# Co–Ta system

> Co–Ta system: 151 accepted literature values (invariant reaction 70, formation 33, phase equilibrium 24, phase transition 24) and 6 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

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

151 accepted literature values from 4 paper(s) (experimental 76, model 34, DFT 33, unspecified 8); 6 calculated phase diagram(s). 8 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/CO-TA.json) · [CSV](https://data.orchid-project.org/systems/CO-TA.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CO-TA) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#CO-TA/CoTa-02Har.json) · [phases (19)](https://data.orchid-project.org/phases/pages/CO-TA.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CO-TA.html) · [Markdown](https://data.orchid-project.org/systems/CO-TA.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 76 |
| model | 34 |
| DFT | 33 |
| unspecified | 8 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 70 |
| phase transition | 24 |
| phase equilibrium | 24 |
| formation | 33 |

## 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 |
|---|---|---|---|
| CoTa-02Har.tdb | K.C. Hari Kumar, T. Van Rompaey, P. Wollants, Z. Metallkd., 93, 1146-53(2002). [doi:10.1515/ijmr-2002-0196](https://doi.org/10.1515/ijmr-2002-0196) | `c7251b1bb94512ab00d2bd194c887814d6afefeafabe1a722f6d182d126e0cb3` | [viewer](https://orchid-project.org/phase-diagrams/#CO-TA/CoTa-02Har.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoTa-02Har.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoTa-02Har.json) |
| CoTa-14Shi.tdb | K. Shinagawa, H. Chinen, T. Omori, K. Oikawa, I. Ohnuma, K. Ishida, R. Kainuma, Intermetallics, 49, 87-97(2014). [doi:10.1016/j.intermet.2014.01.015](https://doi.org/10.1016/j.intermet.2014.01.015) | `e4d873cf93726ad06aff5ab76bb4ebede1cc575e6558c11799e931164ecb0a63` | [viewer](https://orchid-project.org/phase-diagrams/#CO-TA/CoTa-14Shi.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoTa-14Shi.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoTa-14Shi.json) |
| CoTa-19Wan.tdb | P. Wang, J. Kossmann, U.R. Kattner, M. Palumbo, T. Hammerschmidt, G.B. Olson, Calphad, 64, 205-12(2019). [doi:10.1016/j.calphad.2018.12.002](https://doi.org/10.1016/j.calphad.2018.12.002) | `0188b050430162f44674316c31f37ec02a3d98082cebe590ce658b2d200c5572` | [viewer](https://orchid-project.org/phase-diagrams/#CO-TA/CoTa-19Wan.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoTa-19Wan.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoTa-19Wan.json) |
| CoTa-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) | `f38abf64bd567e762a5855706cb2c9cc37ba4fcf2a5bfe7e86afcc1177576c7f` | [viewer](https://orchid-project.org/phase-diagrams/#CO-TA/CoTa-19Zho.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoTa-19Zho.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoTa-19Zho.json) |
| CoTa-22Wan.tdb | C. Wang, X. Chen, P. Yang, Q. Zhang, S. Yang, Y. Lu, Y. Guo, X. Liu, J. Alloys Compd., 925, 166723(2022). [doi:10.1016/j.jallcom.2022.166723](https://doi.org/10.1016/j.jallcom.2022.166723) | `cab3db05a3994913cc4934ccc9d4fb961c21df10e4243f5d57c7292e0ffbcd83` | [viewer](https://orchid-project.org/phase-diagrams/#CO-TA/CoTa-22Wan.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoTa-22Wan.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoTa-22Wan.json) |
| CoTa-99Liu-LB.tdb | Z.-K. Liu, Y.A. Chang, Calphad, 23, 339-56(1999). [doi:10.1016/S0364-5916(00)00005-5](https://doi.org/10.1016/S0364-5916%2800%2900005-5) | `2d4f912a1ca1b7373b7dc43c8c9df22d1fdd60ea4de8a4efd2589c46e3bd0565` | [viewer](https://orchid-project.org/phase-diagrams/#CO-TA/CoTa-99Liu-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoTa-99Liu-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoTa-99Liu-LB.json) |

