B–Pr system

39 accepted literature values from 2 paper(s) (experimental 19, model 20); 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 (10) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	19
model	20

Accepted values by property group
Property group	Values
invariant reaction	31
phase transition	8

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull PrB-13Wan

Invariant reactions (literature)

Invariant reactions reported in the literature for the B–Pr system (31)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
2883	congruent melting: liq. -> PrB6	liq.: B 0.857143, Pr 0.142857; PrB6: B 0.857143, Pr 0.142857	experimental	[1] Chen 2020 cites Spear 1977	Table 4, p. 9, row 2 report
2883	congruent melting: liq. -> PrB6	liq.: B 0.8577; PrB6: B 0.857143, Pr 0.142857	model	[1] Chen 2020	Table 4, p. 9, row 1 report
2883	congruent melting: liq. -> PrB6	liq.: B 0.857; PrB6: B 0.857143, Pr 0.142857	model	[1] Chen 2020 cites Wang 2013 doi	Table 4, p. 9, row 3 report
2623.25	peritectic: L+B6Pr↔B4Pr	L: B 0.753; B6Pr: B 0.857; B4Pr: B 0.8	model	[2] Wang 2013	Table 5, p. 5, row 13 report
2623.15	peritectic: L+B6Pr↔B4Pr	L: B 0.74; B6Pr: B 0.857; B4Pr: B 0.8	experimental	[2] Wang 2013 cites Spear 1976	Table 5, p. 5, row 11 report
2623.15	peritectic: L+B6Pr↔B4Pr	L: B 0.75; B6Pr: B 0.857; B4Pr: B 0.8	experimental	[2] Wang 2013 cites Moffatt 1976	Table 5, p. 5, row 12 report
2623	peritectic: liq. + PrB6 -> PrB4	liq.: B 0.753; PrB6: B 0.857143, Pr 0.142857; PrB4: B 0.8, Pr 0.2	model	[1] Chen 2020 cites Wang 2013 doi	Table 4, p. 9, row 6 report
2623	peritectic: liq. + PrB6 -> PrB4	PrB6: B 0.857143, Pr 0.142857; PrB4: B 0.8, Pr 0.2	experimental	[1] Chen 2020 cites Spear 1977	Table 4, p. 9, row 5 report
2623	peritectic: liq. + PrB6 -> PrB4	liq.: B 0.5935; PrB6: B 0.857143, Pr 0.142857; PrB4: B 0.8, Pr 0.2	model	[1] Chen 2020	Table 4, p. 9, row 4 report
2343.15	peritectic: L+B4Pr↔B5Pr2	L: B 0.66; B4Pr: B 0.8; B5Pr2: B 0.714	model	[2] Wang 2013	Table 5, p. 5, row 10 report
2343	peritectic: liq. + PrB4 -> Pr2B5	liq.: B 0.3284; PrB4: B 0.8, Pr 0.2; Pr2B5: B 0.714286, Pr 0.285714	model	[1] Chen 2020	Table 4, p. 9, row 7 report
2343	peritectic: liq. + PrB4 -> Pr2B5	liq.: B 0.66; PrB4: B 0.8, Pr 0.2; Pr2B5: B 0.714286, Pr 0.285714	model	[1] Chen 2020 cites Wang 2013 doi	Table 4, p. 9, row 8 report
2342	eutectic: liq. -> PrB6 + rhombo(B)	liq.: B 0.9943; PrB6: B 0.857143, Pr 0.142857	model	[1] Chen 2020	Table 4, p. 9, row 9 report
2300.35	eutectic: L↔B6Pr+(βB)	L: B 0.978; B6Pr: B 0.857; (βB): B 1	model	[2] Wang 2013	Table 5, p. 5, row 19 report
2300	eutectic: liq. -> PrB6 + rhombo(B)	liq.: B 0.978; PrB6: B 0.857143, Pr 0.142857	model	[1] Chen 2020 cites Wang 2013 doi	Table 4, p. 9, row 11 report
2298.15	eutectic: L↔B6Pr+(βB)	L: B 0.981; B6Pr: B 0.857; (βB): B 1	experimental	[2] Wang 2013 cites Moffatt 1976	Table 5, p. 5, row 18 report
2298.15	eutectic: L↔B6Pr+(βB)	B6Pr: B 0.857; (βB): B 1	experimental	[2] Wang 2013 cites Spear 1976	Table 5, p. 5, row 17 report
2298	eutectic: liq. -> PrB6 + rhombo(B)	PrB6: B 0.857143, Pr 0.142857	experimental	[1] Chen 2020 cites Spear 1977	Table 4, p. 9, row 10 report
2273.15	peritectic: L+B4Pr↔B5Pr2	L: B 0.66; B4Pr: B 0.807; B5Pr2: B 0.72	experimental	[2] Wang 2013 cites Spear 1976	Table 5, p. 5, row 9 report
1187	eutectic: liq. -> Pr2B5 + bcc(Pr)	liq.: B 0.01; Pr2B5: B 0.714286, Pr 0.285714	model	[1] Chen 2020 cites Wang 2013 doi	Table 4, p. 9, row 14 report
1186.65	eutectic: L↔(βPr)+B5Pr2	L: B 0.01; (βPr): B 0; B5Pr2: B 0.714	model	[2] Wang 2013	Table 5, p. 5, row 8 report
1183.15	eutectic: L↔(βPr)+B5Pr2	L: B 0.01; (βPr): B 0; B5Pr2: B 0.72	experimental	[2] Wang 2013 cites Spear 1976	Table 5, p. 5, row 6 report
1183.15	eutectic: L↔(βPr)+B5Pr2	L: B 0.01; (βPr): B 0; B5Pr2: B 0.714	experimental	[2] Wang 2013 cites Moffatt 1976	Table 5, p. 5, row 7 report
1183	eutectic: liq. -> Pr2B5 + bcc(Pr)	Pr2B5: B 0.714286, Pr 0.285714	experimental	[1] Chen 2020 cites Spear 1977	Table 4, p. 9, row 13 report
1183	eutectic: liq. -> Pr2B5 + bcc(Pr)	liq.: B 0.0125; Pr2B5: B 0.714286, Pr 0.285714	model	[1] Chen 2020	Table 4, p. 9, row 12 report
1068.15	peritectic: L+(βPr)↔(αPr)	L: B 0.001; (βPr): B 0; (αPr): B 0	experimental	[2] Wang 2013 cites Spear 1976	Table 5, p. 5, row 3 report
1068.15	peritectic: L+(βPr)↔(αPr)	L: B 0; (αPr): B 0	experimental	[2] Wang 2013 cites Moffatt 1976	Table 5, p. 5, row 4 report
1068	eutectoid: bcc(Pr) -> Pr2B5 + dhcp(Pr)	bcc(Pr): B 0; Pr2B5: B 0.714286, Pr 0.285714	model	[1] Chen 2020 cites Wang 2013 doi	Table 4, p. 9, row 17 report
1068	eutectoid: bcc(Pr) -> Pr2B5 + dhcp(Pr)	Pr2B5: B 0.714286, Pr 0.285714	experimental	[1] Chen 2020 cites Spear 1977	Table 4, p. 9, row 16 report
1068	eutectoid: bcc(Pr) -> Pr2B5 + dhcp(Pr)	bcc(Pr): B 0; Pr2B5: B 0.714286, Pr 0.285714	model	[1] Chen 2020	Table 4, p. 9, row 15 report
1067.95	peritectic: L+(βPr)↔(αPr)	L: B 0; (βPr): B 0; (αPr): B 0	model	[2] Wang 2013	Table 5, p. 5, row 5 report

