Al–Pt system

44 accepted literature values from 1 paper(s) (experimental 10, model 34); 2 calculated phase diagram(s). 33 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	10
model	34

Accepted values by property group
Property group	Values
invariant reaction	15
phase transition	6
crystal structure	23

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
AlPt-00Wu.tdb	K. Wu, Z. Jin, J. Phase Equilib., 21, 221-26(2000). doi:10.1361/105497100770340011	`ff7e2a521050dadbd49c60beb539c345c2e43ccec440c7dfb4d82f331b890d40`	viewer · TDB · JSON
AlPt-16Liu.tdb	X.L. Liu, G. Lindwall, R. Otis, H.Kim, Z.-K. Liu, Calphad, 55, 88-102(2016). doi:10.1016/j.calphad.2016.08.002	`98460d9947af8257d6bbb5cc65eb642767b26b2dc42544ab8cd8fd73b752e833`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AlPt-00Wu.tdb	1766.41	AL3PT2_D513 (x(Pt) 0.4) + LIQUID (x(Pt) 0.44062) + ALPT_B20 (x(Pt) 0.5)
AlPt-00Wu.tdb	1766.41	AL3PT2_D513 (x(Pt) 0.4) + LIQUID (x(Pt) 0.44047) + ALPT_B20 (x(Pt) 0.5)
AlPt-00Wu.tdb	1766.41	AL3PT2_D513 (x(Pt) 0.4) + LIQUID (x(Pt) 0.44069) + ALPT_B20 (x(Pt) 0.5)
AlPt-00Wu.tdb	1764.92	ALPT3_L12 (x(Pt) 0.75) + LIQUID (x(Pt) 0.79645) + FCC_A1 (x(Pt) 0.81759)
AlPt-00Wu.tdb	1764.92	ALPT3_L12 (x(Pt) 0.75) + LIQUID (x(Pt) 0.79656) + FCC_A1 (x(Pt) 0.81769)
AlPt-00Wu.tdb	1695.72	ALPT_B20 (x(Pt) 0.5) + LIQUID (x(Pt) 0.58188) + AL3PT5 (x(Pt) 0.625)
AlPt-00Wu.tdb	1679.96	AL3PT5 (x(Pt) 0.625) + LIQUID (x(Pt) 0.67388) + ALPT3_L12 (x(Pt) 0.74983)
AlPt-00Wu.tdb	1677.09	LIQUID (x(Pt) 0.31238) + AL2PT_C1 (x(Pt) 0.33333) + AL3PT2_D513 (x(Pt) 0.4)
AlPt-00Wu.tdb	1677.09	LIQUID (x(Pt) 0.31259) + AL2PT_C1 (x(Pt) 0.33333) + AL3PT2_D513 (x(Pt) 0.4)
AlPt-00Wu.tdb	1400.12	LIQUID (x(Pt) 0.17564) + AL21PT8 (x(Pt) 0.27586) + AL2PT_C1 (x(Pt) 0.33333)
AlPt-00Wu.tdb	1400.12	LIQUID (x(Pt) 0.17586) + AL21PT8 (x(Pt) 0.27586) + AL2PT_C1 (x(Pt) 0.33333)
AlPt-00Wu.tdb	1400.11	LIQUID (x(Pt) 0.17572) + AL21PT8 (x(Pt) 0.27586) + AL2PT_C1 (x(Pt) 0.33333)
AlPt-00Wu.tdb	1082.2	LIQUID (x(Pt) 0.0471) + AL21PT5 (x(Pt) 0.19231) + AL21PT8 (x(Pt) 0.27586)
AlPt-00Wu.tdb	1082.2	LIQUID (x(Pt) 0.04711) + AL21PT5 (x(Pt) 0.19231) + AL21PT8 (x(Pt) 0.27586)
AlPt-00Wu.tdb	1082.2	LIQUID (x(Pt) 0.04703) + AL21PT5 (x(Pt) 0.19231) + AL21PT8 (x(Pt) 0.27586)
AlPt-00Wu.tdb	928.07	FCC_A1 (x(Pt) 7.000e-5) + LIQUID (x(Pt) 0.00767) + AL21PT5 (x(Pt) 0.19231)
AlPt-00Wu.tdb	928.07	FCC_A1 (x(Pt) 7.000e-5) + LIQUID (x(Pt) 0.00761) + AL21PT5 (x(Pt) 0.19231)