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

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| CoTa-02Har.tdb | 2056.85 | LIQUID (x(Ta) 0.64626) + COTA2_C16 (x(Ta) 0.66667) + BCC_A2 (x(Ta) 0.8606) |
| CoTa-02Har.tdb | 2056.85 | LIQUID (x(Ta) 0.64627) + COTA2_C16 (x(Ta) 0.66667) + BCC_A2 (x(Ta) 0.86061) |
| CoTa-02Har.tdb | 1911.63 | MU_D85 (x(Ta) 0.51912) + LIQUID (x(Ta) 0.55082) + COTA2_C16 (x(Ta) 0.66667) |
| CoTa-02Har.tdb | 1911.63 | MU_D85 (x(Ta) 0.51916) + LIQUID (x(Ta) 0.55106) + COTA2_C16 (x(Ta) 0.66667) |
| CoTa-02Har.tdb | 1843.4 | C15_LAVES (x(Ta) 0.33892) + LIQUID (x(Ta) 0.40693) + MU_D85 (x(Ta) 0.48396) |
| CoTa-02Har.tdb | 1812.91 | C15_LAVES (x(Ta) 0.33858) + CO16TA9_C14 (x(Ta) 0.36) + MU_D85 (x(Ta) 0.48374) |
| CoTa-02Har.tdb | 1720.72 | LIQUID (x(Ta) 0.19165) + CO3TA_C36 (x(Ta) 0.25) + C15_LAVES (x(Ta) 0.29407) |
| CoTa-02Har.tdb | 1552.64 | FCC_A1 (x(Ta) 0.05264) + LIQUID (x(Ta) 0.12393) + CO3TA_C36 (x(Ta) 0.25) |
| CoTa-02Har.tdb | 1552.64 | FCC_A1 (x(Ta) 0.05261) + LIQUID (x(Ta) 0.12383) + CO3TA_C36 (x(Ta) 0.25) |
| CoTa-02Har.tdb | 1402.13 | C15_LAVES (x(Ta) 0.335) + CO16TA9_C14 (x(Ta) 0.36) + MU_D85 (x(Ta) 0.48072) |
| CoTa-02Har.tdb | 1235.45 | FCC_A1 (x(Ta) 0.02327) + CO7TA2 (x(Ta) 0.22222) + CO3TA_C36 (x(Ta) 0.25) |
| CoTa-02Har.tdb | 1235.45 | FCC_A1 (x(Ta) 0.02325) + CO7TA2 (x(Ta) 0.22222) + CO3TA_C36 (x(Ta) 0.25) |
| CoTa-02Har.tdb | 1235.45 | FCC_A1 (x(Ta) 0.02328) + CO7TA2 (x(Ta) 0.22222) + CO3TA_C36 (x(Ta) 0.25) |
| CoTa-02Har.tdb | 682.97 | HCP_A3 (x(Ta) 0) + FCC_A1 (x(Ta) 0.00126) + CO7TA2 (x(Ta) 0.22222) |
| CoTa-02Har.tdb | 682.97 | HCP_A3 (x(Ta) 0) + FCC_A1 (x(Ta) 0.00125) + CO7TA2 (x(Ta) 0.22222) |
| CoTa-02Har.tdb | 682.97 | HCP_A3 (x(Ta) 0) + FCC_A1 (x(Ta) 0.00125) + CO7TA2 (x(Ta) 0.22222) |
| CoTa-14Shi.tdb | 2225.5 | LIQUID (x(Ta) 0.66335) + COTA2_C16 (x(Ta) 0.68661) + BCC_A2 (x(Ta) 0.93278) |
| CoTa-14Shi.tdb | 1957.44 | MU_D85 (x(Ta) 0.53561) + LIQUID (x(Ta) 0.58037) + COTA2_C16 (x(Ta) 0.62275) |
| CoTa-14Shi.tdb | 1860.25 | CO2TA_C15 (x(Ta) 0.34069) + CO2TA_C14 (x(Ta) 0.36023) + LIQUID (x(Ta) 0.40109) |
| CoTa-14Shi.tdb | 1830.23 | CO2TA_C14 (x(Ta) 0.36788) + LIQUID (x(Ta) 0.42009) + MU_D85 (x(Ta) 0.45781) |
| CoTa-14Shi.tdb | 1714.19 | LIQUID (x(Ta) 0.18136) + CO2TA_C36 (x(Ta) 0.2713) + CO2TA_C15 (x(Ta) 0.27532) |
| CoTa-14Shi.tdb | 1583.65 | FCC_A1 (x(Ta) 0.05927) + LIQUID (x(Ta) 0.13228) + CO2TA_C36 (x(Ta) 0.23584) |
| CoTa-14Shi.tdb | 1583.65 | L12_FCC (x(Ta) 0.05927) + LIQUID (x(Ta) 0.13228) + CO2TA_C36 (x(Ta) 0.23584) |
| CoTa-14Shi.tdb | 1566.21 | CO2TA_C15 (x(Ta) 0.34205) + CO2TA_C14 (x(Ta) 0.36589) + MU_D85 (x(Ta) 0.46079) |
| CoTa-14Shi.tdb | 1306.26 | FCC_A1 (x(Ta) 0.01522) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.24136) |
| CoTa-14Shi.tdb | 1306.26 | L12_FCC (x(Ta) 0.01522) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.24136) |
| CoTa-14Shi.tdb | 1220.39 | CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.25793) + CO2TA_C15 (x(Ta) 0.2634) |
| CoTa-14Shi.tdb | 1220.39 | CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.25793) + CO2TA_C15 (x(Ta) 0.2634) |
| CoTa-14Shi.tdb | 887.37 | FCC_A1 (x(Ta) 2.200e-4) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C15 (x(Ta) 0.29579) |
| CoTa-14Shi.tdb | 887.37 | FCC_A1 (x(Ta) 2.200e-4) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C15 (x(Ta) 0.2958) |
| CoTa-14Shi.tdb | 887.37 | L12_FCC (x(Ta) 2.200e-4) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C15 (x(Ta) 0.2958) |
| CoTa-14Shi.tdb | 696.48 | FCC_A1 (x(Ta) 1.000e-5) + HCP_A3 (x(Ta) 1.700e-4) + CO2TA_C15 (x(Ta) 0.31787) |
| CoTa-14Shi.tdb | 696.48 | FCC_A1 (x(Ta) 1.000e-5) + HCP_A3 (x(Ta) 1.700e-4) + CO2TA_C15 (x(Ta) 0.31787) |
| CoTa-14Shi.tdb | 696.48 | L12_FCC (x(Ta) 1.000e-5) + HCP_A3 (x(Ta) 1.700e-4) + CO2TA_C15 (x(Ta) 0.31787) |
| CoTa-14Shi.tdb | 322.61 | MU_D85 (x(Ta) 0.48912) + COTA2_C16 (x(Ta) 0.66667) + BCC_A2 (x(Ta) 0.99997) |
| CoTa-14Shi.tdb | 322.61 | MU_D85 (x(Ta) 0.48912) + COTA2_C16 (x(Ta) 0.66667) + BCC_A2 (x(Ta) 0.99997) |
| CoTa-19Wan.tdb | 2011.03 | LIQUID (x(Ta) 0.63448) + COTA2_C16 (x(Ta) 0.66853) + BCC_A2 (x(Ta) 0.90389) |
| CoTa-19Wan.tdb | 1899.15 | MU_D85 (x(Ta) 0.53752) + LIQUID (x(Ta) 0.56453) + COTA2_C16 (x(Ta) 0.63275) |
| CoTa-19Wan.tdb | 1864.11 | CO2TA_C15 (x(Ta) 0.3451) + CO2TA_C14 (x(Ta) 0.36931) + LIQUID (x(Ta) 0.39304) |
| CoTa-19Wan.tdb | 1857.33 | CO2TA_C14 (x(Ta) 0.37341) + LIQUID (x(Ta) 0.40239) + MU_D85 (x(Ta) 0.44838) |
| CoTa-19Wan.tdb | 1724.31 | LIQUID (x(Ta) 0.18347) + CO2TA_C36 (x(Ta) 0.2551) + CO2TA_C15 (x(Ta) 0.28796) |
| CoTa-19Wan.tdb | 1594.38 | FCC_A1 (x(Ta) 0.05936) + LIQUID (x(Ta) 0.12596) + CO2TA_C36 (x(Ta) 0.23653) |
| CoTa-19Wan.tdb | 1594.38 | FCC_4SL (x(Ta) 0.05936) + LIQUID (x(Ta) 0.12596) + CO2TA_C36 (x(Ta) 0.23653) |
| CoTa-19Wan.tdb | 1538.23 | CO2TA_C15 (x(Ta) 0.33772) + CO2TA_C14 (x(Ta) 0.36046) + MU_D85 (x(Ta) 0.46155) |
| CoTa-19Wan.tdb | 1291.22 | FCC_4SL (x(Ta) 0.0227) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.23418) |
| CoTa-19Wan.tdb | 1291.22 | FCC_A1 (x(Ta) 0.0227) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.23418) |
| CoTa-19Wan.tdb | 1269.5 | CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.24351) + CO2TA_C15 (x(Ta) 0.26658) |
| CoTa-19Wan.tdb | 694.81 | HCP_A3 (x(Ta) 3.000e-5) + FCC_4SL (x(Ta) 4.000e-5) + CO7TA2 (x(Ta) 0.22222) |
| CoTa-19Wan.tdb | 694.81 | HCP_A3 (x(Ta) 3.000e-5) + FCC_A1 (x(Ta) 4.000e-5) + CO7TA2 (x(Ta) 0.22222) |
| CoTa-19Zho.tdb | 2073.02 | LIQUID (x(Ta) 0.65239) + COTA2_C16 (x(Ta) 0.66394) + BCC_A2 (x(Ta) 0.90543) |
| CoTa-19Zho.tdb | 1946.57 | MU_D85 (x(Ta) 0.52924) + LIQUID (x(Ta) 0.55217) + COTA2_C16 (x(Ta) 0.6319) |
| CoTa-19Zho.tdb | 1832.76 | CO2TA_C15 (x(Ta) 0.3306) + CO2TA_C14 (x(Ta) 0.36083) + LIQUID (x(Ta) 0.37598) |
| CoTa-19Zho.tdb | 1808.29 | CO2TA_C14 (x(Ta) 0.37265) + LIQUID (x(Ta) 0.40206) + MU_D85 (x(Ta) 0.46511) |
