B–Sc system

34 accepted literature values from 2 paper(s) (experimental 7, model 12, unspecified 15); 0 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 · phases (7) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	7
model	12
unspecified	15

Accepted values by property group
Property group	Values
invariant reaction	13
phase transition	8
crystal structure	13

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull ScB-90Spe-LB

Invariant reactions (literature)

Invariant reactions reported in the literature for the B–Sc system (13)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
2523.15	congruent melting: L -> ScB2	ScB2: B 0.67	unspecified	[1] Spear 1990 cites ref. 60Sam	Table I, p. 1, row 4 report
2365.15	congruent melting: L -> βB	βB: B 1	model	[1] Spear 1990	Table I, p. 1, row 8 report
2313.15	congruent melting: L -> ScB12	ScB12: B 0.92	experimental	[1] Spear 1990 cites Peshev 1976	Table I, p. 1, row 6 report
2279.05	eutectic: L -> βB + ScB12	L: B 0.959; βB: B 0.984; ScB12: B 0.923	model	[2] Liu 2009	Table 5, p. 5, row 4 report
2276.15	eutectic: L -> ScB12 + (βB)	L: B 0.96; ScB12: B 0.92; (βB): B 0.965	model	[1] Spear 1990	Table I, p. 1, row 7 report
2276.15	eutectic: L -> βB + ScB12	L: B 0.96; βB: B 0.965; ScB12: B 0.923	unspecified	[2] Liu 2009 cites Callmer 1978 doi	Table 5, p. 5, row 3 report
2150.15	eutectic: L -> ScB2 + ScB12	L: B 0.83; ScB2: B 0.667; ScB12: B 0.923	experimental	[2] Liu 2009 cites Spear 1990 doi	Table 5, p. 5, row 7 report
2150.15	eutectic: L -> ScB2 + ScB12	L: B 0.83; ScB2: B 0.67; ScB12: B 0.92	model	[1] Spear 1990	Table I, p. 1, row 5 report
2144.75	eutectic: L -> ScB2 + ScB12	L: B 0.831; ScB2: B 0.667; ScB12: B 0.923	model	[2] Liu 2009	Table 5, p. 5, row 8 report
1814.15	congruent melting: L -> βSc	βSc: B 0	model	[1] Spear 1990	Table I, p. 1, row 1 report
1551.05	eutectic: L -> ScB2 + αSc	L: B 0.176; ScB2: B 0.667; αSc: B 0	model	[2] Liu 2009	Table 5, p. 5, row 12 report
1550.15	eutectic: L -> ScB2 + αSc	L: B 0.17; ScB2: B 0.667; αSc: B 0	experimental	[2] Liu 2009 cites Spear 1990 doi	Table 5, p. 5, row 11 report
1550.15	eutectic: L -> (αSc) + ScB2	L: B 0.17; ScB2: B 0.67	model	[1] Spear 1990	Table I, p. 1, row 3 report

Other properties

Phase transition (8)

Phase transition, B–Sc system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1814.15 K	1814.15	congruent melting: L -> βSc βSc: B 0	model	[2] Liu 2009	Table 5, p. 5, row 16 report
Phase transition	1814.15 K	1814.15	congruent melting: L -> βSc βSc: B 0	experimental	[2] Liu 2009 cites Spear 1990 doi	Table 5, p. 5, row 15 report
Phase transition	2313.15 K	2313.15	congruent melting: L -> ScB12 L: B 0.923; ScB12: B 0.923	experimental	[2] Liu 2009 cites Peshev 1970 doi	Table 5, p. 5, row 5 report
Phase transition	2315.75 K	2315.75	congruent melting: L -> ScB12 L: B 0.923; ScB12: B 0.923	model	[2] Liu 2009	Table 5, p. 5, row 6 report
Phase transition	2365.15 K	2365.15	congruent melting: L -> βB βB: B 1	model	[2] Liu 2009	Table 5, p. 5, row 2 report
Phase transition	2365.15 K	2365.15	congruent melting: L -> βB βB: B 1	experimental	[2] Liu 2009 cites Spear 1990 doi	Table 5, p. 5, row 1 report
Phase transition	2523.15 K	2523.15	congruent melting: L -> ScB2 L: B 0.667; ScB2: B 0.667	experimental	[2] Liu 2009 cites Samsonov 1965	Table 5, p. 5, row 9 report
Phase transition	2523.35 K	2523.35	congruent melting: L -> ScB2 L: B 0.667; ScB2: B 0.667	model	[2] Liu 2009	Table 5, p. 5, row 10 report

Crystal structure (13)

Crystal structure, B–Sc system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	10.962 Å	298.15	(βB)(a) alloy: B 0.965, Sc 0.035	unspecified	[1] Spear 1990	Table 3, p. 3, row 9 report
Lattice a	10.966 Å	298.15	(βB)(a) (βB)(a): B 0.965, Sc 0.035	unspecified	[1] Spear 1990	Table 3, p. 3, row 8 report
Lattice a	5.22 Å	298.15	ScB12 ScB12: B 0.92, Sc 0.08	unspecified	[1] Spear 1990	Table 3, p. 3, row 6 report
Lattice a	5.2347 Å	298.15	ScB12 ScB12: B 0.92, Sc 0.08	unspecified	[1] Spear 1990	Table 3, p. 3, row 7 report
Lattice a	3.148 Å	298.15	ScB2 ScB2: B 0.67, Sc 0.33	unspecified	[1] Spear 1990	Table 3, p. 3, row 3 report
Lattice a	3.146 Å	298.15	ScB2 ScB2: B 0.67, Sc 0.33	unspecified	[1] Spear 1990	Table 3, p. 3, row 4 report
Lattice c	24.075 Å	298.15	(βB)(a) alloy: Sc 0	unspecified	[1] Spear 1990	Table 3, p. 3, row 9 report
Lattice c	24.088 Å	298.15	(βB)(a) (βB)(a): B 0.965, Sc 0.035	unspecified	[1] Spear 1990	Table 3, p. 3, row 8 report
Lattice c	7.35 Å	298.15	ScB12 ScB12: B 0.92, Sc 0.08	unspecified	[1] Spear 1990	Table 3, p. 3, row 6 report
Lattice c	7.3583 Å	298.15	ScB12 ScB12: B 0.92, Sc 0.08	unspecified	[1] Spear 1990	Table 3, p. 3, row 7 report
Lattice c	3.516 Å	298.15	ScB2 ScB2: B 0.67, Sc 0.33	unspecified	[1] Spear 1990	Table 3, p. 3, row 3 report
Lattice c	3.517 Å	298.15	ScB2 ScB2: B 0.67, Sc 0.33	unspecified	[1] Spear 1990	Table 3, p. 3, row 4 report
Lattice c	3.518 Å	298.15	ScB2 ScB2: B 0.67, Sc 0.33	unspecified	[1] Spear 1990	Table 3, p. 3, row 5 report

Sources

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

K. E. Spear, P. K. Liao, The B-Sc (Boron-Scandium) system, Bulletin of Alloy Phase Diagrams 11, 321-324 (1990). doi:10.1007/bf02843307
X.J. Liu, S.L. Wang, C.P. Wang, Thermodynamic assessments of the Sc–M (M: Ag, B and Th) systems, Journal of Alloys and Compounds 469, 186-192 (2009). doi:10.1016/j.jallcom.2008.02.018

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}
}