Nb–H 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
NbH-23Dot.tdb	M. Dottor, J.-C. Crivello, J.-M. Joubert, Calphad, 83, 102617(2023). doi:10.1016/j.calphad.2023.102617	`79b1cf5db71443aafeee96c522ca1e66c3343b37e4c90d0fdfd8876bd1fe9fe7`	viewer · TDB · JSON
NbH-97Ans-LB.tdb	I. Ansara, N. Dupin, unpublished, 1997. doi:10.1016/S0925-8388(96)02652-7	`5f71226cd001bd4437d327384c509e777e3d4f6ed0970e762c0fcebbb7425ca9`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
NbH-23Dot.tdb	2749.59	BCC_A2 (x(H) 0.00484) + LIQUID (x(H) 0.00504) + GAS (x(H) 1)
NbH-23Dot.tdb	420.62	NBH (x(H) 0.4994) + BCC_A2 (x(H) 0.5104) + H2GAS (x(H) 1)
NbH-23Dot.tdb	420.62	NBH (x(H) 0.4994) + BCC_A2 (x(H) 0.5104) + GAS (x(H) 1)
NbH-23Dot.tdb	358.27	BCC_A2#2 (x(H) 0.09505) + BCC_A2 (x(H) 0.33261) + NBH (x(H) 0.40775)
NbH-97Ans-LB.tdb	2748.56	BCC_A2 (x(H) 0.00433) + LIQUID (x(H) 0.00504) + GAS (x(H) 1)
NbH-97Ans-LB.tdb	430.66	BCC_A2 (x(H) 0.47015) + NBH2_C1 (x(H) 0.66285) + GAS (x(H) 1)
NbH-97Ans-LB.tdb	430.66	BCC_A2 (x(H) 0.47015) + NBH2_C1 (x(H) 0.66285) + H2GAS (x(H) 1)
NbH-97Ans-LB.tdb	429.33	BCC_A2 (x(H) 0.47021) + NBH (x(H) 0.49628) + NBH2_C1 (x(H) 0.6629)
NbH-97Ans-LB.tdb	345.02	BCC_A2#2 (x(H) 0.09558) + BCC_A2 (x(H) 0.33678) + NBH (x(H) 0.43476)

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}
}