Pt–Ti system

29 accepted literature values from 1 paper(s) (experimental 16, model 13); 1 calculated phase diagram(s). 9 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 (10) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	16
model	13

Accepted values by property group
Property group	Values
invariant reaction	28
activity / EMF / Gibbs energy	1

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
PtTi-08Li.tdb	M. Li, W. Han, C. Li, J. Alloys Compd., 461, 189-94(2008). doi:10.1016/j.jallcom.2007.07.047	`225d207ff370fad5f2424732156ead08728f17d5382c43193d57fe77c3031724`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
PtTi-08Li.tdb	2073.38	LIQUID (x(Ti) 0.11551) + FCC_A1 (x(Ti) 0.11595) + PT3TI_D024 (x(Ti) 0.21782)
PtTi-08Li.tdb	2045.06	PT3TI_D024 (x(Ti) 0.24987) + LIQUID (x(Ti) 0.39095) + PTTI_B2 (x(Ti) 0.43883)
PtTi-08Li.tdb	1698.47	PTTI_B2 (x(Ti) 0.51961) + LIQUID (x(Ti) 0.66898) + PTTI3_A15 (x(Ti) 0.73275)
PtTi-08Li.tdb	1583.06	PTTI3_A15 (x(Ti) 0.7638) + LIQUID (x(Ti) 0.86609) + BCC_A2 (x(Ti) 0.91726)
PtTi-08Li.tdb	1478.17	PTTI_B2 (x(Ti) 0.517) + PT3TI4 (x(Ti) 0.57143) + PTTI3_A15 (x(Ti) 0.73616)
PtTi-08Li.tdb	1353.05	FCC_A1 (x(Ti) 0.01568) + PT8TI (x(Ti) 0.11111) + PT3TI_D024 (x(Ti) 0.20221)
PtTi-08Li.tdb	1353.05	FCC_A1 (x(Ti) 0.01567) + PT8TI (x(Ti) 0.11111) + PT3TI_D024 (x(Ti) 0.20222)
PtTi-08Li.tdb	1312.19	PTTI_B19 (x(Ti) 0.50116) + PTTI_B2 (x(Ti) 0.50224) + PT3TI4 (x(Ti) 0.57143)
PtTi-08Li.tdb	1312.19	PTTI_B19 (x(Ti) 0.50121) + PTTI_B2 (x(Ti) 0.50231) + PT3TI4 (x(Ti) 0.57143)
PtTi-08Li.tdb	1306.87	PT3TI_D024 (x(Ti) 0.25) + PTTI_B2 (x(Ti) 0.47503) + PTTI_B19 (x(Ti) 0.47823)
PtTi-08Li.tdb	1112.87	PTTI3_A15 (x(Ti) 0.78201) + BCC_A2 (x(Ti) 0.96895) + HCP_A3 (x(Ti) 0.97816)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Pt–Ti system (28)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
2224	congruent melting: L → γ	L: Pt 0.754; γ: Pt 0.754	model	[1] Li 2008	Table 1, p. 2, row 14 report
2223	congruent melting: L → γ	L: Pt 0.75; γ: Pt 0.75	experimental	[1] Li 2008 cites Nishimura 1957	Table 1, p. 2, row 13 report
2106	congruent melting: L → βTiPt	L: Pt 0.522; βTiPt: Pt 0.522	model	[1] Li 2008	Table 1, p. 2, row 10 report
2103	congruent melting: L → βTiPt	L: Pt 0.5; βTiPt: Pt 0.5	experimental	[1] Li 2008 cites Nishimura 1957	Table 1, p. 2, row 9 report
2073	peritectic: L + γ → Fcc	L: Pt 0.885; γ: Pt 0.782; Fcc: Pt 0.884	model	[1] Li 2008	Table 1, p. 2, row 16 report
2073	peritectic: L + γ → Fcc	L: Pt 0.9; γ: Pt 0.8; Fcc: Pt 0.88	experimental	[1] Li 2008 cites Nishimura 1957	Table 1, p. 2, row 15 report
2053	eutectic: L → βTiPt + γ	L: Pt 0.58; βTiPt: Pt 0.526; γ: Pt 0.75	experimental	[1] Li 2008 cites Nishimura 1957	Table 1, p. 2, row 11 report
2045	eutectic: L → βTiPt + γ	L: Pt 0.613; βTiPt: Pt 0.574; γ: Pt 0.75	model	[1] Li 2008	Table 1, p. 2, row 12 report
1773	congruent melting: L → Ti3Pt	L: Pt 0.25; Ti3Pt: Pt 0.25	experimental	[1] Li 2008 cites Biggs 2004 doi	Table 1, p. 2, row 4 report
1771	congruent melting: L → Ti3Pt	L: Pt 0.253; Ti3Pt: Pt 0.253	model	[1] Li 2008	Table 1, p. 2, row 5 report
1698	eutectic: L → βTiPt + Ti3Pt	L: Pt 0.331; βTiPt: Pt 0.481; Ti3Pt: Pt 0.267	model	[1] Li 2008	Table 1, p. 2, row 8 report
