# Ni–Ta system

> Ni–Ta system: 180 accepted literature values (invariant reaction 87, formation 52, phase equilibrium 24, phase transition 17) and 7 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/NI-TA.html · Markdown: https://data.orchid-project.org/systems/NI-TA.md

180 accepted literature values from 3 paper(s) (experimental 76, model 37, DFT 52, unspecified 15); 7 calculated phase diagram(s). 5 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: [JSON](https://data.orchid-project.org/literature/systems/NI-TA.json) · [CSV](https://data.orchid-project.org/systems/NI-TA.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#NI-TA) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#NI-TA/NiTa-09Zho.json) · [phases (14)](https://data.orchid-project.org/phases/pages/NI-TA.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/NI-TA.html) · [Markdown](https://data.orchid-project.org/systems/NI-TA.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 76 |
| model | 37 |
| DFT | 52 |
| unspecified | 15 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 87 |
| phase transition | 17 |
| phase equilibrium | 24 |
| formation | 52 |

## 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 |
|---|---|---|---|
| NiTa-09Zho.tdb | S.H. Zhou, Y. Wang, L.-Q. Chen, Z.-K. Liu, R.E. Napolitano, Calphad, 33, 631-41(2009). [doi:10.1016/j.calphad.2009.06.006](https://doi.org/10.1016/j.calphad.2009.06.006) | `bca1f9df8f2b8536acb45de4df9fa4c0b96387d86fddd14bdd6c89dfc2aa2895` | [viewer](https://orchid-project.org/phase-diagrams/#NI-TA/NiTa-09Zho.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NiTa-09Zho.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NiTa-09Zho.json) |
| NiTa-18Cac.tdb | G. Cacciamani, G. Roncallo, Y. Wang, E. Vacchieri, A. Costa, J. Alloys Compd., 730, 291-310(2018). [doi:10.1016/j.jallcom.2017.09.327](https://doi.org/10.1016/j.jallcom.2017.09.327) | `26d7ac62e4a13b7346ed211f7ac52a0deb2a68fab770ab9c769bf88e88dd609d` | [viewer](https://orchid-project.org/phase-diagrams/#NI-TA/NiTa-18Cac.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NiTa-18Cac.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NiTa-18Cac.json) |
| NiTa-18Zho.tdb | C. Zhou, C. Guo, C. Li, Z. Du, Thermochim. Acta, 666, 135-47(2018). [doi:10.1016/j.tca.2018.06.011](https://doi.org/10.1016/j.tca.2018.06.011) | `34f970c38af0af5871bd5588fb09b02baf6ae2c361175f981fcd54027faaf63f` | [viewer](https://orchid-project.org/phase-diagrams/#NI-TA/NiTa-18Zho.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NiTa-18Zho.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NiTa-18Zho.json) |
| NiTa-19Zho.tdb | C. Zhou, C. Guo, C. Li, Z. Du, Calphad, 66, 101649(2019). [doi:10.1016/j.calphad.2019.101649](https://doi.org/10.1016/j.calphad.2019.101649) | `02b9c3696c463343e65421714856a2af6163db2a8684a7a504a06ed04cdf6293` | [viewer](https://orchid-project.org/phase-diagrams/#NI-TA/NiTa-19Zho.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NiTa-19Zho.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NiTa-19Zho.json) |
| NiTa-20Yan.tdb | B. Yang, C. Guo, C. Li, Z. Du, J. Phase Equilib. Diffus., 41, 500-21(2020). [doi:10.1007/s11669-020-00807-3](https://doi.org/10.1007/s11669-020-00807-3) | `194d341454d3483bfd6407e8cb2ee88f7bc4d7a6bd167e5a273fea36ca212fd3` | [viewer](https://orchid-project.org/phase-diagrams/#NI-TA/NiTa-20Yan.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NiTa-20Yan.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NiTa-20Yan.json) |
| NiTa-94Ans.tdb | I. Ansara, M. Selleby, Calphad, 18, 99-108(1994). [doi:10.1016/0364-5916(94)90011-6](https://doi.org/10.1016/0364-5916%2894%2990011-6) | `30aa67cfb235eae34c77b8b61592bbc9eeff72760184c7b8211c3017009ea1a5` | [viewer](https://orchid-project.org/phase-diagrams/#NI-TA/NiTa-94Ans.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NiTa-94Ans.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NiTa-94Ans.json) |
| NiTa-99Cui-LB.tdb | Y. Cui, Z. Jin, Z. Metallkd., 90, 233-41(1999). [doi:10.1515/ijmr-1999-900310](https://doi.org/10.1515/ijmr-1999-900310) | `83612ced1f1b64909a79a1fcda667f8e344b48b069b6ffc5229042733e7c2730` | [viewer](https://orchid-project.org/phase-diagrams/#NI-TA/NiTa-99Cui-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/NiTa-99Cui-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/NiTa-99Cui-LB.json) |

Table: Calculated three-phase invariants (model, mole fraction of the second component)