AlPt-16Liu.tdb	1820.68	FCC_4SL#2 (x(Pt) 0.7633) + LIQUID (x(Pt) 0.81515) + FCC_4SL (x(Pt) 0.87074)
AlPt-16Liu.tdb	1820.68	FCC_4SL (x(Pt) 0.7633) + LIQUID (x(Pt) 0.81515) + FCC_4SL#2 (x(Pt) 0.87074)
AlPt-16Liu.tdb	1820.68	FCC_4SL (x(Pt) 0.7633) + LIQUID (x(Pt) 0.81515) + FCC_4SL#2 (x(Pt) 0.87074)
AlPt-16Liu.tdb	1762.63	AL3PT2_D513 (x(Pt) 0.4) + LIQUID (x(Pt) 0.43654) + B2_BCC (x(Pt) 0.49818)
AlPt-16Liu.tdb	1762.63	AL3PT2_D513 (x(Pt) 0.4) + LIQUID (x(Pt) 0.43654) + B2_BCC (x(Pt) 0.49818)
AlPt-16Liu.tdb	1701.88	AL3PT5 (x(Pt) 0.625) + LIQUID (x(Pt) 0.6296) + FCC_4SL (x(Pt) 0.72612)
AlPt-16Liu.tdb	1701.88	AL3PT5 (x(Pt) 0.625) + LIQUID (x(Pt) 0.6296) + FCC_4SL (x(Pt) 0.72612)
AlPt-16Liu.tdb	1700.35	B2_BCC (x(Pt) 0.55566) + LIQUID (x(Pt) 0.61176) + AL3PT5 (x(Pt) 0.625)
AlPt-16Liu.tdb	1654.35	LIQUID (x(Pt) 0.28976) + AL2PT_C1 (x(Pt) 0.33333) + AL3PT2_D513 (x(Pt) 0.4)
AlPt-16Liu.tdb	1654.35	LIQUID (x(Pt) 0.29006) + AL2PT_C1 (x(Pt) 0.33333) + AL3PT2_D513 (x(Pt) 0.4)
AlPt-16Liu.tdb	1621.35	AL3PT5 (x(Pt) 0.625) + ALPT2 (x(Pt) 0.66667) + FCC_4SL (x(Pt) 0.73249)
AlPt-16Liu.tdb	1564.86	AL3PT2_D513 (x(Pt) 0.4) + B2_BCC (x(Pt) 0.49987) + ALPT_B20 (x(Pt) 0.5)
AlPt-16Liu.tdb	1534.5	ALPT_B20 (x(Pt) 0.5) + B2_BCC (x(Pt) 0.51742) + AL3PT5 (x(Pt) 0.625)
AlPt-16Liu.tdb	1406.74	LIQUID (x(Pt) 0.16163) + AL21PT8 (x(Pt) 0.27586) + AL2PT_C1 (x(Pt) 0.33333)
AlPt-16Liu.tdb	1406.74	LIQUID (x(Pt) 0.16155) + AL21PT8 (x(Pt) 0.27586) + AL2PT_C1 (x(Pt) 0.33333)
AlPt-16Liu.tdb	1406.74	LIQUID (x(Pt) 0.1617) + AL21PT8 (x(Pt) 0.27586) + AL2PT_C1 (x(Pt) 0.33333)
AlPt-16Liu.tdb	1324.83	ALPT2 (x(Pt) 0.66667) + FCC_4SL (x(Pt) 0.74825) + FCC_4SL#2 (x(Pt) 0.74825)
AlPt-16Liu.tdb	1085.55	LIQUID (x(Pt) 0.04183) + AL21PT5 (x(Pt) 0.19231) + AL21PT8 (x(Pt) 0.27586)
AlPt-16Liu.tdb	1085.55	LIQUID (x(Pt) 0.04192) + AL21PT5 (x(Pt) 0.19231) + AL21PT8 (x(Pt) 0.27586)
AlPt-16Liu.tdb	1085.55	LIQUID (x(Pt) 0.04179) + AL21PT5 (x(Pt) 0.19231) + AL21PT8 (x(Pt) 0.27586)
AlPt-16Liu.tdb	928.58	FCC_A1 (x(Pt) 0) + LIQUID (x(Pt) 0.00713) + AL21PT5 (x(Pt) 0.19231)
AlPt-16Liu.tdb	928.58	FCC_4SL (x(Pt) 0) + LIQUID (x(Pt) 0.00705) + AL21PT5 (x(Pt) 0.19231)
AlPt-16Liu.tdb	928.58	FCC_A1 (x(Pt) 0) + LIQUID (x(Pt) 0.00705) + AL21PT5 (x(Pt) 0.19231)
AlPt-16Liu.tdb	928.58	FCC_4SL (x(Pt) 0) + LIQUID (x(Pt) 0.00705) + AL21PT5 (x(Pt) 0.19231)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AlPt-00Wu