| CoTa-19Zho.tdb | 1720.59 | LIQUID (x(Ta) 0.18171) + CO2TA_C36 (x(Ta) 0.25715) + CO2TA_C15 (x(Ta) 0.267) |
| CoTa-19Zho.tdb | 1583.99 | FCC_A1 (x(Ta) 0.05061) + LIQUID (x(Ta) 0.13458) + CO2TA_C36 (x(Ta) 0.24281) |
| CoTa-19Zho.tdb | 1583.99 | FCC_4SL (x(Ta) 0.05061) + LIQUID (x(Ta) 0.13458) + CO2TA_C36 (x(Ta) 0.24281) |
| CoTa-19Zho.tdb | 1567.66 | CO2TA_C15 (x(Ta) 0.33695) + CO2TA_C14 (x(Ta) 0.3629) + MU_D85 (x(Ta) 0.46642) |
| CoTa-19Zho.tdb | 1320.39 | FCC_A1 (x(Ta) 0.03176) + CO3TA (x(Ta) 0.2363) + CO2TA_C36 (x(Ta) 0.24658) |
| CoTa-19Zho.tdb | 1320.39 | FCC_4SL (x(Ta) 0.03176) + CO3TA (x(Ta) 0.2363) + CO2TA_C36 (x(Ta) 0.24658) |
| CoTa-19Zho.tdb | 1303.59 | CO3TA (x(Ta) 0.24196) + CO2TA_C36 (x(Ta) 0.25433) + CO2TA_C15 (x(Ta) 0.26516) |
| CoTa-19Zho.tdb | 694.99 | HCP_A3 (x(Ta) 0) + FCC_4SL (x(Ta) 0) + FCC_A1 (x(Ta) 0) |
| CoTa-19Zho.tdb | 691.7 | HCP_A3 (x(Ta) 4.000e-5) + FCC_4SL (x(Ta) 3.900e-4) + CO3TA (x(Ta) 0.24984) |
| CoTa-19Zho.tdb | 691.7 | HCP_A3 (x(Ta) 4.000e-5) + FCC_A1 (x(Ta) 3.900e-4) + CO3TA (x(Ta) 0.24984) |
| CoTa-22Wan.tdb | 2076.13 | LIQUID (x(Ta) 0.66129) + COTA2_C16 (x(Ta) 0.666) + BCC_A2 (x(Ta) 0.94211) |
| CoTa-22Wan.tdb | 1895.69 | MU_D85 (x(Ta) 0.53964) + LIQUID (x(Ta) 0.58797) + COTA2_C16 (x(Ta) 0.62586) |
| CoTa-22Wan.tdb | 1853.78 | CO2TA_C15 (x(Ta) 0.33693) + CO2TA_C14 (x(Ta) 0.35991) + LIQUID (x(Ta) 0.39264) |
| CoTa-22Wan.tdb | 1827.67 | CO2TA_C14 (x(Ta) 0.37039) + LIQUID (x(Ta) 0.41304) + MU_D85 (x(Ta) 0.46265) |
| CoTa-22Wan.tdb | 1720.45 | LIQUID (x(Ta) 0.18603) + CO2TA_C36 (x(Ta) 0.26957) + CO2TA_C15 (x(Ta) 0.27208) |
| CoTa-22Wan.tdb | 1592.32 | FCC_A1 (x(Ta) 0.05907) + LIQUID (x(Ta) 0.13241) + CO2TA_C36 (x(Ta) 0.2266) |
| CoTa-22Wan.tdb | 1566.23 | CO2TA_C15 (x(Ta) 0.33793) + CO2TA_C14 (x(Ta) 0.36307) + MU_D85 (x(Ta) 0.46428) |
| CoTa-22Wan.tdb | 1316.43 | FCC_A1 (x(Ta) 0.01649) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.22904) |
| CoTa-22Wan.tdb | 1316.43 | FCC_A1 (x(Ta) 0.01656) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.22903) |
| CoTa-22Wan.tdb | 1222.1 | CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.25114) + CO2TA_C15 (x(Ta) 0.25891) |
| CoTa-22Wan.tdb | 1222.1 | CO7TA2 (x(Ta) 0.22222) + CO2TA_C36 (x(Ta) 0.25115) + CO2TA_C15 (x(Ta) 0.25891) |
| CoTa-22Wan.tdb | 903.8 | FCC_A1 (x(Ta) 2.600e-4) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C15 (x(Ta) 0.28904) |
| CoTa-22Wan.tdb | 903.8 | FCC_A1 (x(Ta) 2.600e-4) + CO7TA2 (x(Ta) 0.22222) + CO2TA_C15 (x(Ta) 0.28908) |
| CoTa-22Wan.tdb | 696.46 | FCC_A1 (x(Ta) 1.000e-5) + HCP_A3 (x(Ta) 1.700e-4) + CO2TA_C15 (x(Ta) 0.31609) |
| CoTa-22Wan.tdb | 696.46 | FCC_A1 (x(Ta) 1.000e-5) + HCP_A3 (x(Ta) 1.700e-4) + CO2TA_C15 (x(Ta) 0.31609) |
| CoTa-22Wan.tdb | 604.61 | MU_D85 (x(Ta) 0.49508) + COTA2_C16 (x(Ta) 0.66673) + BCC_A2 (x(Ta) 0.9986) |
| CoTa-99Liu-LB.tdb | 2072.99 | LIQUID (x(Ta) 0.65044) + COTA2_C16 (x(Ta) 0.66667) + BCC_A2 (x(Ta) 0.86165) |
| CoTa-99Liu-LB.tdb | 2072.99 | LIQUID (x(Ta) 0.65047) + COTA2_C16 (x(Ta) 0.66667) + BCC_A2 (x(Ta) 0.86166) |
| CoTa-99Liu-LB.tdb | 1944.92 | MU_D85 (x(Ta) 0.55674) + LIQUID (x(Ta) 0.57452) + COTA2_C16 (x(Ta) 0.66667) |
| CoTa-99Liu-LB.tdb | 1944.92 | MU_D85 (x(Ta) 0.55701) + LIQUID (x(Ta) 0.57481) + COTA2_C16 (x(Ta) 0.66667) |
| CoTa-99Liu-LB.tdb | 1845.24 | C15_LAVES (x(Ta) 0.33731) + LIQUID (x(Ta) 0.38266) + MU_D85 (x(Ta) 0.46497) |
| CoTa-99Liu-LB.tdb | 1810.83 | C15_LAVES (x(Ta) 0.33657) + C14_LAVES (x(Ta) 0.36323) + MU_D85 (x(Ta) 0.46465) |
| CoTa-99Liu-LB.tdb | 1727.19 | LIQUID (x(Ta) 0.21012) + C36_LAVES (x(Ta) 0.26966) + C15_LAVES (x(Ta) 0.28736) |
| CoTa-99Liu-LB.tdb | 1553.76 | FCC_A1 (x(Ta) 0.05048) + LIQUID (x(Ta) 0.13704) + C36_LAVES (x(Ta) 0.24928) |
| CoTa-99Liu-LB.tdb | 1403.36 | C15_LAVES (x(Ta) 0.33255) + C14_LAVES (x(Ta) 0.36191) + MU_D85 (x(Ta) 0.46221) |
| CoTa-99Liu-LB.tdb | 1229.44 | FCC_A1 (x(Ta) 0.02907) + CO7TA2 (x(Ta) 0.22222) + C36_LAVES (x(Ta) 0.24578) |
| CoTa-99Liu-LB.tdb | 1229.44 | FCC_A1 (x(Ta) 0.02907) + CO7TA2 (x(Ta) 0.22222) + C36_LAVES (x(Ta) 0.24578) |
| CoTa-99Liu-LB.tdb | 695.74 | FCC_A1 (x(Ta) 0.01214) + HCP_A3 (x(Ta) 0.01216) + CO7TA2 (x(Ta) 0.22222) |
| CoTa-99Liu-LB.tdb | 695.74 | FCC_A1 (x(Ta) 0.01208) + HCP_A3 (x(Ta) 0.0121) + CO7TA2 (x(Ta) 0.22222) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/CO/CO-TA.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/CO/CO-TA.json) · [CALPHAD hull CoTa-02Har](https://data.orchid-project.org/hulls/calphad-sgte/CO/CO-TA--CoTa-02Har.json) · [CALPHAD hull CoTa-14Shi](https://data.orchid-project.org/hulls/calphad-sgte/CO/CO-TA--CoTa-14Shi.json) · [CALPHAD hull CoTa-19Zho](https://data.orchid-project.org/hulls/calphad-sgte/CO/CO-TA--CoTa-19Zho.json) · [CALPHAD hull CoTa-99Liu-LB](https://data.orchid-project.org/hulls/calphad-sgte/CO/CO-TA--CoTa-99Liu-LB.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Co–Ta system (70)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 2226.15 | peritectic: L + bcc ↔ CoTa2 | L: Ta 0.663; bcc: Ta 0.933; CoTa2: Ta 0.687 | experimental | [1] Wang 2022; _cites Shinagawa 2014_ [doi](https://doi.org/10.1016/j.intermet.2014.01.015) | Table 2, p. 9, row 4; `ORC-W6KLB3JZBY` |  |
| 2086.15 | eutectic: Liquid ↔ λ1-Co2Ta + μ-Co6Ta7 |  | model | [1] Wang 2022 | p. 15; `ORC-S2FVBXZZEV` | “In the Al-Co-Ta ternary system, the eutectic reaction of Liquid ↔ λ1-Co2Ta + μ-Co6Ta7 occurs at 1813 °C, which is higher than the reaction temperature in the Co-Ta binary system.” |
| 2073.15 | peritectic: L + bcc ↔ CoTa2 | L: Ta 0.656; bcc: Ta 0.943; CoTa2: Ta 0.664 | model | [1] Wang 2022 | Table 2, p. 9, row 5; `ORC-3CVCT4P2YB` |  |
| 2073.15 | peritectic: L + bcc ↔ CoTa2 | L: Ta 0.652; bcc: Ta 0.905; CoTa2: Ta 0.664 | model | [1] Wang 2022; _cites Zhou 2019_ [doi](https://doi.org/10.1016/j.calphad.2019.101649) | Table 2, p. 9, row 3; `ORC-5C27AQBVMH` |  |