1697	eutectic: L → βTiPt + Ti3Pt	L: Pt 0.34; βTiPt: Pt 0.45; Ti3Pt: Pt 0.28	experimental	[1] Li 2008 cites Biggs 2004 doi	Table 1, p. 2, row 7 report
1643	congruent melting: L → Ti3Pt	L: Pt 0.25; Ti3Pt: Pt 0.25	experimental	[1] Li 2008 cites Nishimura 1957	Table 1, p. 2, row 3 report
1593	eutectic: L → βTiPt + Ti3Pt	L: Pt 0.34; βTiPt: Pt 0.5; Ti3Pt: Pt 0.25	experimental	[1] Li 2008 cites Nishimura 1957	Table 1, p. 2, row 6 report
1583	eutectic: L → Bcc + Ti3Pt	L: Pt 0.16; Bcc: Pt 0.094; Ti3Pt: Pt 0.25	experimental	[1] Li 2008 cites Nishimura 1957	Table 1, p. 2, row 1 report
1583	eutectic: L → Bcc + Ti3Pt	L: Pt 0.134; Bcc: Pt 0.083; Ti3Pt: Pt 0.236	model	[1] Li 2008	Table 1, p. 2, row 2 report
1478	peritectoid: Ti3Pt + βTiPt → Ti4Pt3	Ti3Pt: Pt 0.27; βTiPt: Pt 0.45; Ti4Pt3: Pt 0.428	experimental	[1] Li 2008 cites Biggs 2004 doi	Table 1, p. 2, row 19 report
1478	peritectoid: Ti3Pt + βTiPt → Ti4Pt3	Ti3Pt: Pt 0.264; βTiPt: Pt 0.483; Ti4Pt3: Pt 0.428	model	[1] Li 2008	Table 1, p. 2, row 20 report
1353	peritectoid: γ + Fcc → TiPt8	γ: Pt 0.8; Fcc: Pt 0.9; TiPt8: Pt 0.889	experimental	[1] Li 2008 cites Meschter 1976 doi	Table 1, p. 2, row 27 report
1353	peritectoid: γ + Fcc → TiPt8	γ: Pt 0.798; Fcc: Pt 0.984; TiPt8: Pt 0.889	model	[1] Li 2008	Table 1, p. 2, row 28 report
1313	congruent transformation: βTiPt → αTiPt	βTiPt: Pt 0.502; αTiPt: Pt 0.502	model	[1] Li 2008	Table 1, p. 2, row 24 report
1313	congruent transformation: βTiPt → αTiPt	βTiPt: Pt 0.5; αTiPt: Pt 0.5	experimental	[1] Li 2008 cites Murray 1982 doi	Table 1, p. 2, row 23 report
1312	peritectoid: Ti4Pt3 + βTiPt → αTiPt	Ti4Pt3: Pt 0.428; βTiPt: Pt 0.497; αTiPt: Pt 0.499	model	[1] Li 2008	Table 1, p. 2, row 26 report
1308	peritectoid: Ti3Pt + βTiPt → αTiPt	Ti3Pt: Pt 0.28; βTiPt: Pt 0.46; αTiPt: Pt 0.46	experimental	[1] Li 2008 cites Murray 1982 doi	Table 1, p. 2, row 25 report
1297	peritectoid: γ + βTiPt → αTiPt	γ: Pt 0.75; βTiPt: Pt 0.522; αTiPt: Pt 0.525	model	[1] Li 2008	Table 1, p. 2, row 22 report
1273	peritectoid: TiPt3- + βTiPt → αTiPt	TiPt3-: Pt 0.73; βTiPt: Pt 0.53; αTiPt: Pt 0.53	experimental	[1] Li 2008 cites Murray 1982 doi	Table 1, p. 2, row 21 report
1113	eutectoid: Bcc → Hcp + Ti3Pt	Bcc: Pt 0.03; Hcp: Pt 0.015; Ti3Pt: Pt 0.25	experimental	[1] Li 2008 cites Nishimura 1957	Table 1, p. 2, row 17 report
1113	eutectoid: Bcc → Hcp + Ti3Pt	Bcc: Pt 0.031; Hcp: Pt 0.022; Ti3Pt: Pt 0.22	model	[1] Li 2008	Table 1, p. 2, row 18 report

Other properties

Activity / EMF / Gibbs energy (1)

Activity / EMF / Gibbs energy, Pt–Ti system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Gibbs energy printed: standard Gibbs energy of formation	-282.57 unspecified ± 4	1573		experimental	[1] Li 2008 cites Jacob 2000 doi	p. 2 report	And the standard Gibbs energy of formation of TiPt3 is -282.57 ± 4 kJ/mol at 1573 K [18].

Sources

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

Mei Li, Wei Han, Changrong Li, Thermodynamic assessment of the Pt–Ti system, Journal of Alloys and Compounds 461, 189-194 (2008). doi:10.1016/j.jallcom.2007.07.047

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}
}