Pd–Ti system

28 accepted literature values from 1 paper(s) (experimental 13, model 15); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (10) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	13
model	15

Accepted values by property group
Property group	Values
invariant reaction	28

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
PdTi-11Guo.tdb	C. Guo, M. Li, C. Li, Z. Du, Calphad, 35, 512-17(2011). doi:10.1016/j.calphad.2011.07.004	`e8810155ee2f9664e23027a4b59b55a950342f417372a14d11269d9be34c6fd2`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
PdTi-11Guo.tdb	1752.93	LIQUID (x(Ti) 0.20832) + FCC_A1 (x(Ti) 0.21354) + PD3TI_D024 (x(Ti) 0.25)
PdTi-11Guo.tdb	1752.93	LIQUID (x(Ti) 0.20795) + FCC_A1 (x(Ti) 0.21321) + PD3TI_D024 (x(Ti) 0.25)
PdTi-11Guo.tdb	1673.39	PD3TI_D024 (x(Ti) 0.25) + LIQUID (x(Ti) 0.32266) + PDTI_C11B (x(Ti) 0.33839)
PdTi-11Guo.tdb	1673.39	PD3TI_D024 (x(Ti) 0.25) + LIQUID (x(Ti) 0.32253) + PDTI_C11B (x(Ti) 0.33836)
PdTi-11Guo.tdb	1602.73	PDTI_C11B (x(Ti) 0.36571) + PD3TI2 (x(Ti) 0.4) + LIQUID (x(Ti) 0.40218)
PdTi-11Guo.tdb	1572.96	PD3TI2 (x(Ti) 0.4) + LIQUID (x(Ti) 0.42772) + B2_BCC (x(Ti) 0.44392)
PdTi-11Guo.tdb	1572.96	PD3TI2 (x(Ti) 0.4) + LIQUID (x(Ti) 0.42772) + B2_BCC (x(Ti) 0.44392)
PdTi-11Guo.tdb	1154.99	HCP_A3 (x(Ti) 1) + B2_BCC (x(Ti) 1) + BCC_A2 (x(Ti) 1)
PdTi-11Guo.tdb	963.06	PDTI_C11B (x(Ti) 0.66667) + PDTI3_A15 (x(Ti) 0.75) + B2_BCC (x(Ti) 0.85453)
PdTi-11Guo.tdb	963.06	PDTI_C11B (x(Ti) 0.66667) + PDTI3_A15 (x(Ti) 0.75) + B2_BCC (x(Ti) 0.85452)
PdTi-11Guo.tdb	963.06	PDTI_C11B (x(Ti) 0.66667) + PDTI3_A15 (x(Ti) 0.75) + BCC_A2 (x(Ti) 0.85452)
PdTi-11Guo.tdb	868.41	PDTI3_A15 (x(Ti) 0.75) + B2_BCC (x(Ti) 0.91084) + HCP_A3 (x(Ti) 0.97157)
PdTi-11Guo.tdb	868.41	PDTI3_A15 (x(Ti) 0.75) + BCC_A2 (x(Ti) 0.91091) + HCP_A3 (x(Ti) 0.97159)
PdTi-11Guo.tdb	868.41	PDTI3_A15 (x(Ti) 0.75) + B2_BCC (x(Ti) 0.91091) + HCP_A3 (x(Ti) 0.97159)
PdTi-11Guo.tdb	793.01	PD3TI2 (x(Ti) 0.4) + B2_BCC (x(Ti) 0.48313) + PDTI_B19 (x(Ti) 0.48749)
PdTi-11Guo.tdb	793.01	PD3TI2 (x(Ti) 0.4) + B2_BCC (x(Ti) 0.48313) + PDTI_B19 (x(Ti) 0.48749)
PdTi-11Guo.tdb	783	PDTI_B19 (x(Ti) 0.51282) + B2_BCC (x(Ti) 0.51788) + PDTI_C11B (x(Ti) 0.66667)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Pd–Ti system (28)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1803	congruent melting: liq. -> Pd3Ti	L: Ti 0.25; Pd3Ti: Pd 0.75, Ti 0.25	model	[1] Guo 2011	Table 3, p. 6, row 5 report
1803	congruent melting: liq. -> Pd3Ti	L: Ti 0.25; Pd3Ti: Pd 0.75, Ti 0.25	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 6 report
1753	liq. + Pd3Ti -> fcc	L: Ti 0.2; Pd3Ti: Pd 0.75, Ti 0.25; fcc: Ti 0.22	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 4 report
1753	liq. + Pd3Ti -> fcc	L: Ti 0.2079; Pd3Ti: Pd 0.75, Ti 0.25; fcc: Ti 0.2132	model	[1] Guo 2011	Table 3, p. 6, row 3 report
1685	congruent melting: liq. -> Pd2Ti	L: Ti 0.3433; Pd2Ti: Ti 0.3433	model	[1] Guo 2011	Table 3, p. 6, row 9 report
1673	eutectic: liq. -> Pd3Ti + Pd2Ti	L: Ti 0.3227; Pd3Ti: Pd 0.75, Ti 0.25; Pd2Ti: Ti 0.3384	model	[1] Guo 2011	Table 3, p. 6, row 7 report
1673	congruent melting: liq. -> fcc	L: Ti 0.15; fcc: Ti 0.15	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 2 report
