Co–Nb system
124 accepted literature values from 3 paper(s) (experimental 79, model 44, DFT 1); 4 calculated phase diagram(s). 17 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.
Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (11) · papers (bibliography) · Markdown
| Evidence class | Values |
|---|---|
| experimental | 79 |
| model | 44 |
| DFT | 1 |
| Property group | Values |
|---|---|
| invariant reaction | 113 |
| phase transition | 10 |
| crystal structure | 1 |
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.
| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| CoNb-15He.tdb | C. He, F. Stein, M. Palm, J. Alloys Compd., 637, 361-75(2015). doi:10.1016/j.jallcom.2015.02.182 | 870ac3d5afa50fc9b15aa65a93b24982f494e509b11c0b2af862d2e6750fa2ee | viewer · TDB · JSON |
| CoNb-20Zho.tdb | C. Zhou, C. Guo, J. Li, C. Li, Z. Du, Metall. Mater. Trans. A, 51A, 5892-5911(2020). doi:10.1007/s11661-020-05963-2 | 9a76c67c6bba1992dfb73615a3daf596ca477bf15fa7620db3091a6f65501111 | viewer · TDB · JSON |
| CoNb-22Wei.tdb | D. Wei, X. Bai, C. Guo, C. Li, Z. Du, J. Alloys Compd., 924, 166516(2022). doi:10.1016/j.jallcom.2022.166516 | 9d02f9031327c346667ee240eade26f369e95027f857b97859c78bf0399ac0a1 | viewer · TDB · JSON |
| CoNb-98Har-LB.tdb | K.C. Hari Kumar, I. Ansara, P. Wollants, L. Delaye, J. Alloys Compd., 267, 105-12(1998). doi:10.1016/S0925-8388(97)00465-9 | 0243c89a99fdd87054fa4ed923826097efec4ab0c3d84b9309feac564d93e41a | viewer · TDB · JSON |
| TDB file | T (K) | Phases at the invariant |
|---|---|---|
| CoNb-15He.tdb | 1696.18 | C15_LAVES (x(Nb) 0.34716) + C14_LAVES (x(Nb) 0.35998) + LIQUID (x(Nb) 0.41093) |
| CoNb-15He.tdb | 1654.86 | C14_LAVES (x(Nb) 0.37223) + LIQUID (x(Nb) 0.44408) + MU_D85 (x(Nb) 0.4779) |
| CoNb-15He.tdb | 1644.52 | MU_D85 (x(Nb) 0.56446) + LIQUID (x(Nb) 0.59485) + BCC_A2 (x(Nb) 0.9429) |
| CoNb-15He.tdb | 1537.36 | LIQUID (x(Nb) 0.15385) + C36_LAVES (x(Nb) 0.24301) + C15_LAVES (x(Nb) 0.25147) |
| CoNb-15He.tdb | 1511.5 | C15_LAVES (x(Nb) 0.35362) + C14_LAVES (x(Nb) 0.36629) + MU_D85 (x(Nb) 0.47447) |
| CoNb-15He.tdb | 1510.27 | FCC_A1 (x(Nb) 0.05372) + LIQUID (x(Nb) 0.1432) + C36_LAVES (x(Nb) 0.23704) |
| CoNb-15He.tdb | 1358.5 | FCC_A1 (x(Nb) 0.03597) + CO7NB2 (x(Nb) 0.22222) + C36_LAVES (x(Nb) 0.24025) |
| CoNb-15He.tdb | 1358.5 | FCC_A1 (x(Nb) 0.03598) + CO7NB2 (x(Nb) 0.22222) + C36_LAVES (x(Nb) 0.24025) |
| CoNb-15He.tdb | 1302.19 | CO7NB2 (x(Nb) 0.22222) + C36_LAVES (x(Nb) 0.25583) + C15_LAVES (x(Nb) 0.2675) |
| CoNb-15He.tdb | 690.75 | HCP_A3 (x(Nb) 7.000e-5) + FCC_A1 (x(Nb) 5.300e-4) + CO7NB2 (x(Nb) 0.22222) |
