Ni–P system

16 accepted literature values from 1 paper(s) (experimental 8, unspecified 8); 3 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 · interactive phase diagram · phases (14) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	8
unspecified	8

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

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
NiP-15Mie.tdb	J. Miettinen, G. Vassilev, J. Phase Equilib. Diffus, 36, 78-87(2015). doi:10.1007/s11669-014-0358-y	`a366279c70ac4520bba4a362c4c3d9245a91a7905449acf2455094ccdd3f475b`	viewer · TDB · JSON
NiP-89NPL.tdb	NPL, unpublished, 1989.	`4b112c50bbb75441124d6d00b1f520139050007582bb2ae91c5801492f156c4a`	viewer · TDB · JSON
NiP-99Shi.tdb	J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). doi:10.1016/S0925-8388(98)00826-3	`1e721e0ac49254b22b5bcd7b32e583deed4f0848b8df4878841660f5ae2bbe33`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
NiP-15Mie.tdb	1395.6	NI5P2_H (x(P) 0.28571) + NI12P5_H (x(P) 0.29412) + LIQUID (x(P) 0.31134)
NiP-15Mie.tdb	1370.2	NI12P5_H (x(P) 0.29412) + LIQUID (x(P) 0.32056) + M2P_C22 (x(P) 0.33333)
NiP-15Mie.tdb	1301.28	LIQUID (x(P) 0.24235) + NI5P2_L (x(P) 0.28571) + NI5P2_H (x(P) 0.28571)
NiP-15Mie.tdb	1301.28	NI5P2_H (x(P) 0.28571) + NI5P2_L (x(P) 0.28571) + NI12P5_H (x(P) 0.29412)
NiP-15Mie.tdb	1273.85	NI12P5_H (x(P) 0.29412) + NI12P5_L (x(P) 0.29412) + M2P_C22 (x(P) 0.33333)
NiP-15Mie.tdb	1273.85	NI5P2_L (x(P) 0.28571) + NI12P5_H (x(P) 0.29412) + NI12P5_L (x(P) 0.29412)
NiP-15Mie.tdb	1237.41	LIQUID (x(P) 0.22459) + M3P_D0E (x(P) 0.25) + NI5P2_L (x(P) 0.28571)
NiP-15Mie.tdb	1237.41	LIQUID (x(P) 0.22476) + M3P_D0E (x(P) 0.25) + NI5P2_L (x(P) 0.28571)
NiP-15Mie.tdb	1148.73	FCC_A1 (x(P) 0.00305) + LIQUID (x(P) 0.18512) + M3P_D0E (x(P) 0.25)
NiP-15Mie.tdb	1148.73	FCC_A1 (x(P) 0.00305) + LIQUID (x(P) 0.18509) + M3P_D0E (x(P) 0.25)
NiP-89NPL.tdb	1364.08	NI5P2_H (x(P) 0.28571) + LIQUID (x(P) 0.31249) + M2P_C22 (x(P) 0.33333)
NiP-89NPL.tdb	1344.54	NI5P2_H (x(P) 0.28571) + NI12P5 (x(P) 0.29412) + M2P_C22 (x(P) 0.33333)
NiP-89NPL.tdb	1307.84	LIQUID (x(P) 0.25) + NI5P2_H (x(P) 0.28571) + NI12P5 (x(P) 0.29412)
NiP-89NPL.tdb	1307.84	LIQUID (x(P) 0.24996) + NI5P2_H (x(P) 0.28571) + NI12P5 (x(P) 0.29412)
NiP-89NPL.tdb	1285.67	LIQUID (x(P) 0.24152) + NI5P2_L (x(P) 0.28571) + NI12P5 (x(P) 0.29412)
NiP-89NPL.tdb	1285.67	LIQUID (x(P) 0.24147) + NI5P2_L (x(P) 0.28571) + NI12P5 (x(P) 0.29412)
NiP-89NPL.tdb	1285.67	LIQUID (x(P) 0.24143) + NI5P2_L (x(P) 0.28571) + NI12P5 (x(P) 0.29412)
NiP-89NPL.tdb	1233.57	LIQUID (x(P) 0.22024) + M3P_D0E (x(P) 0.25) + NI5P2_L (x(P) 0.28571)
NiP-89NPL.tdb	1233.57	LIQUID (x(P) 0.22049) + M3P_D0E (x(P) 0.25) + NI5P2_L (x(P) 0.28571)
NiP-89NPL.tdb	1233.57	LIQUID (x(P) 0.22021) + M3P_D0E (x(P) 0.25) + NI5P2_L (x(P) 0.28571)
NiP-89NPL.tdb	1156.78	FCC_A1 (x(P) 0.00302) + LIQUID (x(P) 0.18137) + M3P_D0E (x(P) 0.25)
NiP-89NPL.tdb	1156.78	FCC_A1 (x(P) 0.00302) + LIQUID (x(P) 0.18135) + M3P_D0E (x(P) 0.25)
NiP-89NPL.tdb	1093.75	M2P_C22 (x(P) 0.33333) + LIQUID (x(P) 0.41246) + NI6P5 (x(P) 0.45455)
NiP-89NPL.tdb	1014.77	NI5P2_L (x(P) 0.28571) + NI12P5 (x(P) 0.29412) + M2P_C22 (x(P) 0.33333)
NiP-89NPL.tdb	548.56	NI5P2_L (x(P) 0.28571) + M2P_C22 (x(P) 0.33333) + NI6P5 (x(P) 0.45455)
NiP-99Shi.tdb	1423.3	NI5P2_H (x(P) 0.286) + NI12P5_H (x(P) 0.294) + LIQUID (x(P) 0.29901)
NiP-99Shi.tdb	1369.37	NI12P5_H (x(P) 0.294) + LIQUID (x(P) 0.32034) + M2P_C22 (x(P) 0.33333)
NiP-99Shi.tdb	1298.7	LIQUID (x(P) 0.24095) + NI5P2_L (x(P) 0.286) + NI5P2_H (x(P) 0.286)
NiP-99Shi.tdb	1298.7	NI5P2_H (x(P) 0.286) + NI5P2_L (x(P) 0.286) + NI12P5_H (x(P) 0.294)
NiP-99Shi.tdb	1273.89	NI12P5_H (x(P) 0.294) + NI12P5_L (x(P) 0.294) + M2P_C22 (x(P) 0.33333)
NiP-99Shi.tdb	1273.89	NI5P2_L (x(P) 0.286) + NI12P5_H (x(P) 0.294) + NI12P5_L (x(P) 0.294)
NiP-99Shi.tdb	1247.32	LIQUID (x(P) 0.23242) + M3P_D0E (x(P) 0.25) + NI5P2_L (x(P) 0.286)
NiP-99Shi.tdb	1247.32	LIQUID (x(P) 0.2323) + M3P_D0E (x(P) 0.25) + NI5P2_L (x(P) 0.286)
NiP-99Shi.tdb	1141.02	FCC_A1 (x(P) 0.00337) + LIQUID (x(P) 0.19048) + M3P_D0E (x(P) 0.25)
NiP-99Shi.tdb	1141.02	FCC_A1 (x(P) 0.00337) + LIQUID (x(P) 0.19043) + M3P_D0E (x(P) 0.25)
NiP-99Shi.tdb	425.36	M3P_D0E (x(P) 0.25) + NI5P2_L (x(P) 0.286) + NI12P5_L (x(P) 0.294)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull NiP-89NPL · CALPHAD hull NiP-99Shi

