Si–O system

0 accepted literature values from 0 paper(s); 2 calculated phase diagram(s).

Data: interactive phase diagram · 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
SiO-04Sch.tdb	S.M. Schnurre, J. Groebner, R. Schmid-Fetzer, J. Non-Cryst. Solids, 336, 1-25(2004). doi:10.1016/j.jnoncrysol.2003.12.057	`0f627cab998ca6d6848043323be9fab35e1cb8d93855a992b7cc7b740416a6a2`	viewer · TDB · JSON
SiO-92Hal.tdb	B. Hallstedt, Calphad, 16, 53-61(1992). doi:10.1016/0364-5916(92)90038-Y	`243e703636b34ae02c6403902c61aa1a555872ee4b8fdd9d76ffa304a104875a`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
SiO-04Sch.tdb	2139.01	LIQUID (x(O) 6.400e-4) + GAS (x(O) 0.49995) + SIO2_L (x(O) 0.66667)
SiO-04Sch.tdb	1998	SIO2_L (x(O) 0.66667) + CRISTOBALITE (x(O) 0.66667) + GAS (x(O) 1)
SiO-04Sch.tdb	1998	LIQUID (x(O) 3.400e-4) + CRISTOBALITE (x(O) 0.66667) + SIO2_L (x(O) 0.66667)
SiO-04Sch.tdb	1998	LIQUID (x(O) 3.400e-4) + SIO2_L (x(O) 0.66667) + CRISTOBALITE (x(O) 0.66667)
SiO-04Sch.tdb	1687	LIQUID (x(O) 5.000e-5) + DIAMOND_A4 (x(O) 5.000e-5) + CRISTOBALITE (x(O) 0.66667)
SiO-04Sch.tdb	1145.12	DIAMOND_A4 (x(O) 0) + CRISTOBALITE (x(O) 0.66667) + QUARTZ (x(O) 0.66667)
SiO-04Sch.tdb	1145.12	QUARTZ (x(O) 0.66667) + CRISTOBALITE (x(O) 0.66667) + O2GAS (x(O) 1)
SiO-04Sch.tdb	1145.12	QUARTZ (x(O) 0.66667) + CRISTOBALITE (x(O) 0.66667) + GAS (x(O) 1)
SiO-92Hal.tdb	2147.79	ION (x(O) 4.100e-4) + GAS (x(O) 0.49995) + ION#2 (x(O) 0.64147)
SiO-92Hal.tdb	1996.15	ION (x(O) 0.66667) + CRISTOBALITE (x(O) 0.66667) + GAS (x(O) 1)
SiO-92Hal.tdb	1744.11	TRIDYMITE (x(O) 0.66667) + CRISTOBALITE (x(O) 0.66667) + GAS (x(O) 1)
SiO-92Hal.tdb	1744.11	ION (x(O) 0.65688) + TRIDYMITE (x(O) 0.66667) + CRISTOBALITE (x(O) 0.66667)
SiO-92Hal.tdb	1686.99	DIAMOND_A4 (x(O) 4.000e-5) + ION (x(O) 6.000e-5) + ION#2 (x(O) 0.64419)
SiO-92Hal.tdb	1469.58	DIAMOND_A4 (x(O) 1.000e-5) + ION (x(O) 0.64946) + TRIDYMITE (x(O) 0.66667)
SiO-92Hal.tdb	1143.04	DIAMOND_A4 (x(O) 0) + TRIDYMITE (x(O) 0.66667) + QUARTZ (x(O) 0.66667)
SiO-92Hal.tdb	1143.04	QUARTZ (x(O) 0.66667) + TRIDYMITE (x(O) 0.66667) + O2GAS (x(O) 1)
SiO-92Hal.tdb	1143.04	TRIDYMITE (x(O) 0.66667) + QUARTZ (x(O) 0.66667) + GAS (x(O) 1)

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