| CoNb-15He.tdb | 690.75 | HCP_A3 (x(Nb) 7.000e-5) + FCC_A1 (x(Nb) 5.300e-4) + CO7NB2 (x(Nb) 0.22222) |
| CoNb-20Zho.tdb | 1696.9 | C15_LAVES (x(Nb) 0.34949) + C14_LAVES (x(Nb) 0.3583) + LIQUID (x(Nb) 0.40577) |
| CoNb-20Zho.tdb | 1657.18 | C14_LAVES (x(Nb) 0.37263) + LIQUID (x(Nb) 0.43209) + MU_D85 (x(Nb) 0.48241) |
| CoNb-20Zho.tdb | 1641.54 | MU_D85 (x(Nb) 0.55747) + LIQUID (x(Nb) 0.62663) + BCC_A2 (x(Nb) 0.94206) |
| CoNb-20Zho.tdb | 1537.05 | LIQUID (x(Nb) 0.16365) + C36_LAVES (x(Nb) 0.24637) + C15_LAVES (x(Nb) 0.25058) |
| CoNb-20Zho.tdb | 1525.4 | C15_LAVES (x(Nb) 0.35356) + C14_LAVES (x(Nb) 0.36398) + MU_D85 (x(Nb) 0.48216) |
| CoNb-20Zho.tdb | 1512.04 | FCC_A1 (x(Nb) 0.04913) + LIQUID (x(Nb) 0.15256) + C36_LAVES (x(Nb) 0.24055) |
| CoNb-20Zho.tdb | 1359.01 | FCC_A1 (x(Nb) 0.03455) + CO7NB2 (x(Nb) 0.22222) + C36_LAVES (x(Nb) 0.24423) |
| CoNb-20Zho.tdb | 1359.01 | FCC_A1 (x(Nb) 0.03455) + CO7NB2 (x(Nb) 0.22222) + C36_LAVES (x(Nb) 0.24423) |
| CoNb-20Zho.tdb | 1318.11 | CO7NB2 (x(Nb) 0.22222) + C36_LAVES (x(Nb) 0.25679) + C15_LAVES (x(Nb) 0.26522) |
| CoNb-20Zho.tdb | 688.19 | HCP_A3 (x(Nb) 0) + FCC_A1 (x(Nb) 7.300e-4) + CO7NB2 (x(Nb) 0.22222) |
| CoNb-20Zho.tdb | 688.19 | HCP_A3 (x(Nb) 0) + FCC_A1 (x(Nb) 7.300e-4) + CO7NB2 (x(Nb) 0.22222) |
| CoNb-20Zho.tdb | 688.19 | HCP_A3 (x(Nb) 0) + FCC_A1 (x(Nb) 7.300e-4) + CO7NB2 (x(Nb) 0.22222) |
| CoNb-22Wei.tdb | 1696.89 | C15_LAVES (x(Nb) 0.34778) + C14_LAVES (x(Nb) 0.35947) + LIQUID (x(Nb) 0.40582) |
| CoNb-22Wei.tdb | 1656.21 | C14_LAVES (x(Nb) 0.37375) + LIQUID (x(Nb) 0.43298) + MU_D85 (x(Nb) 0.48206) |
| CoNb-22Wei.tdb | 1637.65 | MU_D85 (x(Nb) 0.55931) + LIQUID (x(Nb) 0.62581) + BCC_A2 (x(Nb) 0.94182) |
| CoNb-22Wei.tdb | 1537.08 | LIQUID (x(Nb) 0.16327) + C36_LAVES (x(Nb) 0.24878) + C15_LAVES (x(Nb) 0.25231) |
| CoNb-22Wei.tdb | 1523.24 | C15_LAVES (x(Nb) 0.35094) + C14_LAVES (x(Nb) 0.36443) + MU_D85 (x(Nb) 0.48186) |
| CoNb-22Wei.tdb | 1511.99 | FCC_A1 (x(Nb) 0.04913) + LIQUID (x(Nb) 0.15258) + C36_LAVES (x(Nb) 0.2448) |
| CoNb-22Wei.tdb | 1359.48 | FCC_A1 (x(Nb) 0.03461) + CO7NB2 (x(Nb) 0.22222) + C36_LAVES (x(Nb) 0.24746) |
| CoNb-22Wei.tdb | 1359.48 | FCC_A1 (x(Nb) 0.03461) + CO7NB2 (x(Nb) 0.22222) + C36_LAVES (x(Nb) 0.24745) |
| CoNb-22Wei.tdb | 1314.07 | CO7NB2 (x(Nb) 0.22222) + C36_LAVES (x(Nb) 0.25743) + C15_LAVES (x(Nb) 0.26372) |
| CoNb-22Wei.tdb | 688.19 | HCP_A3 (x(Nb) 0) + FCC_A1 (x(Nb) 7.300e-4) + CO7NB2 (x(Nb) 0.22222) |
| CoNb-22Wei.tdb | 688.19 | HCP_A3 (x(Nb) 0) + FCC_A1 (x(Nb) 7.300e-4) + CO7NB2 (x(Nb) 0.22222) |
