# Bi–Si system > Bi–Si system: 9 accepted literature values (phase equilibrium 6, invariant reaction 2, crystal structure 1) and 1 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/BI-SI.html · Markdown: https://data.orchid-project.org/systems/BI-SI.md 9 accepted literature values from 1 paper(s) (experimental 6, model 2, unspecified 1); 1 calculated phase diagram(s). Data: [JSON](https://data.orchid-project.org/literature/systems/BI-SI.json) · [CSV](https://data.orchid-project.org/systems/BI-SI.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#BI-SI) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#BI-SI/BiSi-85Ole-LB.json) · [phases (6)](https://data.orchid-project.org/phases/pages/BI-SI.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/BI-SI.html) · [Markdown](https://data.orchid-project.org/systems/BI-SI.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 6 | | model | 2 | | unspecified | 1 | Table: Accepted values by property group | Property group | Values | |---|---:| | invariant reaction | 2 | | phase equilibrium | 6 | | crystal structure | 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. Table: Assessments with a calculated phase diagram | TDB file | Assessment | SHA-256 | Links | |---|---|---|---| | BiSi-85Ole-LB.tdb | R.W. Olesinski, G.J. Abbaschian, Bull. Alloy Phase Diagrams, 6, 359-61(1985). [doi:10.1007/BF02880522](https://doi.org/10.1007/BF02880522) | `7e76c13e3a365e7675a49933b756c8c540d6c1a2896c6bb6e51ba5036bebc121` | [viewer](https://orchid-project.org/phase-diagrams/#BI-SI/BiSi-85Ole-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiSi-85Ole-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiSi-85Ole-LB.json) | Table: Calculated three-phase invariants (model, mole fraction of the second component) | TDB file | T (K) | Phases at the invariant | |---|---:|---| | BiSi-85Ole-LB.tdb | 1673.01 | LIQUID#2 (x(Si) 0.03343) + LIQUID (x(Si) 0.96657) + DIAMOND_A4 (x(Si) 0.99997) | | BiSi-85Ole-LB.tdb | 1673.01 | LIQUID (x(Si) 0.03343) + LIQUID#2 (x(Si) 0.96657) + DIAMOND_A4 (x(Si) 0.99997) | | BiSi-85Ole-LB.tdb | 544.55 | RHOMBOHEDRAL_A7 (x(Si) 0) + LIQUID (x(Si) 0) + DIAMOND_A4 (x(Si) 1) | Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/BI/BI-SI.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/BI/BI-SI.json) ## Invariant reactions (literature) Table: Invariant reactions reported in the literature for the Bi–Si system (2) | T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote | |---:|---|---|---|---|---|---| | 1673.15 | monotectic: Monotectic transformation | Si-rich liquid: Bi 0.033; Bi-rich liquid: Bi 0.967 | model | [1] Olesinski 1985 | Table 2, p. 2, row 1; `ORC-SSILTUANW7` | | | 1666.15 | monotectic: Monotectic transformation | Si-rich liquid: Bi 0.04; Bi-rich liquid: Bi 0.96 | model | [1] Olesinski 1985; _cites ref. 60Thu_ | Table 2, p. 2, row 3; `ORC-6VMKGH6ZMP` | | ## Other properties ### Phase equilibrium (6) Table: Phase equilibrium, Bi–Si system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Phase composition | | 1073.15 | liquid + L; _liquid: Bi 0.99938, Si 6.200e-4; L: Bi 0.99938, Si 6.200e-4_ | experimental | [1] Olesinski 1985; _cites Girault 1977_ | Table 1, p. 2, row 6; `ORC-DMQZDIJZPG` | | | Phase composition | | 1273.15 | liquid + L; _liquid: Bi 0.99738, Si 0.00262; L: Bi 0.99738, Si 0.00262_ | experimental | [1] Olesinski 1985; _cites ref. 60Thu_ | Table 1, p. 2, row 5; `ORC-EZP43UI3SB` | | | Phase composition | | 1373.15 | liquid + L; _liquid: Bi 0.99456, Si 0.00544; L: Bi 0.99456, Si 0.00544_ | experimental | [1] Olesinski 1985; _cites ref. 60Thu_ | Table 1, p. 2, row 4; `ORC-BOOJNSQTRG` | | | Phase composition | | 1423.15 | liquid + L; _liquid: Bi 0.99168, Si 0.00832; L: Bi 0.99168, Si 0.00832_ | experimental | [1] Olesinski 1985; _cites ref. 60Thu_ | Table 1, p. 2, row 3; `ORC-5OKA4BW2QJ` | | | Phase composition | | 1473.15 | liquid + L; _liquid: Bi 0.9887, Si 0.0113; L: Bi 0.9887, Si 0.0113_ | experimental | [1] Olesinski 1985; _cites ref. 60Thu_ | Table 1, p. 2, row 2; `ORC-E4RYVFTHUP` | | | Phase composition | | 1548.15 | liquid + L; _liquid: Bi 0.9807, Si 0.0193; L: Bi 0.9807, Si 0.0193_ | experimental | [1] Olesinski 1985; _cites ref. 60Thu_ | Table 1, p. 2, row 1; `ORC-4FELAX7HOC` | | ### Crystal structure (1) Table: Crystal structure, Bi–Si system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Lattice a | 5.4306 Å | 298.15 | (Si); _(Si): Bi 1.800e-5, Si 0.999982_ | unspecified | [1] Olesinski 1985 | Table 3, p. 3, row 1; `ORC-6RTWONINIU` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. R. W. Olesinski, G. J. Abbaschian, The Bi−Si (Bismuth-Silicon) system, Bulletin of Alloy Phase Diagrams 6, 359-361 (1985). [doi:10.1007/bf02880522](https://doi.org/10.1007/bf02880522) ## 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). https://doi.org/10.5281/zenodo.23735569 - 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 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. ```bibtex @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} } ``` --- 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/).