# Hf–Pt system > Hf–Pt system: 0 accepted literature values (none) and 1 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/HF-PT.html · Markdown: https://data.orchid-project.org/systems/HF-PT.md 0 accepted literature values from 0 paper(s); 1 calculated phase diagram(s). Data: [interactive phase diagram](https://orchid-project.org/phase-diagrams/#HF-PT/HfPt-18Yan.json) · [phases (11)](https://data.orchid-project.org/phases/pages/HF-PT.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/HF-PT.html) · [Markdown](https://data.orchid-project.org/systems/HF-PT.md) ## 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. Table: 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](https://doi.org/10.3139/146.111676) | `60cd809cc91cb6cbe50af791608f2202c8550c12986061948b798ecd4a52cf27` | [viewer](https://orchid-project.org/phase-diagrams/#HF-PT/HfPt-18Yan.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/HfPt-18Yan.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/HfPt-18Yan.json) | Table: 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](https://data.orchid-project.org/hulls/dft-mp/HF/HF-PT.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/HF/HF-PT.json) ## Please cite - R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/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). https://doi.org/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). https://doi.org/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. ```bibtex @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} } ``` --- Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).