Cu–As 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
CuAs-01Uhl.tdb	S. Uhland, H. Lechtman, L. Kaufman, Calphad, 25, 109-24(2001). doi:10.1016/S0364-5916(01)00034-7	`37d4768fa49739e5dc9c903d0a823a71ff2a6768cbc7098c23c5f106e0345945`	viewer · TDB · JSON
CuAs-94Pei-LB.tdb	B. Pei, B. Bjorkman, B. Jansson, B. Sundman, Z. Metallkd., 85, 178-84(1994). doi:10.1515/ijmr-1994-850305	`8227f3feed69881f12fea9c3e2ea5e2a6973fa4315a9f7d527f26bdc68f39110`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CuAs-01Uhl.tdb	979.55	FCC_A1 (x(As) 0.063) + LIQUID (x(As) 0.16696) + CU3AS (x(As) 0.25178)
CuAs-01Uhl.tdb	966.31	CU3AS (x(As) 0.27704) + CU7AS3_D03 (x(As) 0.3) + LIQUID (x(As) 0.40564)
CuAs-01Uhl.tdb	802.79	CU7AS3_D03 (x(As) 0.3) + LIQUID (x(As) 0.51663) + RHOMBOHEDRAL_A7 (x(As) 1)
CuAs-01Uhl.tdb	620.29	FCC_A1 (x(As) 0.06812) + CU7AS_A3 (x(As) 0.125) + CU3AS (x(As) 0.26111)
CuAs-01Uhl.tdb	620.29	FCC_A1 (x(As) 0.06812) + CU7AS_A3 (x(As) 0.125) + CU3AS (x(As) 0.26112)
CuAs-01Uhl.tdb	615.39	CU3AS (x(As) 0.27711) + CU7AS3_D03 (x(As) 0.3) + RHOMBOHEDRAL_A7 (x(As) 1)
CuAs-94Pei-LB.tdb	982.59	CU3AS_D06 (x(As) 0.271) + CU12AS5_D03 (x(As) 0.29412) + ION (x(As) 0.3483)
CuAs-94Pei-LB.tdb	959.95	FCC_A1 (x(As) 0.06728) + ION (x(As) 0.19492) + CU3AS_D06 (x(As) 0.25294)
CuAs-94Pei-LB.tdb	872.04	CU12AS5_D03 (x(As) 0.29412) + ION (x(As) 0.46521) + RHOMBOHEDRAL_A7 (x(As) 1)
CuAs-94Pei-LB.tdb	597.77	FCC_A1 (x(As) 0.06735) + CU8AS_A3 (x(As) 0.11111) + CU3AS_D06 (x(As) 0.25404)
CuAs-94Pei-LB.tdb	573.12	CU3AS_D06 (x(As) 0.27659) + CU12AS5_D03 (x(As) 0.29412) + RHOMBOHEDRAL_A7 (x(As) 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}
}