| CoNb-22Wei.tdb | 688.19 | HCP_A3 (x(Nb) 0) + FCC_A1 (x(Nb) 7.300e-4) + CO7NB2 (x(Nb) 0.22222) |
| CoNb-98Har-LB.tdb | 1700.54 | C15_LAVES (x(Nb) 0.33411) + CO16NB9_C14 (x(Nb) 0.36) + LIQUID (x(Nb) 0.42253) |
| CoNb-98Har-LB.tdb | 1700.54 | C15_LAVES (x(Nb) 0.33411) + CO16NB9_C14 (x(Nb) 0.36) + LIQUID (x(Nb) 0.4227) |
| CoNb-98Har-LB.tdb | 1676.02 | CO16NB9_C14 (x(Nb) 0.36) + LIQUID (x(Nb) 0.45004) + MU_D85 (x(Nb) 0.50287) |
| CoNb-98Har-LB.tdb | 1676.02 | CO16NB9_C14 (x(Nb) 0.36) + LIQUID (x(Nb) 0.45048) + MU_D85 (x(Nb) 0.50298) |
| CoNb-98Har-LB.tdb | 1636.67 | MU_D85 (x(Nb) 0.53252) + LIQUID (x(Nb) 0.63288) + BCC_A2 (x(Nb) 0.97019) |
| CoNb-98Har-LB.tdb | 1521.8 | LIQUID (x(Nb) 0.13815) + CO3NB_C36 (x(Nb) 0.25) + C15_LAVES (x(Nb) 0.27146) |
| CoNb-98Har-LB.tdb | 1503.83 | FCC_A1 (x(Nb) 0.05191) + LIQUID (x(Nb) 0.13012) + CO3NB_C36 (x(Nb) 0.25) |
| CoNb-98Har-LB.tdb | 1503.83 | FCC_A1 (x(Nb) 0.05191) + LIQUID (x(Nb) 0.13011) + CO3NB_C36 (x(Nb) 0.25) |
| CoNb-98Har-LB.tdb | 1485.18 | C15_LAVES (x(Nb) 0.33438) + CO16NB9_C14 (x(Nb) 0.36) + MU_D85 (x(Nb) 0.50373) |
| CoNb-98Har-LB.tdb | 1485.18 | C15_LAVES (x(Nb) 0.33438) + CO16NB9_C14 (x(Nb) 0.36) + MU_D85 (x(Nb) 0.50373) |
| CoNb-98Har-LB.tdb | 1313.09 | FCC_A1 (x(Nb) 0.02619) + CO7NB2 (x(Nb) 0.22222) + CO3NB_C36 (x(Nb) 0.25) |
| CoNb-98Har-LB.tdb | 1313.09 | FCC_A1 (x(Nb) 0.02621) + CO7NB2 (x(Nb) 0.22222) + CO3NB_C36 (x(Nb) 0.25) |
| CoNb-98Har-LB.tdb | 1313.09 | FCC_A1 (x(Nb) 0.02624) + CO7NB2 (x(Nb) 0.22222) + CO3NB_C36 (x(Nb) 0.25) |
| CoNb-98Har-LB.tdb | 1277.93 | CO7NB2 (x(Nb) 0.22222) + CO3NB_C36 (x(Nb) 0.25) + C15_LAVES (x(Nb) 0.28652) |
| CoNb-98Har-LB.tdb | 1277.93 | CO7NB2 (x(Nb) 0.22222) + CO3NB_C36 (x(Nb) 0.25) + C15_LAVES (x(Nb) 0.28657) |
| CoNb-98Har-LB.tdb | 694.19 | HCP_A3 (x(Nb) 0) + FCC_A1 (x(Nb) 9.000e-5) + CO7NB2 (x(Nb) 0.22222) |
| CoNb-98Har-LB.tdb | 694.19 | HCP_A3 (x(Nb) 0) + FCC_A1 (x(Nb) 9.000e-5) + CO7NB2 (x(Nb) 0.22222) |
Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull CoNb-15He · CALPHAD hull CoNb-20Zho · CALPHAD hull CoNb-98Har-LB
Invariant reactions (literature)
| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|
| 1813.15 | congruent melting: L = C15 | experimental | [1] He 2015 cites Shurin 1964 | Table 3, p. 6, row 5 report | ||
| 1793.15 | congruent melting: Liq. -> λ2 | Liq.: Nb 0.333; λ2: Nb 0.333 | experimental | [2] Zhou 2020 cites SK 1970 | Table VI, p. 13, row 11 report | |
| 1793.15 | congruent melting: L = C15 | L: Nb 0.333; C15: Nb 0.333 | experimental | [1] He 2015 cites Bataleva 1970 | Table 3, p. 6, row 4 report | |