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| NiTa-09Zho.tdb | 2059.83 | LIQUID (x(Ta) 0.55107) + NITA2_C16 (x(Ta) 0.70865) + BCC_A2 (x(Ta) 0.79055) |
| NiTa-09Zho.tdb | 1841.96 | LIQUID (x(Ta) 0.47071) + NITA_D85 (x(Ta) 0.57396) + NITA2_C16 (x(Ta) 0.6793) |
| NiTa-09Zho.tdb | 1678.62 | NI3TA_KAPPA (x(Ta) 0.25295) + NI2TA_C11B (x(Ta) 0.34404) + LIQUID (x(Ta) 0.36658) |
| NiTa-09Zho.tdb | 1678.53 | NI2TA_C11B (x(Ta) 0.34418) + LIQUID (x(Ta) 0.36684) + NITA_D85 (x(Ta) 0.50239) |
| NiTa-09Zho.tdb | 1666.62 | FCC_A1 (x(Ta) 0.13773) + LIQUID (x(Ta) 0.1448) + NI3TA_KAPPA (x(Ta) 0.24049) |
| NiTa-09Zho.tdb | 1570.35 | NI8X (x(Ta) 0.11111) + FCC_A1 (x(Ta) 0.12609) + NI3TA_KAPPA (x(Ta) 0.23751) |
| NiTa-09Zho.tdb | 1570.35 | NI8X (x(Ta) 0.11111) + FCC_A1 (x(Ta) 0.12612) + NI3TA_KAPPA (x(Ta) 0.23752) |
| NiTa-09Zho.tdb | 603.39 | NI3TA_KAPPA (x(Ta) 0.25) + NI3TA_D022 (x(Ta) 0.25) + NI2TA_C11B (x(Ta) 0.32911) |
| NiTa-09Zho.tdb | 600.01 | NI8X (x(Ta) 0.11111) + NI3TA_KAPPA (x(Ta) 0.2441) + NI3TA_D022 (x(Ta) 0.25) |
| NiTa-09Zho.tdb | 600.01 | NI8X (x(Ta) 0.11111) + NI3TA_KAPPA (x(Ta) 0.24405) + NI3TA_D022 (x(Ta) 0.25) |
| NiTa-09Zho.tdb | 600.01 | NI8X (x(Ta) 0.11111) + NI3TA_KAPPA (x(Ta) 0.2441) + NI3TA_D022 (x(Ta) 0.25) |
| NiTa-09Zho.tdb | 474.07 | NI2TA_C11B (x(Ta) 0.33384) + NITA_D85 (x(Ta) 0.52656) + NITA2_C16 (x(Ta) 0.66561) |
| NiTa-18Cac.tdb | 2059.83 | LIQUID (x(Ta) 0.55107) + NITA2_C16 (x(Ta) 0.70865) + BCC_A2 (x(Ta) 0.79055) |
| NiTa-18Cac.tdb | 1895.02 | LIQUID (x(Ta) 0.48763) + NITA_D85 (x(Ta) 0.56708) + NITA2_C16 (x(Ta) 0.68708) |
| NiTa-18Cac.tdb | 1678.62 | NI3TA_KAPPA (x(Ta) 0.25295) + NI2TA_C11B (x(Ta) 0.34404) + LIQUID (x(Ta) 0.36658) |
| NiTa-18Cac.tdb | 1677.57 | NI2TA_C11B (x(Ta) 0.34581) + LIQUID (x(Ta) 0.36965) + NITA_D85 (x(Ta) 0.51606) |
| NiTa-18Cac.tdb | 1666.62 | FCC_A1 (x(Ta) 0.13773) + LIQUID (x(Ta) 0.1448) + NI3TA_KAPPA (x(Ta) 0.24049) |
| NiTa-18Cac.tdb | 1570.35 | NI8X (x(Ta) 0.11111) + FCC_A1 (x(Ta) 0.12609) + NI3TA_KAPPA (x(Ta) 0.23751) |
| NiTa-18Cac.tdb | 1570.35 | NI8X (x(Ta) 0.11111) + FCC_A1 (x(Ta) 0.12612) + NI3TA_KAPPA (x(Ta) 0.23752) |
| NiTa-18Cac.tdb | 603.39 | NI3TA_KAPPA (x(Ta) 0.25) + NI3TA_D022 (x(Ta) 0.25) + NI2TA_C11B (x(Ta) 0.32911) |
| NiTa-18Cac.tdb | 600.01 | NI8X (x(Ta) 0.11111) + NI3TA_KAPPA (x(Ta) 0.2441) + NI3TA_D022 (x(Ta) 0.25) |
| NiTa-18Cac.tdb | 600.01 | NI8X (x(Ta) 0.11111) + NI3TA_KAPPA (x(Ta) 0.24405) + NI3TA_D022 (x(Ta) 0.25) |
| NiTa-18Cac.tdb | 600.01 | NI8X (x(Ta) 0.11111) + NI3TA_KAPPA (x(Ta) 0.2441) + NI3TA_D022 (x(Ta) 0.25) |
| NiTa-18Cac.tdb | 417.95 | NI2TA_C11B (x(Ta) 0.33354) + NITA_D85 (x(Ta) 0.53846) + NITA2_C16 (x(Ta) 0.66612) |
| NiTa-18Zho.tdb | 2059.96 | LIQUID (x(Ta) 0.58866) + NITA2_C16 (x(Ta) 0.70916) + BCC_A2 (x(Ta) 0.85828) |
| NiTa-18Zho.tdb | 1843.36 | LIQUID (x(Ta) 0.5175) + NITA_D85 (x(Ta) 0.57241) + NITA2_C16 (x(Ta) 0.68067) |
| NiTa-18Zho.tdb | 1677.07 | NI3TA (x(Ta) 0.25785) + NI2TA_C11B (x(Ta) 0.33896) + LIQUID (x(Ta) 0.348) |
| NiTa-18Zho.tdb | 1645.45 | FCC_A1 (x(Ta) 0.1369) + LIQUID (x(Ta) 0.15192) + NI3TA (x(Ta) 0.23704) |
| NiTa-18Zho.tdb | 1643.4 | NI2TA_C11B (x(Ta) 0.354) + LIQUID (x(Ta) 0.40241) + NITA_D85 (x(Ta) 0.51467) |
| NiTa-19Zho.tdb | 2059.96 | LIQUID (x(Ta) 0.58866) + NITA2_C16 (x(Ta) 0.70916) + BCC_A2 (x(Ta) 0.85828) |
| NiTa-19Zho.tdb | 1843.44 | LIQUID (x(Ta) 0.51752) + NITA_D85 (x(Ta) 0.56664) + NITA2_C16 (x(Ta) 0.68068) |
| NiTa-19Zho.tdb | 1677.44 | NI3TA (x(Ta) 0.25785) + NI2TA_C11B (x(Ta) 0.34291) + LIQUID (x(Ta) 0.34803) |
| NiTa-19Zho.tdb | 1645.58 | FCC_A1 (x(Ta) 0.13682) + LIQUID (x(Ta) 0.15183) + NI3TA (x(Ta) 0.23702) |
| NiTa-19Zho.tdb | 1642.65 | NI2TA_C11B (x(Ta) 0.37152) + LIQUID (x(Ta) 0.41289) + NITA_D85 (x(Ta) 0.53082) |
| NiTa-20Yan.tdb | 2059.96 | LIQUID (x(Ta) 0.58866) + NITA2_C16 (x(Ta) 0.70916) + BCC_A2 (x(Ta) 0.85828) |
| NiTa-20Yan.tdb | 1859.72 | LIQUID (x(Ta) 0.52196) + NITA_D85 (x(Ta) 0.58419) + NITA2_C16 (x(Ta) 0.68296) |
| NiTa-20Yan.tdb | 1677.49 | NI3TA (x(Ta) 0.25782) + NI2TA_C11B (x(Ta) 0.34348) + LIQUID (x(Ta) 0.34784) |
| NiTa-20Yan.tdb | 1645.45 | FCC_A1 (x(Ta) 0.1369) + LIQUID (x(Ta) 0.15192) + NI3TA (x(Ta) 0.23704) |
| NiTa-20Yan.tdb | 1642.61 | NI2TA_C11B (x(Ta) 0.3749) + LIQUID (x(Ta) 0.41487) + NITA_D85 (x(Ta) 0.53263) |
| NiTa-94Ans.tdb | 2058.91 | LIQUID (x(Ta) 0.57885) + NITA2_C16 (x(Ta) 0.66667) + BCC_A2 (x(Ta) 0.78874) |
| NiTa-94Ans.tdb | 2058.91 | LIQUID (x(Ta) 0.57887) + NITA2_C16 (x(Ta) 0.66667) + BCC_A2 (x(Ta) 0.78876) |
| NiTa-94Ans.tdb | 1843.53 | LIQUID (x(Ta) 0.48014) + NITA_D85 (x(Ta) 0.5) + NITA2_C16 (x(Ta) 0.66667) |
| NiTa-94Ans.tdb | 1843.53 | LIQUID (x(Ta) 0.48004) + NITA_D85 (x(Ta) 0.5) + NITA2_C16 (x(Ta) 0.66667) |
| NiTa-94Ans.tdb | 1843.53 | LIQUID (x(Ta) 0.48019) + NITA_D85 (x(Ta) 0.5) + NITA2_C16 (x(Ta) 0.66667) |
| NiTa-94Ans.tdb | 1676.37 | NI3TA (x(Ta) 0.25) + NI2TA_C11B (x(Ta) 0.33333) + LIQUID (x(Ta) 0.35728) |
| NiTa-94Ans.tdb | 1676.37 | NI3TA (x(Ta) 0.25) + NI2TA_C11B (x(Ta) 0.33333) + LIQUID (x(Ta) 0.35732) |
| NiTa-94Ans.tdb | 1676.37 | NI3TA (x(Ta) 0.25) + NI2TA_C11B (x(Ta) 0.33333) + LIQUID (x(Ta) 0.35724) |
| NiTa-94Ans.tdb | 1673.99 | NI2TA_C11B (x(Ta) 0.33333) + LIQUID (x(Ta) 0.36173) + NITA_D85 (x(Ta) 0.5) |
| NiTa-94Ans.tdb | 1673.99 | NI2TA_C11B (x(Ta) 0.33333) + LIQUID (x(Ta) 0.36165) + NITA_D85 (x(Ta) 0.5) |
| NiTa-94Ans.tdb | 1673.99 | NI2TA_C11B (x(Ta) 0.33333) + LIQUID (x(Ta) 0.36177) + NITA_D85 (x(Ta) 0.5) |
| NiTa-94Ans.tdb | 1641.47 | FCC_A1 (x(Ta) 0.13606) + LIQUID (x(Ta) 0.14618) + NI3TA (x(Ta) 0.25) |
| NiTa-94Ans.tdb | 1641.47 | FCC_A1 (x(Ta) 0.13564) + LIQUID (x(Ta) 0.14575) + NI3TA (x(Ta) 0.25) |
| NiTa-94Ans.tdb | 1555 | NI8TA (x(Ta) 0.11111) + FCC_A1 (x(Ta) 0.12774) + NI3TA (x(Ta) 0.25) |
| NiTa-94Ans.tdb | 1555 | NI8TA (x(Ta) 0.11111) + FCC_A1 (x(Ta) 0.12771) + NI3TA (x(Ta) 0.25) |