Other properties

Phase transition (8)

Phase transition, B–Pr system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1204.15 K	1204.15	congruent melting: L↔(βPr) (βPr): B 0	model	[2] Wang 2013	Table 5, p. 5, row 2 report
Phase transition	1204.15 K	1204.15	congruent melting: L↔(βPr) (βPr): B 0	experimental	[2] Wang 2013 cites Moffatt 1976	Table 5, p. 5, row 1 report
Phase transition	2348.15 K	2348.15	congruent melting: L↔(βB) (βB): B 1	model	[2] Wang 2013	Table 5, p. 5, row 22 report
Phase transition	2365.15 K	2365.15	congruent melting: L↔(βB) (βB): B 1	experimental	[2] Wang 2013 cites Spear 1976	Table 5, p. 5, row 20 report
Phase transition	2365.15 K	2365.15	congruent melting: L↔(βB) (βB): B 1	experimental	[2] Wang 2013 cites Moffatt 1976	Table 5, p. 5, row 21 report
Phase transition	2883.15 K	2883.15	congruent melting: L↔B6Pr L: B 0.857; B6Pr: B 0.857	model	[2] Wang 2013	Table 5, p. 5, row 16 report
Phase transition	2883.15 K	2883.15	congruent melting: L↔B6Pr L: B 0.857; B6Pr: B 0.857	experimental	[2] Wang 2013 cites Moffatt 1976	Table 5, p. 5, row 15 report
Phase transition	2883.15 K	2883.15	congruent melting: L↔B6Pr L: B 0.857; B6Pr: B 0.857	experimental	[2] Wang 2013 cites Spear 1976	Table 5, p. 5, row 14 report

Sources

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

Taili Chen, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Pr–Fe–B system, Journal of Magnetism and Magnetic Materials 497, 165983 (2020). doi:10.1016/j.jmmm.2019.165983
C.P. Wang, Y. Shi, D. Wang, Y. Lu, D.L. Zhao, X.J. Liu, Thermodynamic assessment of the B–Ce and B–Pr systems, Calphad 41, 150-155 (2013). doi:10.1016/j.calphad.2013.03.001

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}
}