| 1757.15 | congruent melting: Liq. -> λ2 | Liq.: Nb 0.328; λ2: Nb 0.328 | model | [2] Zhou 2020 | Table VI, p. 13, row 9 report | |
| 1757.15 | congruent melting: Liq. -> λ2 | experimental | [2] Zhou 2020 cites Stein 2008 doi | Table VI, p. 13, row 12 report | ||
| 1757.15 | congruent melting: L = C15 | L: Nb 0.333; C15: Nb 0.333 | experimental | [1] He 2015 cites Stein 2008 doi | Table 3, p. 6, row 2 report | |
| 1754.15 | congruent melting: L = C15 | L: Nb 0.32; C15: Nb 0.32 | model | [1] He 2015 | Table 3, p. 6, row 1 report | |
| 1753.15 | congruent melting: Liq. -> λ2 | Liq.: Nb 0.32; λ2: Nb 0.32 | experimental | [2] Zhou 2020 cites Pargeter 1967 doi | Table VI, p. 13, row 10 report | |
| 1753.15 | congruent melting: L = C15 | L: Nb 0.32; C15: Nb 0.32 | experimental | [1] He 2015 cites Pargeter 1967 doi | Table 3, p. 6, row 3 report | |
| 1748.15 | congruent melting: L = Co7Nb6(μ) | L: Nb 0.52; Co7Nb6(μ): Nb 0.52 | experimental | [1] He 2015 cites Shurin 1964 | Table 3, p. 6, row 15 report | |
| 1748.15 | congruent melting: L = C15 | L: Nb 0.328; C15: Nb 0.328 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 6 report | |
| 1713.15 | peritectic: Liq + C15 = C14 | experimental | [1] He 2015 cites Shurin 1964 | Table 3, p. 6, row 10 report | ||
| 1713 | peritectic: λ + liq -> Co16Nb9 | Co16Nb9: Nb 0.36 | experimental | [3] Kumar 1998 cites Shurin 1964 | Table 4, p. 7, row 21 report | |
| 1703.15 | congruent melting: Liq. -> CoNb | Liq.: Nb 0.517; CoNb: Nb 0.517 | model | [2] Zhou 2020 | Table VI, p. 13, row 20 report | |
| 1703.15 | congruent melting: Liq. -> CoNb | Liq.: Nb 0.51; CoNb: Nb 0.51 | experimental | [2] Zhou 2020 cites SK 1970 | Table VI, p. 13, row 22 report | |
| 1703.15 | congruent melting: L = Co7Nb6(μ) | L: Nb 0.51; Co7Nb6(μ): Nb 0.51 | experimental | [1] He 2015 cites Bataleva 1970 | Table 3, p. 6, row 14 report | |
| 1701.15 | peritectic: Liq + C15 = C14 | Liq: Nb 0.423; C15: Nb 0.334; C14: Nb 0.36 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 11 report | |
| 1701 | peritectic: λ + liq -> Co16Nb9 | λ: Nb 0.334; L: Nb 0.423; Co16Nb9: Nb 0.36 | model | [3] Kumar 1998 | Table 4, p. 7, row 19 report | |
| 1697.15 | peritectic: Liq + C15 = C14 | Liq: Nb 0.42; C15: Nb 0.345; C14: Nb 0.365 | experimental | [1] He 2015 cites Stein 2008 doi | Table 3, p. 6, row 8 report | |
| 1697.15 | Liq. + λ2 -> λ1 | Liq.: Nb 0.406; λ2: Nb 0.35; λ1: Nb 0.358 | model | [2] Zhou 2020 | Table VI, p. 13, row 13 report | |
| 1697.15 | congruent melting: L = Co7Nb6(μ) | L: Nb 0.518; Co7Nb6(μ): Nb 0.518 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 16 report | |