| 2073.15 | peritectic: L + bcc ↔ CoTa2 | CoTa2: Ta 0.666667 | experimental | [1] Wang 2022; _cites Bernard 1976_ | Table 2, p. 9, row 1; `ORC-ENXVWUWFBV` |  |
| 2073 | liquid+bcc=CoTa2 | CoTa2: Ta 0.666667 | experimental | [2] Liu 1999; _cites ref. 12_ | Table 4, p. 8, row 1; `ORC-6V4ISU2ZJA` |  |
| 2073 | liquid+bcc=CoTa2 | liquid: Ta 0.65; bcc: Ta 0.862; CoTa2: Ta 0.667 | model | [2] Liu 1999 | Table 4, p. 8, row 2; `ORC-MNFSM3C3A2` |  |
| 2060.15 | peritectic: L + bcc ↔ CoTa2 | L: Ta 0.643; bcc: Ta 0.912; CoTa2: Ta 0.661 | unspecified | [1] Wang 2022; _cites Wang 2019_ | Table 2, p. 9, row 2; `ORC-X3LU2CITGS` |  |
| 1958.15 | eutectic: L ↔ μ + CoTa2 | L: Ta 0.58; μ: Ta 0.534; CoTa2: Ta 0.623 | experimental | [1] Wang 2022; _cites Shinagawa 2014_ [doi](https://doi.org/10.1016/j.intermet.2014.01.015) | Table 2, p. 9, row 9; `ORC-EZBYHHLOOU` |  |
| 1945 | liquid=μ+ CoTa2 | liquid: Ta 0.574; μ: Ta 0.556; CoTa2: Ta 0.667 | model | [2] Liu 1999 | Table 4, p. 8, row 7; `ORC-TZXTUCRMLV` |  |
| 1943.15 | eutectic: L ↔ μ + CoTa2 | CoTa2: Ta 0.666667 | experimental | [1] Wang 2022; _cites Bernard 1976_ | Table 2, p. 9, row 6; `ORC-IYHKQW7FV4` |  |
| 1943.15 | eutectic: L ↔ μ + CoTa2 | L: Ta 0.551; μ: Ta 0.528; CoTa2: Ta 0.631 | model | [1] Wang 2022; _cites Zhou 2019_ [doi](https://doi.org/10.1016/j.calphad.2019.101649) | Table 2, p. 9, row 8; `ORC-YEFNOU42W5` |  |
| 1943 | liquid=μ+ CoTa2 | CoTa2: Ta 0.666667 | experimental | [2] Liu 1999; _cites ref. 12_ | Table 4, p. 8, row 6; `ORC-7BQUOLS33K` |  |
| 1896.15 | eutectic: L ↔ μ + CoTa2 | L: Ta 0.588; μ: Ta 0.54; CoTa2: Ta 0.626 | model | [1] Wang 2022 | Table 2, p. 9, row 10; `ORC-MKMD3ZVLSC` |  |
| 1893.15 | eutectic: L ↔ μ + CoTa2 | L: Ta 0.572; μ: Ta 0.541; CoTa2: Ta 0.65 | unspecified | [1] Wang 2022; _cites Wang 2019_ | Table 2, p. 9, row 7; `ORC-6PA2OZX3JS` |  |
| 1863.15 | peritectic: L + λ2 ↔ λ1 | L: Ta 0.393; λ2: Ta 0.345; λ1: Ta 0.369 | unspecified | [1] Wang 2022; _cites Wang 2019_ | Table 2, p. 9, row 13; `ORC-VFI7YFCLUA` |  |
| 1860.15 | peritectic: L + λ2 ↔ λ1 | L: Ta 0.401; λ2: Ta 0.341; λ1: Ta 0.36 | experimental | [1] Wang 2022; _cites Shinagawa 2014_ [doi](https://doi.org/10.1016/j.intermet.2014.01.015) | Table 2, p. 9, row 15; `ORC-APD2227C66` |  |
| 1854.15 | peritectic: L + λ2 ↔ λ1 | L: Ta 0.393; λ2: Ta 0.337; λ1: Ta 0.36 | model | [1] Wang 2022 | Table 2, p. 9, row 16; `ORC-QPTWZ3SQAV` |  |
| 1845 | liquid=C15+μ | liquid: Ta 0.382; C15: Ta 0.333; μ: Ta 0.465 | model | [2] Liu 1999 | Table 4, p. 8, row 11; `ORC-KXOLNZYE5J` |  |
| 1843.15 | peritectic: L + λ2 ↔ λ1 | L: Ta 0.333; λ2: Ta 0.333; λ1: Ta 0.333333 | experimental | [1] Wang 2022; _cites Petkov 1972_ | Table 2, p. 9, row 11; `ORC-TEG5CESG2T` |  |
| 1843.15 | peritectic: L + λ2 ↔ λ1 | λ2: Ta 0.333333; λ1: Ta 0.333333 | experimental | [1] Wang 2022; _cites Bernard 1976_ | Table 2, p. 9, row 12; `ORC-ZI3MCCQH2B` |  |
| 1843 | liquid=C15+μ |  | experimental | [2] Liu 1999; _cites ref. 12_ | Table 4, p. 8, row 12; `ORC-TQ2FV5VNPQ` |  |
| 1833.15 | peritectic: L + λ2 ↔ λ1 | L: Ta 0.375; λ2: Ta 0.329; λ1: Ta 0.362 | model | [1] Wang 2022; _cites Zhou 2019_ [doi](https://doi.org/10.1016/j.calphad.2019.101649) | Table 2, p. 9, row 14; `ORC-562GNRFX4U` |  |
| 1833 | liquid=C15+μ |  | experimental | [2] Liu 1999; _cites ref. 19_ | Table 4, p. 8, row 10; `ORC-YAFLSGZKOB` |  |
| 1830.15 | eutectic: L ↔ λ1 + μ | L: Ta 0.42; λ1: Ta 0.368; μ: Ta 0.458 | experimental | [1] Wang 2022; _cites Shinagawa 2014_ [doi](https://doi.org/10.1016/j.intermet.2014.01.015) | Table 2, p. 9, row 19; `ORC-IODIA2W47I` |  |
| 1828.15 | eutectic: L ↔ λ1 + μ | L: Ta 0.413; λ1: Ta 0.37; μ: Ta 0.463 | model | [1] Wang 2022 | Table 2, p. 9, row 20; `ORC-X6742ZA2YG` |  |
| 1823.15 | eutectic: L ↔ λ1 + μ | λ1: Ta 0.333333 | experimental | [1] Wang 2022; _cites Petkov 1972_ | Table 2, p. 9, row 17; `ORC-C4IM367LIM` |  |
| 1813 | C15+μ=C14 |  | experimental | [2] Liu 1999; _cites ref. 19_ | Table 4, p. 8, row 13; `ORC-2N5UA7YFAL` |  |
| 1812 | C15+μ=C14 | C15: Ta 0.333; μ: Ta 0.465; C14: Ta 0.371 | model | [2] Liu 1999 | Table 4, p. 8, row 14; `ORC-ZQFST5QEDZ` |  |
| 1808.15 | eutectic: L ↔ λ1 + μ | L: Ta 0.402; λ1: Ta 0.373; μ: Ta 0.465 | model | [1] Wang 2022; _cites Zhou 2019_ [doi](https://doi.org/10.1016/j.calphad.2019.101649) | Table 2, p. 9, row 18; `ORC-NUMU4ASQVS` |  |
| 1729.15 | peritectic: L + λ2 ↔ λ3 | L: Ta 0.187; λ2: Ta 0.279; λ3: Ta 0.275 | experimental | [1] Wang 2022; _cites Shinagawa 2014_ [doi](https://doi.org/10.1016/j.intermet.2014.01.015) | Table 2, p. 9, row 25; `ORC-EPGKEJDEHD` |  |
| 1723.15 | peritectic: L + λ2 ↔ λ3 | λ2: Ta 0.333333; λ3: Ta 0.333333 | experimental | [1] Wang 2022; _cites Petkov 1972_ | Table 2, p. 9, row 21; `ORC-FPZEIWOW3M` |  |
| 1723 | liquid+C15=C36 |  | experimental | [2] Liu 1999; _cites ref. 19_ | Table 4, p. 8, row 15; `ORC-K5Y7CITLYC` |  |
| 1721.15 | peritectic: L + λ2 ↔ λ3 | L: Ta 0.182; λ2: Ta 0.267; λ3: Ta 0.257 | model | [1] Wang 2022; _cites Zhou 2019_ [doi](https://doi.org/10.1016/j.calphad.2019.101649) | Table 2, p. 9, row 24; `ORC-3KYGJBJNNE` |  |
| 1721.15 | peritectic: L + λ2 ↔ λ3 | L: Ta 0.205; λ2: Ta 0.287; λ3: Ta 0.271 | model | [1] Wang 2022; _cites Liu 1999_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900005-5) | Table 2, p. 9, row 22; `ORC-7MT2IXFEVQ` |  |
| 1721.15 | peritectic: L + λ2 ↔ λ3 | L: Ta 0.182; λ2: Ta 0.287; λ3: Ta 0.254 | unspecified | [1] Wang 2022; _cites Wang 2019_ | Table 2, p. 9, row 23; `ORC-PAM342K4YD` |  |
| 1721 | liquid+C15=C36 | liquid: Ta 0.205; C15: Ta 0.271; C36: Ta 0.287 | model | [2] Liu 1999 | Table 4, p. 8, row 16; `ORC-PWLO7Y6D2J` |  |
| 1720.15 | peritectic: L + λ2 ↔ λ3 | L: Ta 0.186; λ2: Ta 0.272; λ3: Ta 0.269 | model | [1] Wang 2022 | Table 2, p. 9, row 26; `ORC-66NRWNXAID` |  |