| NiTa-99Cui-LB.tdb | 2067.1 | LIQUID (x(Ta) 0.59515) + NITA2_C16 (x(Ta) 0.69231) + BCC_A2 (x(Ta) 0.78887) |
| NiTa-99Cui-LB.tdb | 1842.78 | LIQUID (x(Ta) 0.49273) + NITA_D85 (x(Ta) 0.53058) + NITA2_C16 (x(Ta) 0.6688) |
| NiTa-99Cui-LB.tdb | 1676.31 | NI3TA (x(Ta) 0.27144) + NI2TA_C11B (x(Ta) 0.33333) + LIQUID (x(Ta) 0.35467) |
| NiTa-99Cui-LB.tdb | 1676.31 | NI3TA (x(Ta) 0.27149) + NI2TA_C11B (x(Ta) 0.33333) + LIQUID (x(Ta) 0.3548) |
| NiTa-99Cui-LB.tdb | 1663.25 | NI2TA_C11B (x(Ta) 0.33333) + LIQUID (x(Ta) 0.37313) + NITA_D85 (x(Ta) 0.50035) |
| NiTa-99Cui-LB.tdb | 1627.39 | FCC_A1 (x(Ta) 0.11351) + LIQUID (x(Ta) 0.13902) + NI3TA (x(Ta) 0.23036) |
| NiTa-99Cui-LB.tdb | 1580.56 | NI8X (x(Ta) 0.11111) + FCC_A1 (x(Ta) 0.11139) + NI3TA (x(Ta) 0.23084) |
| NiTa-99Cui-LB.tdb | 1580.56 | NI8X (x(Ta) 0.11111) + FCC_A1 (x(Ta) 0.11137) + NI3TA (x(Ta) 0.23084) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/NI/NI-TA.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/NI/NI-TA.json) · [CALPHAD hull NiTa-09Zho](https://data.orchid-project.org/hulls/calphad-sgte/NI/NI-TA--NiTa-09Zho.json) · [CALPHAD hull NiTa-18Cac](https://data.orchid-project.org/hulls/calphad-sgte/NI/NI-TA--NiTa-18Cac.json) · [CALPHAD hull NiTa-18Zho](https://data.orchid-project.org/hulls/calphad-sgte/NI/NI-TA--NiTa-18Zho.json) · [CALPHAD hull NiTa-19Zho](https://data.orchid-project.org/hulls/calphad-sgte/NI/NI-TA--NiTa-19Zho.json) · [CALPHAD hull NiTa-94Ans](https://data.orchid-project.org/hulls/calphad-sgte/NI/NI-TA--NiTa-94Ans.json) · [CALPHAD hull NiTa-99Cui-LB](https://data.orchid-project.org/hulls/calphad-sgte/NI/NI-TA--NiTa-99Cui-LB.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Ni–Ta system (87)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 2067 | liq + bcc -> C16-NiTa2 | liq: Ta 0.595; bcc: Ta 0.788; C16: Ta 0.692 | model | [1] Zhou 2009; _cites Cui 1999_ | Table 7, p. 8, row 2; `ORC-42XAT55KJZ` |  |
| 2061.15 | peritectic: liquid + bcc - A2 -> NiTa2 | NiTa2: Ta 0.666667 | unspecified | [2] Ansara 1994; _cites ref. 84Nas_ | Table II, p. 5, row 10; `ORC-7GYTDGTAE4` |  |
| 2061 | liq. + bcc(Ta) -> NiTa2 | L: Ta 0.589; bcc(Ta): Ta 0.858; NiTa2: Ta 0.709 | model | [3] Zhou 2018 | Table 7, p. 11, row 26; `ORC-4R67F25JHG` |  |
| 2061 | liq + bcc -> C16-NiTa2 | C16-NiTa2: Ni 0.333333, Ta 0.666667 | experimental | [1] Zhou 2009; _cites Kornilov 1962_ | Table 7, p. 8, row 4; `ORC-7OG4QGLAKN` |  |
| 2061 | liq. + bcc(Ta) -> NiTa2 | L: Ta 0.543; bcc(Ta): Ta 0.8; NiTa2: Ta 0.675 | experimental | [3] Zhou 2018; _cites Kornilov 1962_ | Table 7, p. 11, row 24; `ORC-ARBM4EU2WF` |  |
| 2060 | liq + bcc -> C16-NiTa2 | liq: Ta 0.551; bcc: Ta 0.791; C16: Ta 0.708 | model | [1] Zhou 2009 | Table 7, p. 8, row 1; `ORC-CLMHOJSLT2` |  |
| 2059.15 | peritectic: liquid + bcc - A2 -> NiTa2 | liquid: Ta 0.578; bcc - A2: Ta 0.788; NiTa2: Ta 0.666 | unspecified | [2] Ansara 1994 | Table II, p. 5, row 9; `ORC-XKJF74QDVC` |  |
| 2058.15 | peritectic |  | experimental | [2] Ansara 1994; _cites ref. 62Kor_ | p. 1; `ORC-4VLHP4OROM.4bac39` | “\[62Kor\] identified N'T I a and NiTa as products obtained by peritectic reactions at 1570 and 1785°C respectively.” |
| 2051 | liq + bcc -> C16-NiTa2 | liq: Ta 0.559; bcc: Ta 0.799; C16: Ta 0.711 | model | [1] Zhou 2009; _cites Pan 2002_ | Table 7, p. 8, row 3; `ORC-V47VAIWZML` |  |
| 1851 | liq + C16Ta2 -> μ-NiTa | liq: Ta 0.486; C16: Ta 0.674; μ: Ta 0.53 | model | [1] Zhou 2009; _cites Pan 2002_ | Table 7, p. 8, row 7; `ORC-NMS2ERLK6T` |  |
| 1844 | liq. + NiTa2 -> μ-NiTa | NiTa2: Ni 0.333333, Ta 0.666667; μ-NiTa: Ni 0.5, Ta 0.5 | experimental | [3] Zhou 2018; _cites Therkelsen 1933_ | Table 7, p. 11, row 19; `ORC-GVYGDR4X76` |  |
| 1844 | liq + C16Ta2 -> μ-NiTa | C16Ta2: Ni 0.333333, Ta 0.666667; μ-NiTa: Ni 0.5, Ta 0.5 | experimental | [1] Zhou 2009; _cites Therkelsen 1933_ | Table 7, p. 8, row 8; `ORC-R42RUOIL2G` |  |
| 1843.15 | peritectic |  | experimental | [2] Ansara 1994; _cites ref. 62Kor_ | p. 1; `ORC-4VLHP4OROM.4b9faa` | “\[62Kor\] identified N'T I a and NiTa as products obtained by peritectic reactions at 1570 and 1785°C respectively.” |
| 1843.15 | peritectic: liquid + NiTa2 -> NiTa | NiTa2: Ta 0.666667; NiTa: Ta 0.5 | unspecified | [2] Ansara 1994; _cites ref. 84Nas_ | Table II, p. 5, row 8; `ORC-B3MDRYQMIL` |  |
| 1843.15 | peritectic: liquid + NiTa2 -> NiTa | liquid: Ta 0.48; NiTa2: Ta 0.666; NiTa: Ta 0.5 | unspecified | [2] Ansara 1994 | Table II, p. 5, row 7; `ORC-FCB7XFDHOL` |  |
| 1843 | liq + C16Ta2 -> μ-NiTa | C16Ta2: Ni 0.333333, Ta 0.666667; μ-NiTa: Ni 0.5, Ta 0.5 | experimental | [1] Zhou 2009; _cites Kornilov 1962_ | Table 7, p. 8, row 10; `ORC-CXC7BQIXAY` |  |
| 1843 | liq. + NiTa2 -> μ-NiTa | L: Ta 0.517; NiTa2: Ta 0.681; μ-NiTa: Ta 0.572 | model | [3] Zhou 2018 | Table 7, p. 11, row 22; `ORC-VOA2IQU4PH` |  |
| 1843 | liq. + NiTa2 -> μ-NiTa | L: Ta 0.489; NiTa2: Ta 0.667; μ-NiTa: Ta 0.51 | experimental | [3] Zhou 2018; _cites Kornilov 1962_ | Table 7, p. 11, row 21; `ORC-YEIWYJSXUC` |  |
| 1842 | liq + C16Ta2 -> μ-NiTa | liq: Ta 0.493; C16: Ta 0.667; μ: Ta 0.531 | model | [1] Zhou 2009; _cites Cui 1999_ | Table 7, p. 8, row 6; `ORC-EAMNKV36OI` |  |
| 1842 | liq + C16Ta2 -> μ-NiTa | liq: Ta 0.471; C16: Ta 0.679; μ: Ta 0.574 | model | [1] Zhou 2009 | Table 7, p. 8, row 5; `ORC-L5B4LWSW7E` |  |
| 1824 | congruent melting: liq -> κ-Ni3Ta | liq: Ta 0.25; κ: Ta 0.25 | model | [1] Zhou 2009; _cites Pan 2002_ | Table 7, p. 8, row 13; `ORC-QCFP4CWJGK` |  |
| 1817 | liq + C16Ta2 -> μ-NiTa | C16Ta2: Ni 0.333333, Ta 0.666667; μ-NiTa: Ni 0.5, Ta 0.5 | experimental | [1] Zhou 2009; _cites Kubaschewski 1949_ | Table 7, p. 8, row 9; `ORC-SDJGHDWCNU` |  |