| 1697.15 | Liq. + λ2 -> λ1 | Liq.: Nb 0.42; λ2: Nb 0.345; λ1: Nb 0.365 | experimental | [2] Zhou 2020 cites Stein 2008 doi | Table VI, p. 13, row 15 report | |
| 1696.15 | peritectic: Liq + C15 = C14 | Liq: Nb 0.41; C15: Nb 0.347; C14: Nb 0.36 | model | [1] He 2015 | Table 3, p. 6, row 7 report | |
| 1693.15 | Liq. + λ2 -> λ1 | Liq.: Nb 0.47 | experimental | [2] Zhou 2020 cites SK 1970 | Table VI, p. 13, row 14 report | |
| 1693.15 | peritectic: Liq + C15 = C14 | Liq: Nb 0.47 | experimental | [1] He 2015 cites Bataleva 1970 | Table 3, p. 6, row 9 report | |
| 1693 | peritectic: λ + liq -> Co16Nb9 | L: Nb 0.47; Co16Nb9: Nb 0.36 | experimental | [3] Kumar 1998 cites Bataleva 1970 | Table 4, p. 7, row 20 report | |
| 1676.15 | eutectic: L = Co7Nb6(μ) + C14 | L: Nb 0.451; Co7Nb6(μ): Nb 0.503; C14: Nb 0.36 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 22 report | |
| 1676 | eutectic: liq -> μ + Co16Nb9 | L: Nb 0.451; μ: Nb 0.503; Co16Nb9: Nb 0.36 | model | [3] Kumar 1998 | Table 4, p. 7, row 22 report | |
| 1675.15 | congruent melting: Liq. -> CoNb | Liq.: Nb 0.515; CoNb: Nb 0.515 | experimental | [2] Zhou 2020 cites Pargeter 1967 doi | Table VI, p. 13, row 21 report | |
| 1675.15 | congruent melting: L = Co7Nb6(μ) | L: Nb 0.515; Co7Nb6(μ): Nb 0.515 | experimental | [1] He 2015 cites Pargeter 1967 doi | Table 3, p. 6, row 13 report | |
| 1672.15 | congruent melting: L = Co7Nb6(μ) | L: Nb 0.503; Co7Nb6(μ): Nb 0.503 | model | [1] He 2015 | Table 3, p. 6, row 12 report | |
| 1656.15 | eutectic: Liq. -> λ1 + CoNb | Liq.: Nb 0.433; λ1: Nb 0.373; CoNb: Nb 0.482 | model | [2] Zhou 2020 | Table VI, p. 13, row 16 report | |
| 1655.15 | eutectic: L = Co7Nb6(μ) + C14 | L: Nb 0.444; Co7Nb6(μ): Nb 0.478; C14: Nb 0.372 | model | [1] He 2015 | Table 3, p. 6, row 17 report | |
| 1653.15 | eutectic: L = (Nb) + Co7Nb6(μ) | Co7Nb6(μ): Co 0.538462, Nb 0.461538 | experimental | [1] He 2015 cites Shurin 1964 | Table 3, p. 6, row 27 report | |
| 1653.15 | eutectic: L = Co7Nb6(μ) + C14 | Co7Nb6(μ): Co 0.538462, Nb 0.461538 | experimental | [1] He 2015 cites Shurin 1964 | Table 3, p. 6, row 21 report | |
| 1653 | eutectic: liq -> μ + Co16Nb9 | Co16Nb9: Nb 0.36 | experimental | [3] Kumar 1998 cites Shurin 1964 | Table 4, p. 7, row 24 report | |
| 1653 | eutectic: liq -> μ + bcc | bcc: Nb 0.984 | experimental | [3] Kumar 1998 cites Shurin 1964 | Table 4, p. 7, row 28 report | |
| 1652.15 | eutectic: Liq. -> λ1 + CoNb | λ1: Nb 0.37; CoNb: Nb 0.47 | experimental | [2] Zhou 2020 cites Stein 2008 doi | Table VI, p. 13, row 19 report | |