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ni–P system (8)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1399	βNi5P2 + liquid = δNi12P5	βNi5P2: P 0.286; liquid: P 0.311; δNi12P5: P 0.294	unspecified	[1] Shim 1999	Table 2, p. 4, row 9 report
1398	βNi5P2 + liquid = δNi12P5	βNi5P2: P 0.285714; δNi12P5: P 0.294118	experimental	[1] Shim 1999 cites Lee 1991	Table 2, p. 4, row 10 report
1373	Liquid = δNi12P5 + Ni2P	Liquid: P 0.31; δNi12P5: P 0.294118; Ni2P: P 0.333333	experimental	[1] Shim 1999 cites Lee 1991	Table 2, p. 4, row 14 report
1368	Liquid = δNi12P5 + Ni2P	Liquid: P 0.32; δNi12P5: P 0.294; Ni2P: P 0.333	unspecified	[1] Shim 1999	Table 2, p. 4, row 13 report
1244	Liquid + αNi5P2 = Ni3P	Liquid: P 0.23; αNi5P2: P 0.286; Ni3P: P 0.25	unspecified	[1] Shim 1999	Table 2, p. 4, row 3 report
1243	Liquid + αNi5P2 = Ni3P	Liquid: P 0.235; αNi5P2: P 0.285714; Ni3P: P 0.25	experimental	[1] Shim 1999 cites Lee 1991	Table 2, p. 4, row 4 report
1143	Liquid = f.c.c. + Ni3P	Liquid: P 0.19; f.c.c.: P 0.0032; Ni3P: P 0.25	experimental	[1] Shim 1999 cites Lee 1991	Table 2, p. 4, row 2 report
1141	Liquid = f.c.c. + Ni3P	Liquid: P 0.19; f.c.c.: P 0.0032; Ni3P: P 0.25	unspecified	[1] Shim 1999	Table 2, p. 4, row 1 report

Other properties

Phase transition (8)

Phase transition, Ni–P system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1273 K	1273	δNi12P5 = γNi12P5 δNi12P5: P 0.294118; γNi12P5: P 0.294118	experimental	[1] Shim 1999 cites Lee 1991	Table 2, p. 4, row 12 report
Phase transition	1273 K	1273	δNi12P5 = γNi12P5 δNi12P5: P 0.294; γNi12P5: P 0.294118	unspecified	[1] Shim 1999	Table 2, p. 4, row 11 report
Phase transition	1298 K	1298	βNi5P2 = αNi5P2 βNi5P2: P 0.285714; αNi5P2: P 0.285714	experimental	[1] Shim 1999 cites Lee 1991	Table 2, p. 4, row 8 report
Phase transition	1298 K	1298	βNi5P2 = αNi5P2 βNi5P2: P 0.286; αNi5P2: P 0.285714	unspecified	[1] Shim 1999	Table 2, p. 4, row 7 report
Phase transition	1383 K	1383	Liquid = Ni2P Ni2P: P 0.333	experimental	[1] Shim 1999 cites Lee 1991	Table 2, p. 4, row 16 report
Phase transition	1387 K	1387	Liquid = Ni2P Ni2P: P 0.333	unspecified	[1] Shim 1999	Table 2, p. 4, row 15 report
Phase transition	1443 K	1443	Liquid = βNi5P2 βNi5P2: P 0.285714	experimental	[1] Shim 1999 cites Lee 1991	Table 2, p. 4, row 6 report
Phase transition	1446 K	1446	Liquid = βNi5P2 βNi5P2: P 0.286	unspecified	[1] Shim 1999	Table 2, p. 4, row 5 report

Sources

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

Jae-Hyeok Shim, Hun-Jae Chung, Dong Nyung Lee, Calculation of phase equilibria and evaluation of glass-forming ability of Ni–P alloys, Journal of Alloys and Compounds 282, 175-181 (1999). doi:10.1016/s0925-8388(98)00826-3

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}
}