| 1815 | congruent melting: liq -> κ-Ni3Ta | liq: Ni 0.75, Ta 0.25; κ-Ni3Ta: Ni 0.75, Ta 0.25 | experimental | [1] Zhou 2009; _cites Kubaschewski 1949_ | Table 7, p. 8, row 15; `ORC-6PWUHP35SW` |  |
| 1814 | congruent melting: liq. -> Ni3Ta | L: Ni 0.75, Ta 0.25; Ni3Ta: Ni 0.75, Ta 0.25 | experimental | [3] Zhou 2018; _cites Therkelsen 1933_ | Table 7, p. 11, row 6; `ORC-FJBIQZ27FD` |  |
| 1814 | congruent melting: liq -> κ-Ni3Ta | liq: Ni 0.75, Ta 0.25; κ-Ni3Ta: Ni 0.75, Ta 0.25 | experimental | [1] Zhou 2009; _cites Therkelsen 1933_ | Table 7, p. 8, row 14; `ORC-HUP3VXBNNF` |  |
| 1813 | congruent melting: liq. -> Ni3Ta | L: Ta 0.245; Ni3Ta: Ta 0.245 | experimental | [3] Zhou 2018; _cites Kubaschewski 1949_ | Table 7, p. 11, row 7; `ORC-NNREULR3JO` |  |
| 1810 | congruent melting: liq. -> Ni3Ta | L: Ta 0.25; Ni3Ta: Ta 0.25 | model | [3] Zhou 2018 | Table 7, p. 11, row 9; `ORC-RLHJXXU2HN` |  |
| 1810 | congruent melting: liq -> κ-Ni3Ta | liq: Ta 0.25; κ: Ta 0.25 | model | [1] Zhou 2009; _cites Cui 1999_ | Table 7, p. 8, row 12; `ORC-RNDW6AGNC4` |  |
| 1808 | congruent melting: liq. -> Ni3Ta | L: Ta 0.25; Ni3Ta: Ta 0.25 | experimental | [3] Zhou 2018; _cites Kornilov 1962_ | Table 7, p. 11, row 8; `ORC-RDNXYBTMO5` |  |
| 1808 | congruent melting: liq -> κ-Ni3Ta | liq: Ni 0.75, Ta 0.25; κ-Ni3Ta: Ni 0.75, Ta 0.25 | experimental | [1] Zhou 2009; _cites Kornilov 1962_ | Table 7, p. 8, row 16; `ORC-TALPPK4YIY` |  |
| 1805 | congruent melting: liq -> κ-Ni3Ta | liq: Ta 0.25; κ: Ta 0.25 | model | [1] Zhou 2009 | Table 7, p. 8, row 11; `ORC-P4N4WNQGNO` |  |
| 1798 | liq. + NiTa2 -> μ-NiTa | L: Ta 0.576; NiTa2: Ni 0.333333, Ta 0.666667; μ-NiTa: Ni 0.5, Ta 0.5 | experimental | [3] Zhou 2018; _cites Kubaschewski 1949_ | Table 7, p. 11, row 20; `ORC-2HZYVUT5SZ` |  |
| 1678.15 | peritectic: liquid + Ni3Ta -> Ni2Ta | Ni3Ta: Ta 0.25; Ni2Ta: Ta 0.333333 | unspecified | [2] Ansara 1994; _cites ref. 84Nas_ | Table II, p. 5, row 4; `ORC-ZB22CGP3IB` |  |
| 1678 | liq + κ-Ni3Ta -> C11b-Ni2Ta | κ-Ni3Ta: Ni 0.75, Ta 0.25; C11b-Ni2Ta: Ni 0.666667, Ta 0.333333 | experimental | [1] Zhou 2009; _cites Kornilov 1962_ | Table 7, p. 8, row 28; `ORC-G33ZURBHJQ` |  |
| 1678 | eutectic: liq -> μ-NiTa + C11b-Ni2Ta | liq: Ta 0.367; μ: Ta 0.502; C11b: Ta 0.344 | model | [1] Zhou 2009 | Table 7, p. 8, row 29; `ORC-K5YL45KUAG` |  |
| 1678 | liq. + Ni3Ta -> Ni2Ta | L: Ta 0.35; Ni3Ta: Ta 0.285; Ni2Ta: Ta 0.34 | experimental | [3] Zhou 2018; _cites Kornilov 1962_ | Table 7, p. 11, row 11; `ORC-LXMVMHJXZ5` |  |
| 1678 | liq + κ-Ni3Ta -> C11b-Ni2Ta | liq: Ta 0.366; κ: Ta 0.253; C11b: Ta 0.344 | model | [1] Zhou 2009 | Table 7, p. 8, row 23; `ORC-XKDSHP4V3L` |  |
| 1677 | liq. + Ni3Ta -> Ni2Ta | Ni3Ta: Ni 0.75, Ta 0.25; Ni2Ta: Ni 0.666667, Ta 0.333333 | experimental | [3] Zhou 2018 | Table 7, p. 11, row 12; `ORC-VYFSQW6KMB` |  |
| 1677 | liq. + Ni3Ta -> Ni2Ta | L: Ta 0.348; Ni3Ta: Ta 0.258; Ni2Ta: Ta 0.339 | model | [3] Zhou 2018 | Table 7, p. 11, row 13; `ORC-XHUJ52JVOT` |  |
| 1676.15 | peritectic: liquid + Ni3Ta -> Ni2Ta | liquid: Ta 0.357; Ni3Ta: Ta 0.25; Ni2Ta: Ta 0.333 | unspecified | [2] Ansara 1994 | Table II, p. 5, row 3; `ORC-HPGURPVEIR` |  |
| 1676 | liq + κ-Ni3Ta -> C11b-Ni2Ta | liq: Ta 0.355; κ: Ta 0.271; C11b: Ta 0.333 | model | [1] Zhou 2009; _cites Cui 1999_ | Table 7, p. 8, row 24; `ORC-3SUAGFZKYR` |  |
| 1674.15 | eutectic: liquid -> Ni2Ta + NiTa | liquid: Ta 0.362; Ni2Ta: Ta 0.333; NiTa: Ta 0.5 | unspecified | [2] Ansara 1994 | Table II, p. 5, row 5; `ORC-EGVLRHMCNG` |  |
| 1673 | liq + κ-Ni3Ta -> C11b-Ni2Ta | κ-Ni3Ta: Ni 0.75, Ta 0.25; C11b-Ni2Ta: Ni 0.666667, Ta 0.333333 | experimental | [1] Zhou 2009; _cites Kubaschewski 1949_ | Table 7, p. 8, row 27; `ORC-JDMNGOFVVY` |  |
| 1666 | eutectic: liq -> fcc + κ-Ni3Ta | liq: Ta 0.144; fcc: Ta 0.137; κ: Ta 0.241 | model | [1] Zhou 2009 | Table 7, p. 8, row 17; `ORC-2GNDXCM7TV` |  |
| 1663 | eutectic: liq -> μ-NiTa + C11b-Ni2Ta | liq: Ta 0.373; μ: Ta 0.5; C11b: Ta 0.333 | model | [1] Zhou 2009; _cites Cui 1999_ | Table 7, p. 8, row 30; `ORC-YWZUYLMNPS` |  |
| 1662 | liq + κ-Ni3Ta -> C11b-Ni2Ta | liq: Ta 0.357; κ: Ta 0.279; C11b: Ta 0.341 | model | [1] Zhou 2009; _cites Pan 2002_ | Table 7, p. 8, row 25; `ORC-GM4OOFEZOP` |  |
| 1647 | eutectic: liq -> μ-NiTa + C11b-Ni2Ta | liq: Ta 0.381; μ: Ta 0.504; C11b: Ta 0.349 | model | [1] Zhou 2009; _cites Pan 2002_ | Table 7, p. 8, row 31; `ORC-FKU4RFXV4V` |  |
| 1645 | eutectic: liq. -> fcc(Ni) + Ni3Ta | L: Ta 0.152; fcc(Ni): Ta 0.137; Ni3Ta: Ta 0.238 | model | [3] Zhou 2018 | Table 7, p. 11, row 5; `ORC-DLW5SO6AQX` |  |
| 1645 | eutectic: liq. -> fcc(Ni) + Ni3Ta | Ni3Ta: Ni 0.75, Ta 0.25 | experimental | [3] Zhou 2018 | Table 7, p. 11, row 4; `ORC-I427N2767M` |  |
| 1643 | eutectic: liq. -> Ni2Ta + μ-NiTa | Ni2Ta: Ni 0.666667, Ta 0.333333; μ-NiTa: Ni 0.5, Ta 0.5 | experimental | [3] Zhou 2018 | Table 7, p. 11, row 17; `ORC-3JXKT6HCTE` |  |
| 1643 | eutectic: liq. -> Ni2Ta + μ-NiTa | L: Ta 0.402; Ni2Ta: Ta 0.354; μ-NiTa: Ta 0.515 | model | [3] Zhou 2018 | Table 7, p. 11, row 18; `ORC-VVZVWXC5PY` |  |
| 1643 | eutectic: liq -> fcc + κ-Ni3Ta | κ-Ni3Ta: Ni 0.75, Ta 0.25 | experimental | [1] Zhou 2009; _cites Kubaschewski 1949_ | Table 7, p. 8, row 21; `ORC-YM447RIB4W` |  |
| 1641.15 | eutectic: liquid -> fcc - A1 + Ni3Ta | liquid: Ta 0.146; fcc - A1: Ta 0.135; Ni3Ta: Ta 0.25 | unspecified | [2] Ansara 1994 | Table II, p. 5, row 1; `ORC-I5GWJYTR5G` |  |
| 1639 | eutectic: liq -> μ-NiTa + C11b-Ni2Ta | μ-NiTa: Ni 0.5, Ta 0.5; C11b-Ni2Ta: Ni 0.666667, Ta 0.333333 | experimental | [1] Zhou 2009; _cites Kubaschewski 1949_ | Table 7, p. 8, row 33; `ORC-LL3IXZRXXA` |  |
| 1638 | eutectic: liq. -> fcc(Ni) + Ni3Ta | L: Ta 0.161; fcc(Ni): Ta 0.129; Ni3Ta: Ta 0.206 | experimental | [3] Zhou 2018; _cites Kubaschewski 1949_ | Table 7, p. 11, row 2; `ORC-OMRZPRFVMS` |  |