1673	congruent melting: liq. -> fcc	L: Ti 0.0953; fcc: Ti 0.0953	model	[1] Guo 2011	Table 3, p. 6, row 1 report
1673	congruent melting: liq. -> βPdTi	L: Ti 0.5008; βPdTi: Ti 0.5008	model	[1] Guo 2011	Table 3, p. 6, row 14 report
1673	eutectic: liq. -> Pd3Ti + Pd2Ti	L: Ti 0.35; Pd3Ti: Pd 0.75, Ti 0.25; Pd2Ti: Ti 0.333	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 8 report
1673	congruent melting: liq. -> βPdTi	L: Ti 0.5; βPdTi: Ti 0.5	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 15 report
1603	liq. + Pd2Ti -> Pd3Ti2	L: Ti 0.4022; Pd2Ti: Ti 0.3657; Pd3Ti2: Pd 0.6, Ti 0.4	model	[1] Guo 2011	Table 3, p. 6, row 10 report
1603	liq. + Pd2Ti -> Pd3Ti2	L: Ti 0.41; Pd2Ti: Ti 0.35; Pd3Ti2: Pd 0.6, Ti 0.4	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 11 report
1573	eutectic: liq. -> Pd3Ti2 + βPdTi	L: Ti 0.4277; Pd3Ti2: Pd 0.6, Ti 0.4; βPdTi: Ti 0.4439	model	[1] Guo 2011	Table 3, p. 6, row 12 report
1573	eutectic: liq. -> Pd3Ti2 + βPdTi	L: Ti 0.42; Pd3Ti2: Pd 0.6, Ti 0.4; βPdTi: Ti 0.47	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 13 report
1393	congruent melting: liq. -> bcc	L: Ti 0.6805; bcc: Ti 0.6805	model	[1] Guo 2011	Table 3, p. 6, row 16 report
1393	congruent melting: liq. -> bcc	L: Ti 0.68; bcc: Ti 0.68	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 17 report
1233	polymorphic: βPdTi -> PdTi2	βPdTi: Ti 0.667; PdTi2: Pd 0.333333, Ti 0.666667	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 19 report
1233	polymorphic: βPdTi -> PdTi2	βPdTi: Ti 0.6667; PdTi2: Pd 0.333333, Ti 0.666667	model	[1] Guo 2011	Table 3, p. 6, row 18 report
963	bcc + PdTi2 -> PdTi3	bcc: Ti 0.8545; PdTi2: Pd 0.333333, Ti 0.666667; PdTi3: Pd 0.25, Ti 0.75	model	[1] Guo 2011	Table 3, p. 6, row 20 report
963	bcc + PdTi2 -> PdTi3	bcc: Ti 0.88; PdTi2: Pd 0.333333, Ti 0.666667; PdTi3: Pd 0.25, Ti 0.75	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 21 report
868	bcc -> PdTi3 + hcp	bcc: Ti 0.911; PdTi3: Pd 0.25, Ti 0.75; hcp: Ti 0.9716	model	[1] Guo 2011	Table 3, p. 6, row 22 report
868	bcc -> PdTi3 + hcp	bcc: Ti 0.9; PdTi3: Pd 0.25, Ti 0.75; hcp: Ti 0.99	experimental	[1] Guo 2011 cites Okamoto 1993 doi	Table 3, p. 6, row 23 report
813	polymorphic: βPdTi -> αPdTi	βPdTi: Ti 0.4983; αPdTi: Ti 0.4983	model	[1] Guo 2011	Table 3, p. 6, row 24 report
793	βPdTi -> Pd3Ti2 + αPdTi	βPdTi: Ti 0.4831; Pd3Ti2: Pd 0.6, Ti 0.4; αPdTi: Ti 0.4875	model	[1] Guo 2011	Table 3, p. 6, row 25 report
793	βPdTi -> Pd3Ti2 + αPdTi	βPdTi: Pd 0.5, Ti 0.5; Pd3Ti2: Pd 0.6, Ti 0.4; αPdTi: Pd 0.5, Ti 0.5	experimental	[1] Guo 2011 cites Raub 1968	Table 3, p. 6, row 26 report
783	βPdTi -> αPdTi + PdTi2	βPdTi: Pd 0.5, Ti 0.5; αPdTi: Pd 0.5, Ti 0.5; PdTi2: Pd 0.333333, Ti 0.666667	experimental	[1] Guo 2011 cites Raub 1968	Table 3, p. 6, row 28 report
783	βPdTi -> αPdTi + PdTi2	βPdTi: Ti 0.5179; αPdTi: Ti 0.5128; PdTi2: Pd 0.333333, Ti 0.666667	model	[1] Guo 2011	Table 3, p. 6, row 27 report

Sources

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

Cuiping Guo, Mei Li, Changrong Li, Zhenmin Du, A thermodynamic modeling of the Pd–Ti system, Calphad 35, 512-517 (2011). doi:10.1016/j.calphad.2011.07.004

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}
}