Hf–Pt system

0 accepted literature values from 0 paper(s); 1 calculated phase diagram(s).

Data: interactive phase diagram · phases (11) · papers (bibliography) · Markdown

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
HfPt-18Yan.tdb	B. Yang, C. Guo, C. Li, Z. Du, Int. J. Mater. Res., 109, 851-57(2018). doi:10.3139/146.111676	`60cd809cc91cb6cbe50af791608f2202c8550c12986061948b798ecd4a52cf27`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
HfPt-18Yan.tdb	2373.29	D024_HCP (x(Pt) 0.74999) + HFPT4_L12 (x(Pt) 0.7808) + LIQUID (x(Pt) 0.80463)
HfPt-18Yan.tdb	2373.29	D024_HCP (x(Pt) 0.74999) + HFPT4_L12 (x(Pt) 0.7808) + LIQUID (x(Pt) 0.80463)
HfPt-18Yan.tdb	2373.26	B2_BCC (x(Pt) 0.50156) + HF3PT4 (x(Pt) 0.53505) + LIQUID (x(Pt) 0.55207)
HfPt-18Yan.tdb	2373.26	B2_BCC (x(Pt) 0.50156) + HF3PT4 (x(Pt) 0.53505) + LIQUID (x(Pt) 0.55207)
HfPt-18Yan.tdb	2183.35	HFPT4_L12 (x(Pt) 0.79167) + FCC_A1 (x(Pt) 0.8398) + LIQUID (x(Pt) 0.84159)
HfPt-18Yan.tdb	2123.29	HF3PT4 (x(Pt) 0.56544) + LIQUID (x(Pt) 0.63905) + D024_HCP (x(Pt) 0.72559)
HfPt-18Yan.tdb	1933.11	LIQUID (x(Pt) 0.31002) + HF2PT (x(Pt) 0.33219) + B2_BCC (x(Pt) 0.44949)
HfPt-18Yan.tdb	1933.11	LIQUID (x(Pt) 0.31002) + HF2PT (x(Pt) 0.33219) + B2_BCC (x(Pt) 0.44949)
HfPt-18Yan.tdb	1902.98	HF3PT4 (x(Pt) 0.5667) + HF2PT3 (x(Pt) 0.6) + D024_HCP (x(Pt) 0.73669)
HfPt-18Yan.tdb	1890.41	HF2PT (x(Pt) 0.33235) + B2_BCC (x(Pt) 0.45854) + HFPT_B33 (x(Pt) 0.46335)
HfPt-18Yan.tdb	1890.41	HF2PT (x(Pt) 0.33235) + B2_BCC (x(Pt) 0.45854) + HFPT_B33 (x(Pt) 0.46335)
HfPt-18Yan.tdb	1876.33	HFPT_B33 (x(Pt) 0.5) + B2_BCC (x(Pt) 0.50166) + HF3PT4 (x(Pt) 0.54543)
HfPt-18Yan.tdb	1876.33	HFPT_B33 (x(Pt) 0.5) + B2_BCC (x(Pt) 0.50166) + HF3PT4 (x(Pt) 0.54544)
HfPt-18Yan.tdb	1722.83	B2_BCC (x(Pt) 0.09811) + LIQUID (x(Pt) 0.1976) + HF2PT (x(Pt) 0.31717)
HfPt-18Yan.tdb	1722.83	BCC_A2 (x(Pt) 0.09811) + LIQUID (x(Pt) 0.1976) + HF2PT (x(Pt) 0.31717)
HfPt-18Yan.tdb	1652.71	D024_HCP (x(Pt) 0) + B2_BCC (x(Pt) 0.07857) + HF2PT (x(Pt) 0.31463)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Please cite

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 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); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). 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_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}
}