| 1634 | eutectic: liq -> μ-NiTa + C11b-Ni2Ta | μ-NiTa: Ni 0.5, Ta 0.5; C11b-Ni2Ta: Ni 0.666667, Ta 0.333333 | experimental | [1] Zhou 2009; _cites Kornilov 1962_ | Table 7, p. 8, row 34; `ORC-3WTW54VQZO` |  |
| 1634 | eutectic: liq. -> Ni2Ta + μ-NiTa | L: Ta 0.36; Ni2Ta: Ta 0.35; μ-NiTa: Ta 0.5 | experimental | [3] Zhou 2018; _cites Kornilov 1962_ | Table 7, p. 11, row 16; `ORC-GJK35O3TI4` |  |
| 1633.15 | eutectic: liquid -> fcc - A1 + Ni3Ta | Ni3Ta: Ta 0.25 | unspecified | [2] Ansara 1994; _cites ref. 84Nas_ | Table II, p. 5, row 2; `ORC-DG7QG77POI` |  |
| 1633 | eutectic: liq -> fcc + κ-Ni3Ta | κ-Ni3Ta: Ni 0.75, Ta 0.25 | experimental | [1] Zhou 2009; _cites Kornilov 1962_ | Table 7, p. 8, row 22; `ORC-VUZYYQIZ7O` |  |
| 1633 | eutectic: liq. -> fcc(Ni) + Ni3Ta | L: Ta 0.172; Ni3Ta: Ni 0.75, Ta 0.25 | experimental | [3] Zhou 2018; _cites Kornilov 1953_ | Table 7, p. 11, row 3; `ORC-YVOPKRD7HH` |  |
| 1627 | eutectic: liq -> fcc + κ-Ni3Ta | liq: Ta 0.139; fcc: Ta 0.113; κ: Ta 0.23 | model | [1] Zhou 2009; _cites Cui 1999_ | Table 7, p. 8, row 18; `ORC-MDVXMVHNP5` |  |
| 1625 | eutectic: liq -> fcc + κ-Ni3Ta | liq: Ta 0.153; fcc: Ta 0.139; κ: Ta 0.242 | model | [1] Zhou 2009; _cites Pan 2002_ | Table 7, p. 8, row 19; `ORC-XAUA666OWR` |  |
| 1623.15 | eutectic: liquid -> Ni2Ta + NiTa | Ni2Ta: Ta 0.333333; NiTa: Ta 0.5 | unspecified | [2] Ansara 1994; _cites ref. 84Nas_ | Table II, p. 5, row 6; `ORC-CXK32YKRXG` |  |
| 1623 | eutectic: liq. -> Ni2Ta + μ-NiTa | L: Ta 0.428; Ni2Ta: Ta 0.371; μ-NiTa: Ni 0.5, Ta 0.5 | experimental | [3] Zhou 2018; _cites Kubaschewski 1949_ | Table 7, p. 11, row 15; `ORC-O4DS4GMZAW` |  |
| 1618 | liq + κ-Ni3Ta -> C11b-Ni2Ta | κ-Ni3Ta: Ni 0.75, Ta 0.25; C11b-Ni2Ta: Ni 0.666667, Ta 0.333333 | experimental | [1] Zhou 2009; _cites Therkelsen 1933_ | Table 7, p. 8, row 26; `ORC-6DBMIMKPT2` |  |
| 1618 | liq. + Ni3Ta -> Ni2Ta | Ni3Ta: Ni 0.75, Ta 0.25; Ni2Ta: Ni 0.666667, Ta 0.333333 | experimental | [3] Zhou 2018; _cites Therkelsen 1933_ | Table 7, p. 11, row 10; `ORC-HLROVMFJYG` |  |
| 1616 | eutectic: liq. -> fcc(Ni) + Ni3Ta | Ni3Ta: Ni 0.75, Ta 0.25 | experimental | [3] Zhou 2018; _cites Therkelsen 1933_ | Table 7, p. 11, row 1; `ORC-5HGLLPOSLR` |  |
| 1616 | eutectic: liq -> fcc + κ-Ni3Ta | κ-Ni3Ta: Ni 0.75, Ta 0.25 | experimental | [1] Zhou 2009; _cites Therkelsen 1933_ | Table 7, p. 8, row 20; `ORC-6HEOCLSWCY` |  |
| 1615 | eutectic: liq. -> Ni2Ta + μ-NiTa | Ni2Ta: Ni 0.666667, Ta 0.333333; μ-NiTa: Ni 0.5, Ta 0.5 | experimental | [3] Zhou 2018; _cites Therkelsen 1933_ | Table 7, p. 11, row 14; `ORC-RZFRB2H6QD` |  |
| 1615 | eutectic: liq -> μ-NiTa + C11b-Ni2Ta | μ-NiTa: Ni 0.5, Ta 0.5; C11b-Ni2Ta: Ni 0.666667, Ta 0.333333 | experimental | [1] Zhou 2009; _cites Therkelsen 1933_ | Table 7, p. 8, row 32; `ORC-Z6UWW2N4OE` |  |
| 1603.15 | eutectoid: fcc - A1 -> Ni8Ta + Ni3Ta | Ni8Ta: Ta 0.111111; Ni3Ta: Ta 0.25 | unspecified | [2] Ansara 1994; _cites ref. 84Nas_ | Table II, p. 5, row 12; `ORC-FGQ6WINWC5` |  |
| 1593 | polymorphic: fcc -> ζ-Ni8Ta | fcc: Ni 0.888889, Ta 0.111111; ζ-Ni8Ta: Ni 0.888889, Ta 0.111111 | experimental | [1] Zhou 2009; _cites Nash 1983_ [doi](https://doi.org/10.1179/030634583790427649) | Table 7, p. 8, row 39; `ORC-WX2DLQKJ4Q` |  |
| 1584 | polymorphic: fcc -> ζ-Ni8Ta | ζ-Ni8Ta: Ni 0.888889, Ta 0.111111 | model | [1] Zhou 2009; _cites Pan 2002_ | Table 7, p. 8, row 37; `ORC-JILCVQTNJK` |  |
| 1584 | polymorphic: fcc -> ζ-Ni8Ta | ζ-Ni8Ta: Ni 0.888889, Ta 0.111111 | model | [1] Zhou 2009 | Table 7, p. 8, row 35; `ORC-YFT6A7XLDE` |  |
| 1581 | polymorphic: fcc -> ζ-Ni8Ta | ζ-Ni8Ta: Ni 0.888889, Ta 0.111111 | model | [1] Zhou 2009; _cites Cui 1999_ | Table 7, p. 8, row 36; `ORC-JBQFENYNH2` |  |
| 1580 | fcc -> κ-Ni3Ta + ζ-Ni8Ta | fcc: Ta 0.1114; κ: Ta 0.231; ζ: Ta 0.1111 | model | [1] Zhou 2009; _cites Cui 1999_ | Table 7, p. 8, row 41; `ORC-TWEM4ARAFR` |  |
| 1573 | polymorphic: fcc -> ζ-Ni8Ta | fcc: Ni 0.888889, Ta 0.111111; ζ-Ni8Ta: Ni 0.888889, Ta 0.111111 | experimental | [1] Zhou 2009; _cites Pimenov 1977_ | Table 7, p. 8, row 38; `ORC-JSQ3TFGJWY` |  |
| 1572 | fcc -> κ-Ni3Ta + ζ-Ni8Ta | κ-Ni3Ta: Ni 0.75, Ta 0.25; ζ-Ni8Ta: Ni 0.888889, Ta 0.111111 | experimental | [1] Zhou 2009; _cites Kornilov 1953_ | Table 7, p. 8, row 43; `ORC-LP3XMNVBEC` |  |
| 1571 | fcc -> κ-Ni3Ta + ζ-Ni8Ta | fcc: Ta 0.126; κ: Ta 0.237; ζ: Ta 0.111 | model | [1] Zhou 2009 | Table 7, p. 8, row 40; `ORC-DHGDKMNA33` |  |
| 1555.15 | eutectoid: fcc - A1 -> Ni8Ta + Ni3Ta | fcc - A1: Ta 0.128; Ni8Ta: Ta 0.111; Ni3Ta: Ta 0.25 | unspecified | [2] Ansara 1994 | Table II, p. 5, row 11; `ORC-C6EW33LIKC` |  |
| 1547 | fcc -> κ-Ni3Ta + ζ-Ni8Ta | fcc: Ta 0.136; κ: Ta 0.242; ζ: Ta 0.111 | model | [1] Zhou 2009; _cites Pan 2002_ | Table 7, p. 8, row 42; `ORC-HNOEGAJXE2` |  |
| 603 | κ-Ni3Ta + C11b-Ni2Ta -> D022-Ni3Ta | κ: Ta 0.249; D022: Ta 0.25; C11b: Ta 0.329 | model | [1] Zhou 2009 | Table 7, p. 8, row 44; `ORC-WNKQ6OMXV7` |  |
| 600 | κ-Ni3Ta -> D022-Ni3Ta + ζ-Ni8Ta | κ: Ta 0.244; D022: Ta 0.25; ζ: Ta 0.111 | model | [1] Zhou 2009 | Table 7, p. 8, row 45; `ORC-DQID6HC7JU` |  |
| 474 | μ-NiTa -> C16-NiTa2 + C11b-Ni2Ta | μ: Ta 0.526; C16: Ta 0.666; C11b: Ta 0.334 | model | [1] Zhou 2009 | Table 7, p. 8, row 46; `ORC-LN7YFK5AB3` |  |
| 231 | κ-Ni3Ta -> ζ-Ni8Ta + C11b-Ni2Ta | κ: Ta 0.25; ζ: Ta 0.111; C11b: Ta 0.333 | model | [1] Zhou 2009; _cites Cui 1999_ | Table 7, p. 8, row 48; `ORC-VSHMMHI2M4` |  |
| 109 | μ-NiTa -> C16-NiTa2 + C11b-Ni2Ta | μ: Ta 0.504; C16: Ta 0.667; C11b: Ta 0.333 | model | [1] Zhou 2009; _cites Pan 2002_ | Table 7, p. 8, row 47; `ORC-F64C7HADMK` |  |
| 42 | κ-Ni3Ta -> ζ-Ni8Ta + C11b-Ni2Ta | κ: Ta 0.25; ζ: Ta 0.111; C11b: Ta 0.333 | model | [1] Zhou 2009; _cites Pan 2002_ | Table 7, p. 8, row 49; `ORC-KYPDTVSPC3` |  |

## Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from [dft_parity.json](https://data.orchid-project.org/literature/dft_parity.json).

Table: Enthalpies of formation, Ni–Ta system (52)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| C11b |  | -32.36 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 24; `ORC-VUIYVHJFEA.377a22` |  |
| C11b |  | 5 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 25; `ORC-ZHQSV7IXWI.339f50` |  |
| C11b |  | 7.91 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 23; `ORC-FZKNMC4SZ2.100207` |  |
| C11b |  | 10.49 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 26; `ORC-VSC4UEAVSD.537765` |  |
| C16 |  | -21.15 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 15; `ORC-2GAQDY3VZS.8ec844` |  |
| C16 |  | 26.77 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 13; `ORC-R6FL7GKINS.75cce1` |  |
| C16 |  | 44.14 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 14; `ORC-333BU3QMFN.20e65b` |  |
| C16 |  | 50.88 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 16; `ORC-Y6IDLUG3I3.36c7fe` |  |
| D022 |  | -35.29 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 43; `ORC-FZVSCUVH7Z.962602` |  |
| D0a |  | -34.81 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 40; `ORC-6SBNTK6HO4.c074e3` |  |
| D0a |  | 12.48 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 41; `ORC-YZNYJAYX5M.3ed050` |  |
| D0a |  | 30.8 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 42; `ORC-6A6CEUBZQC.fa27da` |  |
| Mo3Mo |  | 41.09 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 37; `ORC-SSXKUHE3IV.c48c4c` |  |
| Ni1Ni2 |  | 26.77 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 13; `ORC-R6FL7GKINS.b7ec0a` |  |
| Ni1Ta2 |  | -21.15 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 15; `ORC-2GAQDY3VZS.b4a362` |  |
| Ni2Ni |  | 7.91 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 23; `ORC-FZKNMC4SZ2.c243bf` |  |
| Ni2Ta |  | -32.36 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 24; `ORC-VUIYVHJFEA.a98450` |  |
| Ni3Ni |  | 3.5 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 31; `ORC-MR7GIVKRHG.ac67dc` |  |
| Ni3Ta |  | -35.29 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 43; `ORC-FZVSCUVH7Z.81ad1d` |  |
| Ni3Ta |  | -34.81 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 40; `ORC-6SBNTK6HO4.44a846` |  |
| Ni3Ta |  | -29.29 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 32; `ORC-BPEKARSRDH.36903a` |  |
| Ni8Ta |  | -16.37 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 44; `ORC-YHSFSFYDGY.05d59d` |  |
| NiTa4Ni2Ni6 |  | -12.92 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 17; `ORC-YKBZZRZWFY.26f2fa` |  |
| NiTa4Ta2Ni6 |  | -22.99 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 19; `ORC-L2SGSUKKSN.fd3a19` |  |
| Ta1Ni2 |  | 44.14 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 14; `ORC-333BU3QMFN.fbe3cb` |  |
| Ta1Ta2 |  | 50.88 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 16; `ORC-Y6IDLUG3I3.c171b9` |  |
| Ta2Ni |  | 5 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 25; `ORC-ZHQSV7IXWI.361e15` |  |
| Ta2Ta |  | 10.49 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 26; `ORC-VSC4UEAVSD.961efb` |  |
| Ta3Ni |  | 12.48 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 41; `ORC-YZNYJAYX5M.b2aa6a` |  |
| Ta3Ni |  | 12.54 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 33; `ORC-XWZAORI54N.6ec17f` |  |
| Ta3Ta |  | 29.32 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 34; `ORC-MYTGEWLTXE.398a8c` |  |
| Ta3Ta |  | 30.8 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 42; `ORC-6A6CEUBZQC.a90e54` |  |
| TaTa4Mo2Ni6 |  | -17.52 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 22; `ORC-I2MWA253S7.0a4874` |  |
| TaTa4Ni2Ni6 |  | -18.61 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 18; `ORC-ENOYXH55WA.47b3f0` |  |
| TaTa4Ta2Ni6 |  | -25.51 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 20; `ORC-KP6PEL7DOG.d78c9d` |  |
| TaTa4Ta2Ta6 |  | 17.05 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 21; `ORC-LNRBDOYEZ4.4cece7` |  |
| ζ |  | -16.37 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 44; `ORC-YHSFSFYDGY.214f28` |  |
| κ |  | -29.29 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 32; `ORC-BPEKARSRDH.c1996e` |  |
| κ |  | -1.86 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 38; `ORC-R4AY5X6IM3.ed7637` |  |
| κ |  | 3.5 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 31; `ORC-MR7GIVKRHG.32080f` |  |
| κ |  | 12.54 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 33; `ORC-XWZAORI54N.d62fad` |  |
| κ |  | 18.85 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 39; `ORC-EXQUNEL3PS.29abcc` |  |
| κ |  | 29.32 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 34; `ORC-MYTGEWLTXE.a7060b` |  |
| κ |  | 32.08 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 35; `ORC-GWWEVMKERC.3a5176` |  |
| κ |  | 36.6 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 36; `ORC-KDDQUBQQJS.17dc57` |  |
| κ |  | 41.09 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 37; `ORC-SSXKUHE3IV.ff3f90` |  |
| μ |  | -25.51 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 20; `ORC-KP6PEL7DOG.933169` |  |
| μ |  | -22.99 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 19; `ORC-L2SGSUKKSN.220eb7` |  |
| μ |  | -18.61 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 18; `ORC-ENOYXH55WA.e46f19` |  |
| μ |  | -17.52 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 22; `ORC-I2MWA253S7.153ac0` |  |
| μ |  | -12.92 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 17; `ORC-YKBZZRZWFY.15c967` |  |
| μ |  | 17.05 kJ/mol-atom |  | DFT |  |  | [1] Zhou 2009 | Table 6, p. 7, row 21; `ORC-LNRBDOYEZ4.84db5f` |  |