| 1594.15 | eutectic: L ↔ fcc + λ3 | L: Ta 0.126; fcc: Ta 0.059; λ3: Ta 0.237 | unspecified | [1] Wang 2022; _cites Wang 2019_ | Table 2, p. 9, row 29; `ORC-PBQGZFICDY` |  |
| 1593.15 | eutectic: L ↔ fcc + λ3 | L: Ta 0.132; fcc: Ta 0.059; λ3: Ta 0.227 | model | [1] Wang 2022 | Table 2, p. 9, row 32; `ORC-BXIIXCHCZU` |  |
| 1588.15 | eutectic: L ↔ fcc + λ3 | L: Ta 0.134; fcc: Ta 0.061; λ3: Ta 0.237 | experimental | [1] Wang 2022; _cites Shinagawa 2014_ [doi](https://doi.org/10.1016/j.intermet.2014.01.015) | Table 2, p. 9, row 31; `ORC-QFM47KWUDN` |  |
| 1584.15 | eutectic: L ↔ fcc + λ3 | L: Ta 0.134; fcc: Ta 0.051; λ3: Ta 0.242 | model | [1] Wang 2022; _cites Zhou 2019_ [doi](https://doi.org/10.1016/j.calphad.2019.101649) | Table 2, p. 9, row 30; `ORC-BTPIT6HTLC` |  |
| 1570.15 | eutectoid: λ1 ↔ μ + λ2 | λ1: Ta 0.351; μ: Ta 0.468; λ2: Ta 0.332 | unspecified | [1] Wang 2022; _cites Wang 2019_ | Table 2, p. 9, row 34; `ORC-GAIRGM5DZE` |  |
| 1567.15 | eutectoid: λ1 ↔ μ + λ2 | λ1: Ta 0.362; μ: Ta 0.466; λ2: Ta 0.337 | model | [1] Wang 2022; _cites Zhou 2019_ [doi](https://doi.org/10.1016/j.calphad.2019.101649) | Table 2, p. 9, row 35; `ORC-ELZUMRLJMZ` |  |
| 1567.15 | eutectoid: λ1 ↔ μ + λ2 | λ1: Ta 0.363; μ: Ta 0.464; λ2: Ta 0.338 | model | [1] Wang 2022 | Table 2, p. 9, row 37; `ORC-M33ITBGTHY` |  |
| 1566.15 | eutectoid: λ1 ↔ μ + λ2 | λ1: Ta 0.366; μ: Ta 0.461; λ2: Ta 0.342 | experimental | [1] Wang 2022; _cites Shinagawa 2014_ [doi](https://doi.org/10.1016/j.intermet.2014.01.015) | Table 2, p. 9, row 36; `ORC-YLRNW3U4OQ` |  |
| 1563.15 | eutectic: L ↔ fcc + λ3 | λ3: Ta 0.333333 | experimental | [1] Wang 2022; _cites Petkov 1972_ | Table 2, p. 9, row 27; `ORC-4Q52XHGFK6` |  |
| 1553.15 | eutectic: L ↔ fcc + λ3 | L: Ta 0.137; fcc: Ta 0.051; λ3: Ta 0.252 | model | [1] Wang 2022; _cites Liu 1999_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900005-5) | Table 2, p. 9, row 28; `ORC-7W2UWO55V4` |  |
| 1553 | liquid=fcc+C36 |  | experimental | [2] Liu 1999; _cites ref. 19_ | Table 4, p. 8, row 19; `ORC-RW6QW5SWG3` |  |
| 1553 | liquid=fcc+C36 | liquid: Ta 0.137; fcc: Ta 0.051; C36: Ta 0.252 | model | [2] Liu 1999 | Table 4, p. 8, row 18; `ORC-YH3WRW77SV` |  |
| 1551 | liquid=fcc+C36 | liquid: Ta 0.138 | experimental | [2] Liu 1999; _cites ref. 16_ | Table 4, p. 8, row 17; `ORC-NGOFNNK6VE` |  |
| 1405 | C14=C15+μ | C14: Ta 0.367; C15: Ta 0.332; μ: Ta 0.462 | model | [2] Liu 1999 | Table 4, p. 8, row 21; `ORC-DZWE2PD76O` |  |
| 1403.15 | eutectoid: λ1 ↔ μ + λ2 | λ1: Ta 0.333333; λ2: Ta 0.333333 | experimental | [1] Wang 2022; _cites Petkov 1972_ | Table 2, p. 9, row 33; `ORC-DPPGRG5SH5` |  |
| 1403 | C14=C15+μ |  | experimental | [2] Liu 1999; _cites ref. 19_ | Table 4, p. 8, row 20; `ORC-GT3IUARTCY` |  |
| 1336.15 | peritectoid: fcc + λ3 ↔ Co7Ta2 | fcc: Ta 0.025; λ3: Ta 0.241; Co7Ta2: Ta 0.222 | experimental | [1] Wang 2022; _cites Shinagawa 2014_ [doi](https://doi.org/10.1016/j.intermet.2014.01.015) | Table 2, p. 9, row 40; `ORC-TRF2OLMQQ3` |  |
| 1320.15 | peritectoid: fcc + λ3 ↔ Co7Ta2 | fcc: Ta 0.032; λ3: Ta 0.246; Co7Ta2: Ta 0.236 | model | [1] Wang 2022; _cites Zhou 2019_ [doi](https://doi.org/10.1016/j.calphad.2019.101649) | Table 2, p. 9, row 39; `ORC-SAUBVKV7WE` |  |
| 1313.15 | peritectoid: fcc + λ3 ↔ Co7Ta2 | fcc: Ta 0.016; λ3: Ta 0.23; Co7Ta2: Ta 0.222 | model | [1] Wang 2022 | Table 2, p. 9, row 41; `ORC-24IRKKZNK7` |  |
| 1306.15 | peritectoid |  | experimental | [3] Shinagawa 2014 | p. 1; `ORC-JCFAL2IPMA.7c9da4` | “The solvus temperature of the g0 Co3Ta (L12) phase precipitated in the 5.8 at.%Ta g(Co) and the peritectoid temperature of the Co7Ta2 phase in an 8.5 at.%Ta alloy were determined to be 1013 C and 1033 C, respectively, by differential scanning calorimeter (DSC).” |
| 1303.15 | eutectoid: λ3 ↔ Co7Ta2 + λ2 | λ3: Ta 0.254; Co7Ta2: Ta 0.242; λ2: Ta 0.265 | model | [1] Wang 2022; _cites Zhou 2019_ [doi](https://doi.org/10.1016/j.calphad.2019.101649) | Table 2, p. 9, row 43; `ORC-PELP57M644` |  |
| 1291.15 | peritectoid: fcc + λ3 ↔ Co7Ta2 | fcc: Ta 0.0227; λ3: Ta 0.234; Co7Ta2: Ta 0.222 | unspecified | [1] Wang 2022; _cites Wang 2019_ | Table 2, p. 9, row 38; `ORC-AFZPTRQ4Z5` |  |
| 1281 | fcc+C36= Co7Ta2 | Co7Ta2: Ta 0.222222 | experimental | [2] Liu 1999; _cites ref. 16_ | Table 4, p. 8, row 24; `ORC-OWD7U73JTN` |  |
| 1272.15 | eutectoid: λ3 ↔ Co7Ta2 + λ2 | λ3: Ta 0.243; Co7Ta2: Ta 0.222; λ2: Ta 0.266 | unspecified | [1] Wang 2022; _cites Wang 2019_ | Table 2, p. 9, row 42; `ORC-TKP6MAKU5J` |  |
| 1263 | fcc+C36= Co7Ta2 | fcc: Ta 0.013; Co7Ta2: Ta 0.222222 | experimental | [2] Liu 1999; _cites ref. 10_ | Table 4, p. 8, row 22; `ORC-MZMRX26NG2` |  |
| 1231.15 | eutectoid: λ3 ↔ Co7Ta2 + λ2 | λ3: Ta 0.259; Co7Ta2: Ta 0.222; λ2: Ta 0.265 | experimental | [1] Wang 2022; _cites Shinagawa 2014_ [doi](https://doi.org/10.1016/j.intermet.2014.01.015) | Table 2, p. 9, row 44; `ORC-QUPMC3ZF6H` |  |
| 1223 | fcc+C36= Co7Ta2 | Co7Ta2: Ta 0.222222 | experimental | [2] Liu 1999; _cites ref. 19_ | Table 4, p. 8, row 25; `ORC-LJ4CAWRMNB` |  |
| 1222 | fcc+C36= Co7Ta2 | fcc: Ta 0.029; C36: Ta 0.249; Co7Ta2: Ta 0.222 | model | [2] Liu 1999 | Table 4, p. 8, row 23; `ORC-3HUBQ2YO2E` |  |
| 1220.15 | eutectoid: λ3 ↔ Co7Ta2 + λ2 | λ3: Ta 0.251; Co7Ta2: Ta 0.222; λ2: Ta 0.259 | model | [1] Wang 2022 | Table 2, p. 9, row 45; `ORC-KBOQIJWYUI` |  |
| 904.15 | eutectoid: Co7Ta2 ↔ λ2 + fcc | Co7Ta2: Ta 0.222; λ2: Ta 0.289; fcc: Ta 3.000e-4 | model | [1] Wang 2022 | Table 2, p. 9, row 47; `ORC-IMNJJKT2L2` |  |
| 889.15 | eutectoid: Co7Ta2 ↔ λ2 + fcc | Co7Ta2: Ta 0.222; λ2: Ta 0.296; fcc: Ta 9.000e-4 | experimental | [1] Wang 2022; _cites Shinagawa 2014_ [doi](https://doi.org/10.1016/j.intermet.2014.01.015) | Table 2, p. 9, row 46; `ORC-DUCTRJ7LQ6` |  |
| 696 | fcc=hcp+Co7Ta2 | fcc: Ta 0.01208; hcp: Ta 0.01209; Co7Ta2: Ta 0.222 | model | [2] Liu 1999 | Table 4, p. 8, row 26; `ORC-ATP4RQGB4P` |  |

