; Bi4Rh: Rh 0.2	experimental	[1] Zobač 2020 cites Kainzbauer 2018	Table 2, p. 3, row 23 report

Sources

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

Ondřej Zobač, Aleš Kroupa, The Thermodynamic Assessment of the Binary System Bi-Rh, J. Phase Equilib. Diffus. 41, 900-906 (2020). doi:10.1007/s11669-020-00854-w

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}
}