## Other properties

### Phase transition (17)

Table: Phase transition, Ni–Ta system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 600 K | 600 | κ-Ni3Ta + D022-Ni3Ta | model | [1] Zhou 2009 | p. 6; `ORC-VBB52QV7MG` | “Without specific experimental data indicating the exact temperature of the transition, we assume a temperature of 600 K for the transition from the high temperature stable compound κ -Ni3 Ta (i.e.κ -Ni3 (Mo, Ta) \[6,7,10-12,15,16\] to the low temperature stable D022 -Ni3 Ta phase.” |
| Phase transition | 1578.15 K | 1578.15 | congruent transformation: fcc - al -> Ni8Ta; _fcc - al: Ta 0.111; Ni8Ta: Ta 0.111_ | unspecified | [2] Ansara 1994 | Table II, p. 5, row 13; `ORC-DC7JEBQ5EH` |  |
| Phase transition | 1641 K | 1641 | eutectic: liq. → fcc(Ni) + Ni3Ta | experimental | [3] Zhou 2018 | Table 5, p. 8, row 6; `ORC-A3CGQISTFA` |  |
| Phase transition | 1642 K | 1642 | eutectic: liq. → Ni2Ta + μ-NiTa | experimental | [3] Zhou 2018 | Table 5, p. 8, row 10; `ORC-2NF2LFTMFD` |  |
| Phase transition | 1642 K | 1642 | eutectic: liq. → Ni2Ta + μ-NiTa | experimental | [3] Zhou 2018 | Table 5, p. 8, row 11; `ORC-V2IILGR24A` |  |
| Phase transition | 1643 K | 1643 | eutectic: liq. → Ni2Ta + μ-NiTa | experimental | [3] Zhou 2018 | Table 5, p. 8, row 12; `ORC-KAJEEU3ILE` |  |
| Phase transition | 1644 K | 1644 | eutectic: liq. → Ni2Ta + μ-NiTa | experimental | [3] Zhou 2018 | Table 5, p. 8, row 13; `ORC-RPY3SPVSMX` |  |
| Phase transition | 1644 K | 1644 | eutectic: liq. → fcc(Ni) + Ni3Ta | experimental | [3] Zhou 2018 | Table 5, p. 8, row 7; `ORC-GBITUPXI2Q` |  |
| Phase transition | 1645 K | 1645 | eutectic: liq. → fcc(Ni) + Ni3Ta | experimental | [3] Zhou 2018 | Table 5, p. 8, row 2; `ORC-IYY46NAZJG` |  |
| Phase transition | 1649 K | 1649 | eutectic: liq. → fcc(Ni) + Ni3Ta | experimental | [3] Zhou 2018 | Table 5, p. 8, row 4; `ORC-YCESLZD75W` |  |
| Phase transition | 1670 K | 1670 | other: B5 | experimental | [3] Zhou 2018 | Table 5, p. 8, row 1; `ORC-6JVVUEHEL7` |  |
| Phase transition | 1671 K | 1671 | other: B5 | experimental | [3] Zhou 2018 | Table 5, p. 8, row 3; `ORC-XMJWETI437` |  |
| Phase transition | 1676 K | 1676 | peritectic: liq. + Ni3Ta → Ni2Ta | experimental | [3] Zhou 2018 | Table 5, p. 8, row 8; `ORC-OP3HXEMKYU` |  |
| Phase transition | 1678 K | 1678 | peritectic: liq. + Ni3Ta → Ni2Ta | experimental | [3] Zhou 2018 | Table 5, p. 8, row 9; `ORC-II5QX7ZOIB` |  |
| Phase transition | 1703 K | 1703 | other: B6 | experimental | [3] Zhou 2018 | Table 5, p. 8, row 5; `ORC-DCT7M4RY5O` |  |
| Phase transition | 1820.15 K | 1820.15 | congruent melting: liquid -> Ni3Ta; _liquid: Ta 0.25; Ni3Ta: Ta 0.25_ | unspecified | [2] Ansara 1994 | Table II, p. 5, row 14; `ORC-6FUJP6FAUK` |  |
| Phase transition | 1823.15 K | 1823.15 | congruent melting: liquid -> Ni3Ta; _liquid: Ta 0.25; Ni3Ta: Ta 0.25_ | unspecified | [2] Ansara 1994; _cites ref. 84Nas_ | Table II, p. 5, row 15; `ORC-OUUFFWHRKA` |  |