## 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, Co–Ta system (33)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| A15 |  | -8.6283 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 3; `ORC-RKKUUGI32G` |  |
| A15 |  | -4.9718 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 2; `ORC-FSZ7HOY4XU` |  |
| A15 |  | 9.2351 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 1; `ORC-TPGOXBQQD2` |  |
| BCC |  | -9.0231 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 4; `ORC-TE4NARQZZL` |  |
| BCC |  | 1.3464 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 2; `ORC-TICL4PYLNM` |  |
| BCC |  | 1.4485 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 5; `ORC-JZJSHRBMIG` |  |
| BCC |  | 7.4552 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 3; `ORC-25DVCEVMMR` |  |
| BCC |  | 9.5225 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 1; `ORC-XQQR2XOMLK` |  |
| C14 |  | -20.866 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 11; `ORC-A4Y3MDWWUM` |  |
| C14 |  | -20.5623 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 9; `ORC-JJVPSXBFMY` |  |
| C14 |  | 1.2747 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 10; `ORC-3YJROTO32O` |  |
| C14 |  | 14.697 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 7; `ORC-KJBRBHVTTF` |  |
| C14 |  | 16.3511 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 5; `ORC-LUFRXDT42O` |  |
| C14 |  | 44.7442 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 6; `ORC-MEPKWQIAS4` |  |
| C14 |  | 77.3168 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 8; `ORC-HLU7D5OEHA` |  |
| C15 |  | -20.9424 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 14; `ORC-CK55Z7SBTZ` |  |
| C15 |  | 19.2335 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 13; `ORC-7NIXZRIUA3` |  |
| C15 |  | 72.2759 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 15; `ORC-ZSKTSNCHL4` |  |
| C16 |  | -24.1586 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 18; `ORC-KCIYWQOPPK` |  |
| C16 |  | 24.3042 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 19; `ORC-7ZUIAHGXHJ` |  |
| C16 |  | 49.0982 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 17; `ORC-ZFUACFO553` |  |
| C36 |  | 17.483 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 21; `ORC-W5F447JLDB` |  |
| C36 |  | 43.6063 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 24; `ORC-EKAZ45B5TC` |  |
| C36 |  | 44.9621 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 23; `ORC-ECTC2GGURO` |  |
| C36 |  | 49.265 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 2, p. 22, row 22; `ORC-RHFUTFSWSJ` |  |
| FCC |  | -21.9842 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 7; `ORC-UAPKUNXIUW` |  |
| FCC |  | -11.5118 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 8; `ORC-VIZQQQWQAX` |  |
| FCC |  | 1.7185 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 6; `ORC-O4QWWCX7I7` |  |
| FCC |  | 15.4676 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 9; `ORC-5YILLQEMH2` |  |
| HCP |  | -21.5815 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 12; `ORC-3665OLE2F4` |  |
| HCP |  | 0 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 11; `ORC-4D3UFD7FHA` |  |
| HCP |  | 17.1227 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 13; `ORC-UOJ7WK5WVK` |  |
| HCP |  | 18.2796 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Wang 2019 | Table 3, p. 27, row 14; `ORC-QMODXLKQT5` |  |

