B–Ni system

45 accepted literature values from 2 paper(s) (experimental 13, model 32); 0 calculated phase diagram(s).

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

Accepted values by evidence class
Evidence class	Values
experimental	13
model	32

Accepted values by property group
Property group	Values
invariant reaction	33
phase transition	3
formation	9

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull NiB-01Tok · CALPHAD hull NiB-03Tok · CALPHAD hull NiB-09Sun · CALPHAD hull NiB-91Pan-LB · CALPHAD hull NiB-99Cam

Invariant reactions (literature)

Invariant reactions reported in the literature for the B–Ni system (33)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1435.15	congruent melting: Ni3B -> L	Ni3B: B 0.25; L: B 0.25	model	[1] Campbell 1999	Table 4, p. 4, row 6 report
1433.15	congruent melting: Ni3B -> L	Ni3B: B 0.25; L: B 0.25	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 4, p. 4, row 5 report
1429.15	congruent melting: Ni3B -> L	Ni3B: B 0.25; L: B 0.25	experimental	[1] Campbell 1999 cites Schobel 1965	Table 4, p. 4, row 4 report
1398.15	congruent melting: Ni2B -> L	Ni2B: B 0.333; L: B 0.333	experimental	[1] Campbell 1999 cites Schobel 1965	Table 4, p. 4, row 10 report
1392.15	congruent melting: Ni2B -> L	Ni2B: B 0.333; L: B 0.333	model	[1] Campbell 1999	Table 4, p. 4, row 12 report
1388.15	eutectic: Ni3B + Ni2B -> L	Ni3B: B 0.25; Ni2B: B 0.333; L: B 0.32	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 4, p. 4, row 8 report
1388.15	eutectic: Ni3B + Ni2B -> L	Ni3B: B 0.25; Ni2B: B 0.333; L: B 0.316	model	[1] Campbell 1999	Table 4, p. 4, row 9 report
1387.15	congruent melting: Ni2B -> L	Ni2B: B 0.333; L: B 0.333	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 4, p. 4, row 11 report
1384.15	eutectic: Ni3B + Ni2B -> L	Ni3B: B 0.25; Ni2B: B 0.333; L: B 0.3	experimental	[1] Campbell 1999 cites Schobel 1965	Table 4, p. 4, row 7 report
1383.15	eutectic: L -> Ni2B + Ni3B	L: Ni 0.68; Ni2B: Ni 0.667; Ni3B: Ni 0.75	model	[2] Cacciamani 2011	Table 2, p. 5, row 3 report
1366.15	eutectic: Ni(γ) + Ni3B -> L	Ni(γ): B 0.003; Ni3B: B 0.25; L: B 0.17	experimental	[1] Campbell 1999 cites Schobel 1965	Table 4, p. 4, row 1 report
1363.15	eutectic: Ni(γ) + Ni3B -> L	Ni(γ): B 0.0029; Ni3B: B 0.25; L: B 0.159	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 4, p. 4, row 2 report
1362.15	eutectic: Ni(γ) + Ni3B -> L	Ni(γ): B 0.00267; Ni3B: B 0.25; L: B 0.162	model	[1] Campbell 1999	Table 4, p. 4, row 3 report
1361.15	eutectic: L -> Ni3B + Ni	L: Ni 0.839; Ni3B: Ni 0.75; Ni: Ni 0.999	model	[2] Cacciamani 2011	Table 2, p. 5, row 4 report
1309.15	peritectic: NiB -> β + L	NiB: B 0.5; β: B 1; L: B 0.485	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 4, p. 4, row 29 report
1308.55	congruent melting: Ni4B3(m) -> L	Ni4B3(m): B 0.436; L: B 0.436	model	[1] Campbell 1999	Table 4, p. 4, row 24 report
1308.15	peritectic: NiB -> β + L	NiB: B 0.5; β: B 1; L: B 0.46	experimental	[1] Campbell 1999 cites Schobel 1965	Table 4, p. 4, row 28 report
1306.15	peritectic: NiB -> β + L	NiB: B 0.5; β: B 1; L: B 0.5	model	[1] Campbell 1999	Table 4, p. 4, row 30 report
1306.15	peritectic: L + B -> NiB	L: Ni 0.5; B: Ni 0; NiB: Ni 0.5	model	[2] Cacciamani 2011	Table 2, p. 5, row 5 report
1304.15	congruent melting: Ni4B3(m) -> L	Ni4B3(m): B 0.436; L: B 0.436	experimental	[1] Campbell 1999 cites Schobel 1965	Table 4, p. 4, row 22 report
1302.39	eutectic: Ni2B + Ni4B3(o) -> L	Ni2B: B 0.333; Ni4B3(o): B 0.414; L: B 0.412	model	[1] Campbell 1999	Table 4, p. 4, row 15 report
1302.36	congruent melting: Ni4B3(o) -> L	Ni4B3(o): B 0.414; L: B 0.414	model	[1] Campbell 1999	Table 4, p. 4, row 18 report
1302.34	eutectic: Ni4B3(o) + Ni4B3(m) -> L	Ni4B3(o): B 0.414; Ni4B3(m): B 0.436; L: B 0.413	model	[1] Campbell 1999	Table 4, p. 4, row 21 report
1300.15	congruent melting: Ni4B3(m) -> L	Ni4B3(m): B 0.436; L: B 0.436	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 4, p. 4, row 23 report
1300.15	eutectic: Ni2B + Ni4B3(o) -> L	Ni2B: B 0.333; Ni4B3(o): B 0.414; L: B 0.408	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 4, p. 4, row 14 report
1300.15	congruent melting: Ni4B3(o) -> L	Ni4B3(o): B 0.414; L: B 0.414	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 4, p. 4, row 17 report
1299.15	congruent melting: Ni4B3(o) -> L	Ni4B3(o): B 0.414; L: B 0.414	experimental	[1] Campbell 1999 cites Schobel 1965	Table 4, p. 4, row 16 report
1298.15	eutectic: Ni4B3(o) + Ni4B3(m) -> L	Ni4B3(o): B 0.414; Ni4B3(m): B 0.436; L: B 0.43	experimental	[1] Campbell 1999 cites Schobel 1965	Table 4, p. 4, row 19 report
1296.15	eutectic: Ni4B3(m) + NiB -> L	Ni4B3(m): B 0.436; NiB: B 0.5; L: B 0.468	model	[1] Campbell 1999	Table 4, p. 4, row 27 report
1294.15	eutectic: Ni4B3(o) + Ni4B3(m) -> L	Ni4B3(o): B 0.414; Ni4B3(m): B 0.436; L: B 0.415	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 4, p. 4, row 20 report
1292.15	eutectic: Ni2B + Ni4B3(o) -> L	Ni2B: B 0.333; Ni4B3(o): B 0.414; L: B 0.395	experimental	[1] Campbell 1999 cites Schobel 1965	Table 4, p. 4, row 13 report
1291.15	eutectic: Ni4B3(m) + NiB -> L	Ni4B3(m): B 0.436; NiB: B 0.5; L: B 0.453	experimental	[1] Campbell 1999 cites Schobel 1965	Table 4, p. 4, row 25 report
1285.15	eutectic: Ni4B3(m) + NiB -> L	Ni4B3(m): B 0.436; NiB: B 0.5; L: B 0.45	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 4, p. 4, row 26 report

Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from dft_parity.json.

Enthalpies of formation, B–Ni system (9)
Phase	Value	T (K)	Class	Source	Location
Ni2B	-27 kJ/mol (basis unstated)	298.15	model	[1] Campbell 1999 cites Niessen 1983 doi	Table 8, p. 8, row 3 report
Ni2B	-26.7 kJ/mol (basis unstated)	298.15	model	[1] Campbell 1999	Table 8, p. 8, row 4 report
Ni2B	-22.6 kJ/mol (basis unstated) ± 1.4	298.15	experimental	[1] Campbell 1999 cites Sato 1982 doi	Table 8, p. 8, row 1 report
Ni2B	-21.13 kJ/mol (basis unstated)	298.15	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 8, p. 8, row 5 report
NiB	-50.2 kJ/mol (basis unstated) ± 6.3	298.15	experimental	[1] Campbell 1999 cites Gorelkin 1972	Table 8, p. 8, row 2 report
NiB	-33 kJ/mol (basis unstated)	298.15	model	[1] Campbell 1999 cites Niessen 1983 doi	Table 8, p. 8, row 3 report
NiB	-25.8 kJ/mol (basis unstated)	298.15	model	[1] Campbell 1999	Table 8, p. 8, row 4 report
NiB	-23.43 kJ/mol (basis unstated)	298.15	model	[1] Campbell 1999 cites Teppo 1993 doi	Table 8, p. 8, row 5 report
NiB	-20.1 kJ/mol (basis unstated) ± 2.8	298.15	experimental	[1] Campbell 1999 cites Sato 1982 doi	Table 8, p. 8, row 1 report

Other properties

Phase transition (3)

Phase transition, B–Ni system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1298.15 K	1298.15	congruent melting: L -> m–Ni4B3 L: Ni 0.565; m–Ni4B3: Ni 0.565	model	[2] Cacciamani 2011	Table 2, p. 5, row 6 report
Phase transition	1385.15 K	1385.15	congruent melting: L -> Ni2B L: Ni 0.667; Ni2B: Ni 0.667	model	[2] Cacciamani 2011	Table 2, p. 5, row 2 report
Phase transition	1435.15 K	1435.15	congruent melting: L -> Ni3B L: Ni 0.75; Ni3B: Ni 0.75	model	[2] Cacciamani 2011	Table 2, p. 5, row 1 report

Sources

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

C. E. Campbell, U. R. Kattner, A thermodynamic assessment of the Ni-Al-B system, JPE 20, 485-496 (1999). doi:10.1361/105497199770340743
G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011). doi:10.1016/j.calphad.2011.10.003

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-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); 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); 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. 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_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}
}