Invariant reactions (literature)

Invariant reactions reported in the literature for the Al–Pt system (15)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1780	eutectic: L -> AlPt3 + (Pt)	L: Pt 0.795; AlPt3: Pt 0.764; (Pt): Pt 0.857	experimental	[1] Wu 2000 cites Huch 1964 doi	Table 3, p. 3, row 1 report
1775	L—AlPt3 + (Pt)	L: Pt 0.801; AlPt3: Pt 0.766; (Pt): Pt 0.821	model	[1] Wu 2000	Table 3, p. 3, row 2 report
1766	L—Al3Pt2 + AlPt	L: Pt 0.441; Al3Pt2: Pt 0.399; AlPt: Pt 0.5	model	[1] Wu 2000	Table 3, p. 3, row 4 report
1741	eutectic: L -> Al3Pt2 + AlPt	L: Pt 0.447; Al3Pt2: Pt 0.4; AlPt: Pt 0.5	experimental	[1] Wu 2000 cites Huch 1964 doi	Table 3, p. 3, row 3 report
1738	L + AlPt3 -> Al3Pt5	L: Pt 0.623; AlPt3: Pt 0.673; Al3Pt5: Pt 0.625	experimental	[1] Wu 2000 cites Huch 1964 doi	Table 3, p. 3, row 5 report
1736	L + AlPt3—Al3Pt5	L: Pt 0.624; AlPt3: Pt 0.642; Al3Pt5: Pt 0.625	model	[1] Wu 2000	Table 3, p. 3, row 6 report
1695	L—AlPt + Al3Pt5	L: Pt 0.582; AlPt: Pt 0.5; Al3Pt5: Pt 0.625	model	[1] Wu 2000	Table 3, p. 3, row 7 report
1679	L + Al3Pt2 -> Al2Pt	L: Pt 0.318; Al3Pt2: Pt 0.4; Al2Pt: Pt 0.333	experimental	[1] Wu 2000 cites Huch 1964 doi	Table 3, p. 3, row 8 report
1677	L + Al3Pt2—Al2Pt	L: Pt 0.312; Al3Pt2: Pt 0.399; Al2Pt: Pt 0.333	model	[1] Wu 2000	Table 3, p. 3, row 9 report
1400	L + Al2Pt—Al21Pt8	L: Pt 0.175; Al2Pt: Pt 0.333; Al21Pt8: Pt 0.276	model	[1] Wu 2000	Table 3, p. 3, row 11 report
1400	L + Al2Pt -> Al21Pt8	L: Pt 0.188; Al2Pt: Pt 0.326; Al21Pt8: Pt 0.275	experimental	[1] Wu 2000 cites Huch 1964 doi	Table 3, p. 3, row 10 report
1082	L + Al21Pt8—Al21Pt5	L: Pt 0.05; Al21Pt8: Pt 0.276; Al21Pt5: Pt 0.192	model	[1] Wu 2000	Table 3, p. 3, row 13 report
1079	L + Al21Pt8 -> Al21Pt5	L: Pt 0.031; Al21Pt8: Pt 0.275; Al21Pt5: Pt 0.192	experimental	[1] Wu 2000 cites Huch 1964 doi	Table 3, p. 3, row 12 report
930	eutectic: L -> (Al) + Al21Pt5	L: Pt 0.004; (Al): Pt 0; Al21Pt5: Pt 0.192	experimental	[1] Wu 2000 cites Huch 1964 doi	Table 3, p. 3, row 14 report
928	L—(Al) + Al21Pt5	L: Pt 0.007; (Al): Pt 0; Al21Pt5: Pt 0.192	model	[1] Wu 2000	Table 3, p. 3, row 15 report

Other properties

Phase transition (6)

Phase transition, Al–Pt system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1795 K	1795	L—Al3Pt2 Al3Pt2: Pt 0.4	model	[1] Wu 2000	Table 3, p. 3, row 21 report
Phase transition	1800 K	1800	L -> Al3Pt2 Al3Pt2: Pt 0.4	experimental	[1] Wu 2000 cites Huch 1964 doi	Table 3, p. 3, row 20 report
Phase transition	1826 K	1826	L—AlPt AlPt: Pt 0.5	model	[1] Wu 2000	Table 3, p. 3, row 19 report
Phase transition	1827 K	1827	L -> AlPt AlPt: Pt 0.5	experimental	[1] Wu 2000 cites Huch 1964 doi	Table 3, p. 3, row 18 report
Phase transition	1829 K	1829	L -> AlPt3 L: Pt 0.732; AlPt3: Pt 0.75	experimental	[1] Wu 2000 cites Huch 1964 doi	Table 3, p. 3, row 16 report
Phase transition	1835 K	1835	L—AlPt3 L: Pt 0.742; AlPt3: Pt 0.75	model	[1] Wu 2000	Table 3, p. 3, row 17 report