## Other properties

### Phase transition (24)

Table: Phase transition, Co–Ta system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 1217.85 K | 1217.85 | γ + γ' Co3Ta ⇒ γ; _alloy: Co 0.965, Ta 0.035_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 6; `ORC-V4KWLKNWAO` |  |
| Phase transition | 1250.95 K | 1250.95 | magnetic: Co–3.5Ta; _alloy: Co 0.965, Ta 0.035_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 7; `ORC-PDAB64HQIH` |  |
| Phase transition | 1251.15 K | 1251.15 | magnetic | experimental | [3] Shinagawa 2014 | p. 8; `ORC-PAQ3XUMG6C` | “In addition, a small endothermic knickpoint appeared at 978 C in 3.5at.%Ta alloy, which caused by the g magnetic transition (Curie temperature, TC ).” |
| Phase transition | 1286.15 K | 1286.15 | other | experimental | [3] Shinagawa 2014 | p. 1; `ORC-JCFAL2IPMA.1b8b91` | “The solvus temperature of the g0 Co3Ta (L12) phase precipitated in the 5.8 at.%Ta g(Co) and the peritectoid temperature of the Co7Ta2 phase in an 8.5 at.%Ta alloy were determined to be 1013 C and 1033 C, respectively, by differential scanning calorimeter (DSC).” |
| Phase transition | 1286.15 K | 1286.15 | γ + γ' Co3Ta ⇒ γ; _alloy: Co 0.915, Ta 0.085_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 11; `ORC-U6WOCAJJ4I` |  |
| Phase transition | 1306.15 K | 1306.15 | γ + λ3 ⇒ χ Co7Ta2; _alloy: Co 0.915, Ta 0.085_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 10; `ORC-G5U4DKVCB2` |  |
| Phase transition | 1310.85 K | 1310.85 | magnetic: Co–2Ta; _alloy: Ta 0_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 3; `ORC-QIDGQRFRDX` |  |
| Phase transition | 1578.15 K | 1578.15 | eutectic: L ⇒ γ(Co) + λ3; _alloy: Co 0.88, Ta 0.12_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 13; `ORC-FSXMC3HGRV` |  |
| Phase transition | 1578.75 K | 1578.75 | eutectic: Co–8.5Ta; _alloy: Co 0.942, Ta 0.058_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 9; `ORC-C4GY7PWCFU` |  |
| Phase transition | 1582.15 K | 1582.15 | eutectic: L ⇒ γ(Co) + λ3; _alloy: Co 0.76, Ta 0.24_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 19; `ORC-VILI4772RZ` |  |
| Phase transition | 1584.05 K | 1584.05 | eutectic: L ⇒ γ(Co) + λ3; _alloy: Co 0.79, Ta 0.21_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 17; `ORC-AVUYQOVUIF` |  |
| Phase transition | 1584.95 K | 1584.95 | eutectic: L ⇒ γ(Co) + λ3; _alloy: Co 0.86, Ta 0.14_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 14; `ORC-TZWYJUXHD3` |  |
| Phase transition | 1587.15 K | 1587.15 | eutectic: L ⇒ γ(Co) + λ3; _alloy: Co 0.84, Ta 0.16_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 15; `ORC-IT6IF5R3T5` |  |
| Phase transition | 1587.15 K | 1587.15 | eutectic: L ⇒ γ(Co) + λ3; _alloy: Co 0.82, Ta 0.18_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 16; `ORC-RLMJTE4Q34` |  |
| Phase transition | 1701.65 K | 1701.65 | other: Co–3.5Ta; _alloy: Co 0.965, Ta 0.035_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 5; `ORC-I37V2OHRRL` |  |
| Phase transition | 1720.35 K | 1720.35 | peritectic: L + λ2(C15) ⇒ λ3(C36); _alloy: Co 0.76, Ta 0.24_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 20; `ORC-CH2ZPIGP62` |  |
| Phase transition | 1722.05 K | 1722.05 | peritectic: L + λ2(C15) ⇒ λ3(C36); _alloy: Co 0.79, Ta 0.21_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 18; `ORC-M7VUTG2KJK` |  |
| Phase transition | 1735.65 K | 1735.65 | other: Co–2Ta; _alloy: Ta 0_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 2; `ORC-43GY2R5CB7` |  |
| Phase transition | 1888 K | 1888 | liquid=C15; _liquid: Ta 0.328; C15: Ta 0.328_ | model | [2] Liu 1999 | Table 4, p. 8, row 9; `ORC-DQRIDPLMFE` |  |
| Phase transition | 1893 K | 1893 | liquid=C15; _liquid: Ta 0.33; C15: Ta 0.33_ | experimental | [2] Liu 1999; _cites ref. 19_ | Table 4, p. 8, row 8; `ORC-7BQONVHSSQ` |  |
| Phase transition | 1923 K | 1923 | liquid=μ; _liquid: Ta 0.5; μ: Ta 0.5_ | experimental | [2] Liu 1999; _cites ref. 19_ | Table 4, p. 8, row 3; `ORC-P565Q3L4ZY` |  |
| Phase transition | 1972 K | 1972 | liquid=μ; _liquid: Ta 0.499; μ: Ta 0.499_ | model | [2] Liu 1999 | Table 4, p. 8, row 4; `ORC-BGGMUASYPR` |  |
| Phase transition | 1973 K | 1973 | liquid=μ; _liquid: Ta 0.5; μ: Ta 0.5_ | experimental | [2] Liu 1999; _cites ref. 12_ | Table 4, p. 8, row 5; `ORC-33BCKD2JS5` |  |
| Phase transition | 2273.15 K | 2273.15 | other | model | [3] Shinagawa 2014 | p. 1; `ORC-NLZPAGGJ75` | “Analyzing the present experimental results synthetically, the g0 Co3Ta phase was identified to be a metastable phase, of which the g/g0 transition temperature of the stoichiometric Co3Ta alloy was estimated to be 2000 C.” |

