# Nb–C system > Nb–C system: 0 accepted literature values (none) and 5 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/NB-C.html · Markdown: https://data.orchid-project.org/systems/NB-C.md 0 accepted literature values from 0 paper(s); 5 calculated phase diagram(s). Data: [interactive phase diagram](https://orchid-project.org/phase-diagrams/#NB-C/NbC-01Lee.json) · [Markdown](https://data.orchid-project.org/systems/NB-C.md) ## 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 | |---|---|---|---| | NbC-01Lee.tdb | B.-J. Lee, Metall. Mater. Trans. A, 32A, 2423-39(2001). [doi:10.1007/s11661-001-0033-x](https://doi.org/10.1007/s11661-001-0033-x) | `9f0b0d890e5bd1f160096dfb21086fc7a73d5938e2a58725f7c2c2662335a974` | [viewer](https://orchid-project.org/phase-diagrams/#NB-C/NbC-01Lee.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NbC-01Lee.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NbC-01Lee.json) | | NbC-13Khv.tdb | A.V. Khvan, B. Hallstedt, Calphad, 40, 10-15(2013), based on B.-J. Lee, Metall. Mater. Trans. A, 32A, 2423-39(2001). [doi:10.1016/j.calphad.2012.11.001](https://doi.org/10.1016/j.calphad.2012.11.001) | `4ae1654829e3803695e46c6d9bf6a73b89a1419068eaa19bd7b6ca49b06b9b8e` | [viewer](https://orchid-project.org/phase-diagrams/#NB-C/NbC-13Khv.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NbC-13Khv.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NbC-13Khv.json) | | NbC-16Pen.tdb | Y. Peng, P. Zhou, M. Bu, W. Zhang, Y. Du, Calphad, 53, 10-19(2016). [doi:10.1016/j.calphad.2016.02.004](https://doi.org/10.1016/j.calphad.2016.02.004) | `22d77b32d5bd2a4f89ba7ce77386d0c1081b4922a54ed8fa7ddb3d07cda05072` | [viewer](https://orchid-project.org/phase-diagrams/#NB-C/NbC-16Pen.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NbC-16Pen.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NbC-16Pen.json) | | NbC-90Hua.tdb | W. Huang, Mater. Sci. Technol., 6, 687-94(1990). [doi:10.1179/mst.1990.6.8.687](https://doi.org/10.1179/mst.1990.6.8.687) | `3b357fde12f03aea05f1064e476a1af4384aa6425dfecc9de707c44bf0443fa7` | [viewer](https://orchid-project.org/phase-diagrams/#NB-C/NbC-90Hua.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NbC-90Hua.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NbC-90Hua.json) | | NbC-97Hua-LB.tdb | W. Huang, M. Selleby, Z. Metallkd., 88, 55-62(1997). [doi:10.3139/ijmr-1997-0010](https://doi.org/10.3139/ijmr-1997-0010) | `81f536c9df24e38143067b1412410a2a0b9f4aac56f52fda0d050c2c583bf8f9` | [viewer](https://orchid-project.org/phase-diagrams/#NB-C/NbC-97Hua-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NbC-97Hua-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NbC-97Hua-LB.json) | Table: Calculated three-phase invariants (model, mole fraction of the second component) | TDB file | T (K) | Phases at the invariant | |---|---:|---| | NbC-01Lee.tdb | 3562.55 | FCC_A1 (x(C) 0.49656) + LIQUID (x(C) 0.64882) + GRAPHITE_A9 (x(C) 1) | | NbC-01Lee.tdb | 3562.55 | FCC_A1 (x(C) 0.49657) + LIQUID (x(C) 0.64889) + GRAPHITE_A9 (x(C) 1) | | NbC-01Lee.tdb | 3199.32 | LIQUID (x(C) 0.22959) + HCP_A3 (x(C) 0.32251) + FCC_A1 (x(C) 0.39999) | | NbC-01Lee.tdb | 2602.33 | BCC_A2 (x(C) 0.05461) + LIQUID (x(C) 0.09896) + HCP_A3 (x(C) 0.30045) | | NbC-13Khv.tdb | 3562.55 | FCC_A1 (x(C) 0.49656) + LIQUID (x(C) 0.64882) + GRAPHITE_A9 (x(C) 1) | | NbC-13Khv.tdb | 3562.55 | FCC_A1 (x(C) 0.49657) + LIQUID (x(C) 0.64889) + GRAPHITE_A9 (x(C) 1) | | NbC-13Khv.tdb | 3199.32 | LIQUID (x(C) 0.22959) + HCP_A3 (x(C) 0.32251) + FCC_A1 (x(C) 0.39999) | | NbC-13Khv.tdb | 2597.4 | BCC_A2 (x(C) 0.04999) + LIQUID (x(C) 0.09818) + HCP_A3 (x(C) 0.30022) | | NbC-16Pen.tdb | 3570.46 | FCC_A1 (x(C) 0.49765) + LIQUID (x(C) 0.63269) + GRAPHITE_A9 (x(C) 1) | | NbC-16Pen.tdb | 3282.3 | LIQUID (x(C) 0.24651) + HCP_A3 (x(C) 0.31823) + FCC_A1 (x(C) 0.37717) | | NbC-16Pen.tdb | 2609.65 | BCC_A2 (x(C) 0.0506) + LIQUID (x(C) 0.10144) + HCP_A3 (x(C) 0.29052) | | NbC-90Hua.tdb | 3572.46 | FCC_A1 (x(C) 0.48678) + LIQUID (x(C) 0.60158) + GRAPHITE_A9 (x(C) 1) | | NbC-90Hua.tdb | 2798.98 | LIQUID (x(C) 0.14022) + FCC_A1 (x(C) 0.29181) + HCP_A3 (x(C) 0.29763) | | NbC-90Hua.tdb | 2611.46 | BCC_A2 (x(C) 0.05065) + LIQUID (x(C) 0.10333) + HCP_A3 (x(C) 0.28816) | | NbC-97Hua-LB.tdb | 3570.46 | FCC_A1 (x(C) 0.49765) + LIQUID (x(C) 0.63269) + GRAPHITE_A9 (x(C) 1) | | NbC-97Hua-LB.tdb | 3282.3 | LIQUID (x(C) 0.24651) + HCP_A3 (x(C) 0.31823) + FCC_A1 (x(C) 0.37717) | | NbC-97Hua-LB.tdb | 2612.75 | BCC_A2 (x(C) 0.05224) + LIQUID (x(C) 0.10191) + HCP_A3 (x(C) 0.29066) | ## Please cite - 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 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 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. ```bibtex @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} } ``` --- 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/).