Ta–O system

0 accepted literature values from 0 paper(s); 3 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
TaO-22Geb.tdb	J. Gebauer, P. Franke, H.J. Seifert, Adv. Eng. Mater., 24, 2200162(2022). doi:10.1002/adem.202200162	`886665f3a1ed281c92719e281b5247ade935ba1773cf312fa01e4d2de8168932`	viewer · TDB · JSON
TaO-22Mei-ass.tdb	K.J. Meisner, R. Zaman, B.-C. Zhou, Calphad, 76, 102391(2022). doi:10.1016/j.calphad.2022.102391	`50b2e3a96e3d3b0adfab3aacebc20d09951478f5c844fbdcf7db18813f66796a`	viewer · TDB · JSON
TaO-22Mei-ion.tdb	K.J. Meisner, R. Zaman, B.-C. Zhou, Calphad, 76, 102391(2022). doi:10.1016/j.calphad.2022.102391	`88e6b32a585417593d2a462622bfaa268565f551f208ca1fc11f1ec3eec9850f`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
TaO-22Geb.tdb	2153	BCC_A2 (x(O) 0.04874) + ION#2 (x(O) 0.34244) + ION (x(O) 0.64856)
TaO-22Geb.tdb	2144.99	ION (x(O) 0.71429) + TA2O5_HT (x(O) 0.71429) + O2GAS (x(O) 1)
TaO-22Geb.tdb	1823	BCC_A2 (x(O) 0.0495) + ION (x(O) 0.68044) + TA2O5_HT (x(O) 0.71429)
TaO-22Geb.tdb	1593.01	BCC_A2 (x(O) 0.04113) + TA2O5_LT (x(O) 0.71429) + TA2O5_HT (x(O) 0.71429)
TaO-22Geb.tdb	1593.01	TA2O5_LT (x(O) 0.71429) + TA2O5_HT (x(O) 0.71429) + O2GAS (x(O) 1)
TaO-22Mei-ass.tdb	2193.15	BCC_A2 (x(O) 0.05104) + LIQUID#2 (x(O) 0.27566) + LIQUID (x(O) 0.58075)
TaO-22Mei-ass.tdb	2152.5	TA2O5_HT (x(O) 0.71429) + LIQUID (x(O) 0.7154) + O2GAS (x(O) 1)
TaO-22Mei-ass.tdb	1914.25	BCC_A2 (x(O) 0.05535) + LIQUID (x(O) 0.60278) + TA2O5_HT (x(O) 0.71429)
TaO-22Mei-ass.tdb	1592.88	BCC_A2 (x(O) 0.04313) + TA2O5_LT (x(O) 0.71429) + TA2O5_HT (x(O) 0.71429)
TaO-22Mei-ass.tdb	1592.88	TA2O5_LT (x(O) 0.71429) + TA2O5_HT (x(O) 0.71429) + O2GAS (x(O) 1)
TaO-22Mei-ion.tdb	2169.22	ION (x(O) 0.71429) + TA2O5_HT (x(O) 0.71429) + O2GAS (x(O) 1)
TaO-22Mei-ion.tdb	2011.24	BCC_A2 (x(O) 0.05113) + ION#2 (x(O) 0.29261) + ION (x(O) 0.5861)
TaO-22Mei-ion.tdb	1787.58	BCC_A2 (x(O) 0.04767) + ION (x(O) 0.61268) + TA2O5_HT (x(O) 0.71429)
TaO-22Mei-ion.tdb	1592.88	BCC_A2 (x(O) 0.04067) + TA2O5_LT (x(O) 0.71429) + TA2O5_HT (x(O) 0.71429)
TaO-22Mei-ion.tdb	1592.88	TA2O5_LT (x(O) 0.71429) + TA2O5_HT (x(O) 0.71429) + O2GAS (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}
}