### Phase equilibrium (24)

Table: Phase equilibrium, Co–Ta system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase composition |  | 1173.15 | γ (Co) + χ (Co7Ta2); _γ (Co): Co 0.993, Ta 0.007; χ (Co7Ta2): Co 0.766, Ta 0.234_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 1; `ORC-TZ4HYQUGMN` |  |
| Phase composition |  | 1173.15 | γ + χ + λ3; _γ: Co 0.989, Ta 0.011; χ: Co 0.762, Ta 0.238; λ3: Co 0.732, Ta 0.268_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 16; `ORC-BWRWXRE5AB` |  |
| Phase composition |  | 1273.15 | γ + χ; _γ: Co 0.985, Ta 0.015; χ: Co 0.771, Ta 0.229_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 2; `ORC-XCUKV7Q35H` |  |
| Phase composition |  | 1273.15 | γ + χ + λ3 + λ2 + μ + CoTa2 + α (Ta); _γ: Co 0.987, Ta 0.013; χ: Co 0.766, Ta 0.234; λ3: Co 0.749, Ta 0.251; λ2: Co 0.666, Ta 0.334; μ: Co 0.471, Ta 0.529; CoTa2: Co 0.331, Ta 0.669; α (Ta): Co 0.031, Ta 0.969_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 17; `ORC-ZNKY5AUSS3` |  |
| Phase composition |  | 1373.15 | γ + λ3 (C36); _γ: Co 0.967, Ta 0.033; λ3 (C36): Co 0.762, Ta 0.238_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 3; `ORC-7JMIM3QYF4` |  |
| Phase composition |  | 1373.15 | λ2 + μ + CoTa2 + α; _λ2: Co 0.665, Ta 0.335; μ: Co 0.47, Ta 0.53; CoTa2: Co 0.334, Ta 0.666; α: Co 0.026, Ta 0.974_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 18; `ORC-N5VEK4OZWD` |  |
| Phase composition |  | 1473.15 | γ + λ3; _γ: Co 0.954, Ta 0.046; λ3: Co 0.765, Ta 0.235_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 4; `ORC-5E5QPTMTYQ` |  |
| Phase composition |  | 1473.15 | λ2 + μ; _λ2: Co 0.664, Ta 0.336; μ: Co 0.54, Ta 0.46_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 8; `ORC-OLC7ZDQK3P` |  |
| Phase composition |  | 1473.15 | λ2 + μ + CoTa2 + α; _λ2: Co 0.663, Ta 0.337; μ: Co 0.47, Ta 0.53; CoTa2: Co 0.334, Ta 0.666; α: Co 0.026, Ta 0.974_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 19; `ORC-QPRFYWUY5Z` |  |
| Phase composition |  | 1523.15 | λ2 + μ; _λ2: Co 0.668, Ta 0.332; μ: Co 0.54, Ta 0.46_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 9; `ORC-Y6UXISPHLM` |  |
| Phase composition |  | 1553.15 | λ2 + μ; _λ2: Co 0.664, Ta 0.336; μ: Co 0.539, Ta 0.461_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 10; `ORC-L5KK52OCSD` |  |
| Phase composition |  | 1563.15 | λ2 + μ; _λ2: Co 0.664, Ta 0.336; μ: Co 0.538, Ta 0.462_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 11; `ORC-MR2BL35WVN` |  |
| Phase composition |  | 1573.15 | γ + λ3; _γ: Co 0.942, Ta 0.058; λ3: Co 0.768, Ta 0.232_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 5; `ORC-JOUGKBYDK4` |  |
| Phase composition |  | 1573.15 | λ1 + μ; _λ1: Co 0.637, Ta 0.363; μ: Co 0.541, Ta 0.459_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 12; `ORC-63Q5PFDEBU` |  |
| Phase composition |  | 1573.15 | λ2 + μ + CoTa2 + α; _λ2: Co 0.668, Ta 0.332; μ: Co 0.469, Ta 0.531; CoTa2: Co 0.326, Ta 0.674; α: Co 0.023, Ta 0.977_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 20; `ORC-NL7OL6JWOT` |  |
| Phase composition |  | 1573.15 | μ + CoTa2; _μ: Co 0.466, Ta 0.534; CoTa2: Co 0.356, Ta 0.644_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 15; `ORC-22M7PR4FZE` |  |
| Phase composition |  | 1623.15 | λ1 + μ; _λ1: Co 0.633, Ta 0.367; μ: Co 0.58, Ta 0.42_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 13; `ORC-O25BE2UZV3` |  |
| Phase composition |  | 1623.15 | λ2 (C15) + λ1 (C14); _λ2 (C15): Co 0.66, Ta 0.34; λ1 (C14): Co 0.641, Ta 0.359_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 6; `ORC-VSEBLTAE4K` |  |
| Phase composition |  | 1637.75 | other: Co–12Ta; _liquid: Co 0.88, Ta 0.12_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 12; `ORC-UNWQMRRNIQ` |  |
| Phase composition |  | 1673.15 | λ1 + μ; _λ1: Co 0.632, Ta 0.368; μ: Co 0.538, Ta 0.462_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 14; `ORC-H6I6GYPAQL` |  |
| Phase composition |  | 1673.15 | λ2 + λ1; _λ2: Co 0.664, Ta 0.336; λ1: Co 0.644, Ta 0.356_ | experimental | [3] Shinagawa 2014 | Table 3, p. 6, row 7; `ORC-6K5H6RFJXN` |  |
| Phase composition |  | 1702.45 | other: Co–8.5Ta; _liquid: Co 0.915, Ta 0.085_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 8; `ORC-TOUOP256F5` |  |
| Phase composition |  | 1736.85 | other: Co–3.5Ta; _liquid: Co 0.965, Ta 0.035_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 4; `ORC-5N372VSDKD` |  |
| Phase composition |  | 1754.25 | other: Co–2Ta; _liquid: Ta 0_ | experimental | [3] Shinagawa 2014 | Table 2, p. 5, row 1; `ORC-QJB7BOVZP3` |  |

## Sources

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

1. Cuiping Wang, Xiaodong Chen, Peng Yang, Qianqian Zhang, Shuiyuan Yang, Yong Lu et al., Experimental investigation and thermodynamic assessment of phase equilibria in the Al-Co-Ta ternary system, Journal of Alloys and Compounds 925, 166723 (2022). [doi:10.1016/j.jallcom.2022.166723](https://doi.org/10.1016/j.jallcom.2022.166723)
2. Zi-Kui Liu, Y.Austin Chang, Thermodynamic assessment of the Co-Ta system, Calphad 23, 339-356 (1999). [doi:10.1016/s0364-5916(00)00005-5](https://doi.org/10.1016/s0364-5916%2800%2900005-5)
3. Kazuya Shinagawa, Hibiki Chinen, Toshihiro Omori, Katsunari Oikawa, Ikuo Ohnuma, Kiyohito Ishida et al., Phase equilibria and thermodynamic calculation of the Co–Ta binary system, Intermetallics 49, 87-97 (2014). [doi:10.1016/j.intermet.2014.01.015](https://doi.org/10.1016/j.intermet.2014.01.015)
4. Peisheng Wang, Jörg Koßmann, Ursula R. Kattner, Mauro Palumbo, Thomas Hammerschmidt, Gregory B. Olson, Thermodynamic assessment of the Co-Ta system, Calphad 64, 205-212 (2019). [doi:10.1016/j.calphad.2018.12.002](https://doi.org/10.1016/j.calphad.2018.12.002)

## 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/).