Crystal structure (23)

Crystal structure, Al–Pt system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	3.87 Å		AlPt3(HT) alloy: Pt 0.75	model	[1] Wu 2000	Table 1, p. 2, row 20 report
Lattice a	3.876 Å		AlPt3(HT) alloy: Pt 0.75	model	[1] Wu 2000	Table 1, p. 2, row 21 report
Lattice a	19.32 Å	298.15	Al21Pt5 Al21Pt5: Al 0.808, Pt 0.192	model	[1] Wu 2000	Table 1, p. 2, row 2 report
Lattice a	19.23 Å	298.15	Al21Pt5 Al21Pt5: Al 0.808, Pt 0.192	model	[1] Wu 2000	Table 1, p. 2, row 1 report
Lattice a	12.964 Å	298.15	Al21Pt8 Al21Pt8: Al 0.73, Pt 0.27	model	[1] Wu 2000	Table 1, p. 2, row 4 report
Lattice a	12.97 Å	298.15	Al21Pt8 Al21Pt8: Al 0.73, Pt 0.27	model	[1] Wu 2000	Table 1, p. 2, row 3 report
Lattice a	5.92 Å	298.15	Al2Pt Al2Pt: Al 0.68, Pt 0.32	model	[1] Wu 2000	Table 1, p. 2, row 8 report
Lattice a	5.992 Å	298.15	Al2Pt alloy: Pt 0.333333	model	[1] Wu 2000	Table 1, p. 2, row 5 report
Lattice a	5.91 Å	298.15	Al2Pt Al2Pt: Al 0.67, Pt 0.33	model	[1] Wu 2000	Table 1, p. 2, row 7 report
Lattice a	5.91 Å	298.15	Al2Pt alloy: Pt 0.333333	model	[1] Wu 2000	Table 1, p. 2, row 6 report
Lattice a	4.208 Å	298.15	Al3Pt2 Al3Pt2: Al 0.6, Pt 0.4	model	[1] Wu 2000	Table 1, p. 2, row 9 report
Lattice a	4.2 Å	298.15	Al3Pt2 Al3Pt2: Al 0.6, Pt 0.4	model	[1] Wu 2000	Table 1, p. 2, row 12 report
Lattice a	4.22 Å	298.15	Al3Pt2 Al3Pt2: Al 0.6, Pt 0.4	model	[1] Wu 2000	Table 1, p. 2, row 10 report
Lattice a	5.41 Å	298.15	Al3Pt5 alloy: Pt 0.625	model	[1] Wu 2000	Table 1, p. 2, row 18 report
Lattice a	3.871 Å	298.15	Al3Pt5 Al3Pt5: Al 0.272, Pt 0.728	model	[1] Wu 2000	Table 1, p. 2, row 17 report
Lattice a	4.864 Å	298.15	AlPt AlPt: Al 0.5, Pt 0.5	model	[1] Wu 2000	Table 1, p. 2, row 14 report
Lattice a	4.86 Å	298.15	AlPt AlPt: Al 0.5, Pt 0.5	model	[1] Wu 2000	Table 1, p. 2, row 13 report
Lattice b	10.7 Å	298.15	Al3Pt5 alloy: Pt 0.625	model	[1] Wu 2000	Table 1, p. 2, row 18 report
Lattice c	10.684 Å	298.15	Al21Pt8 Al21Pt8: Al 0.73, Pt 0.27	model	[1] Wu 2000	Table 1, p. 2, row 4 report
Lattice c	10.66 Å	298.15	Al21Pt8 Al21Pt8: Al 0.73, Pt 0.27	model	[1] Wu 2000	Table 1, p. 2, row 3 report
Lattice c	5.172 Å	298.15	Al3Pt2 Al3Pt2: Al 0.6, Pt 0.4	model	[1] Wu 2000	Table 1, p. 2, row 9 report
Lattice c	5.17 Å	298.15	Al3Pt2 Al3Pt2: Al 0.6, Pt 0.4	model	[1] Wu 2000	Table 1, p. 2, row 12 report
Lattice c	3.95 Å	298.15	Al3Pt5 alloy: Pt 0.625	model	[1] Wu 2000	Table 1, p. 2, row 18 report

Sources

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

Kaisheng Wu, Zhanpeng Jin, Thermodynamic assessment of the Al-Pt binary system, JPE 21, 221-226 (2000). doi:10.1361/105497100770340011

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}
}