### Phase equilibrium (24)

Table: Phase equilibrium, Ni–Ta system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase composition |  |  | Ni2Ta + μ-NiTa; _Ni2Ta: Ni 0.665, Ta 0.335_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 6; `ORC-BNJ7ABV7MB` |  |
| Phase composition |  |  | Ni2Ta + μ-NiTa; _Ni2Ta: Ni 0.667, Ta 0.333_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 7; `ORC-C6J6GMKSCD` |  |
| Phase composition |  |  | Ni3Ta + Ni2Ta + μ-NiTa; _Ni3Ta: Ni 0.746, Ta 0.254_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 5; `ORC-KCURXG5VVR` |  |
| Phase composition |  |  | Ni3Ta + fcc(Ni); _Ni3Ta: Ni 0.757, Ta 0.243_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 4; `ORC-5FETEWL4WT` |  |
| Phase composition |  |  | Ni3Ta + fcc(Ni); _Ni3Ta: Ni 0.765, Ta 0.235_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 3; `ORC-KSZAYK22U2` |  |
| Phase composition |  |  | NiTa2 + μ-NiTa; _NiTa2: Ni 0.375, Ta 0.625_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 11; `ORC-UA54Q666JB` |  |
| Phase composition |  |  | NiTa2 + μ-NiTa + Ni2Ta; _NiTa2: Ni 0.394, Ta 0.607_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 10; `ORC-KVNMEE2I4Y` |  |
| Phase composition |  |  | bcc(Ta) + NiTa2 + μ-NiTa; _bcc(Ta): Ni 0.027, Ta 0.973_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 12; `ORC-47CMRFCESN` |  |
| Phase composition |  |  | fcc(Ni); _fcc(Ni): Ni 0.918, Ta 0.082_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 1; `ORC-H6DPKU642Z` |  |
| Phase composition |  |  | fcc(Ni) + Ni3Ta; _fcc(Ni): Ni 0.857, Ta 0.143_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 2; `ORC-KN5BR6JOJY` |  |
| Phase composition |  |  | μ-NiTa + Ni2Ta; _μ-NiTa: Ni 0.478, Ta 0.522_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 9; `ORC-IQKO6WDNF7` |  |
| Phase composition |  |  | μ-NiTa + Ni2Ta; _μ-NiTa: Ni 0.507, Ta 0.493_ | experimental | [3] Zhou 2018 | Table 3, p. 3, row 8; `ORC-MKX5QJKW36` |  |
| Phase composition |  | 1473 | Ni2Ta + μ-NiTa; _Ni2Ta: Ni 0.66, Ta 0.34; μ-NiTa: Ni 0.482, Ta 0.518_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 9; `ORC-62HDR4MIQA` |  |
| Phase composition |  | 1473 | Ni2Ta + μ-NiTa; _Ni2Ta: Ni 0.657, Ta 0.343; μ-NiTa: Ni 0.483, Ta 0.517_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 10; `ORC-Y3YWRMPINB` |  |
| Phase composition |  | 1473 | Ni3Ta + Ni2Ta; _Ni3Ta: Ni 0.757, Ta 0.244; Ni2Ta: Ni 0.666, Ta 0.335_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 8; `ORC-UM7YFXBHG7` |  |
| Phase composition |  | 1473 | NiTa2 + bcc(Ta); _NiTa2: Ni 0.296, Ta 0.704; bcc(Ta): Ni 0.011, Ta 0.989_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 12; `ORC-TQ7RFRF74M` |  |
| Phase composition |  | 1473 | fcc(Ni); _fcc(Ni): Ni 0.881, Ta 0.119_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 3; `ORC-2HIO3DMG73` |  |
| Phase composition |  | 1473 | fcc(Ni); _fcc(Ni): Ni 0.902, Ta 0.099_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 1; `ORC-NEDVJIZEN7` |  |
| Phase composition |  | 1473 | fcc(Ni); _fcc(Ni): Ni 0.894, Ta 0.106_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 2; `ORC-UFRCCVX25Y` |  |
| Phase composition |  | 1473 | fcc(Ni) + Ni3Ta; _fcc(Ni): Ni 0.882, Ta 0.118; Ni3Ta: Ni 0.768, Ta 0.232_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 4; `ORC-AGBVJUV46K` |  |
| Phase composition |  | 1473 | fcc(Ni) + Ni3Ta; _fcc(Ni): Ni 0.878, Ta 0.122; Ni3Ta: Ni 0.767, Ta 0.233_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 5; `ORC-JQHMYIPRDO` |  |
| Phase composition |  | 1473 | fcc(Ni) + Ni3Ta; _fcc(Ni): Ni 0.877, Ta 0.123; Ni3Ta: Ni 0.762, Ta 0.238_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 7; `ORC-PRAL5VO5OI` |  |
| Phase composition |  | 1473 | fcc(Ni) + Ni3Ta; _fcc(Ni): Ni 0.876, Ta 0.124; Ni3Ta: Ni 0.763, Ta 0.237_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 6; `ORC-U33YZ45D7Y` |  |
| Phase composition |  | 1473 | μ-NiTa + NiTa2; _μ-NiTa: Ni 0.441, Ta 0.559; NiTa2: Ni 0.324, Ta 0.676_ | experimental | [3] Zhou 2018 | Table 4, p. 8, row 11; `ORC-F3KZN7QJVS` |  |

## Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

1. S.H. Zhou, Y. Wang, L.-Q. Chen, Z.-K. Liu, R.E. Napolitano, Solution-based thermodynamic modeling of the Ni–Ta and Ni–Mo–Ta systems using first-principle calculations, Calphad 33, 631-641 (2009). [doi:10.1016/j.calphad.2009.06.006](https://doi.org/10.1016/j.calphad.2009.06.006)
2. I. Ansara, M. Selleby, Thermodynamic analysis of the Ni-Ta system., Calphad 18, 99-107 (1994). [doi:10.1016/0364-5916(94)90011-6](https://doi.org/10.1016/0364-5916%2894%2990011-6)
3. Chenyang Zhou, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Ni–Ta system supported by the key experiments, Thermochimica Acta 666, 135-147 (2018). [doi:10.1016/j.tca.2018.06.011](https://doi.org/10.1016/j.tca.2018.06.011)

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569
- 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-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735891
- 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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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; 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_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@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_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).