| 1652.15 | eutectic: L = Co7Nb6(μ) + C14 | L: Nb 0.45; Co7Nb6(μ): Nb 0.47; C14: Nb 0.37 | experimental | [1] He 2015 cites Stein 2008 doi | Table 3, p. 6, row 18 report | |
| 1651.15 | eutectic: L = Co7Nb6(μ) + C14 | Co7Nb6(μ): Co 0.538462, Nb 0.461538 | experimental | [1] He 2015 cites Pargeter 1967 doi | Table 3, p. 6, row 19 report | |
| 1651.15 | eutectic: Liq. -> λ1 + CoNb | Liq.: Nb 0.43; CoNb: Nb 0.505 | experimental | [2] Zhou 2020 cites Pargeter 1967 doi | Table VI, p. 13, row 17 report | |
| 1647.15 | eutectic: Liq. -> CoNb + bcc(Nb) | Liq.: Nb 0.61; CoNb: Nb 0.527; bcc(Nb): Nb 0.969 | experimental | [2] Zhou 2020 cites Pargeter 1967 doi | Table VI, p. 13, row 24 report | |
| 1647.15 | eutectic: L = (Nb) + Co7Nb6(μ) | L: Nb 0.61; (Nb): Nb 0.969; Co7Nb6(μ): Nb 0.527 | experimental | [1] He 2015 cites Pargeter 1967 doi | Table 3, p. 6, row 25 report | |
| 1647 | eutectic: liq -> μ + bcc | L: Nb 0.61; μ: Nb 0.527; bcc: Nb 0.969 | experimental | [3] Kumar 1998 cites Pargeter 1967 doi | Table 4, p. 7, row 26 report | |
| 1644.15 | eutectic: L = (Nb) + Co7Nb6(μ) | L: Nb 0.595; (Nb): Nb 0.943; Co7Nb6(μ): Nb 0.564 | model | [1] He 2015 | Table 3, p. 6, row 23 report | |
| 1643.15 | eutectic: L = (Nb) + Co7Nb6(μ) | L: Nb 0.65; Co7Nb6(μ): Co 0.538462, Nb 0.461538 | experimental | [1] He 2015 cites Bataleva 1970 | Table 3, p. 6, row 26 report | |
| 1643.15 | eutectic: Liq. -> λ1 + CoNb | Liq.: Nb 0.47; CoNb: Co 0.5, Nb 0.5 | experimental | [2] Zhou 2020 cites SK 1970 | Table VI, p. 13, row 18 report | |
| 1643.15 | eutectic: Liq. -> CoNb + bcc(Nb) | Liq.: Nb 0.65; CoNb: Co 0.5, Nb 0.5 | experimental | [2] Zhou 2020 cites SK 1970 | Table VI, p. 13, row 25 report | |
| 1643.15 | eutectic: L = Co7Nb6(μ) + C14 | L: Nb 0.47; Co7Nb6(μ): Co 0.538462, Nb 0.461538 | experimental | [1] He 2015 cites Bataleva 1970 | Table 3, p. 6, row 20 report | |
| 1643 | eutectic: liq -> μ + bcc | L: Nb 0.65 | experimental | [3] Kumar 1998 cites Bataleva 1970 | Table 4, p. 7, row 27 report | |
| 1643 | eutectic: liq -> μ + Co16Nb9 | L: Nb 0.47; Co16Nb9: Nb 0.36 | experimental | [3] Kumar 1998 cites Bataleva 1970 | Table 4, p. 7, row 23 report | |
| 1638.15 | eutectic: Liq. -> CoNb + bcc(Nb) | Liq.: Nb 0.626; CoNb: Nb 0.559; bcc(Nb): Nb 0.942 | model | [2] Zhou 2020 | Table VI, p. 13, row 23 report | |
| 1637.15 | eutectic: L = (Nb) + Co7Nb6(μ) | L: Nb 0.633; (Nb): Nb 0.97; Co7Nb6(μ): Nb 0.533 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 28 report | |
| 1637 | eutectic: liq -> μ + bcc | L: Nb 0.633; μ: Nb 0.533; bcc: Nb 0.97 | model | [3] Kumar 1998 | Table 4, p. 7, row 25 report | |
| 1596.15 | peritectic: (αCo)+C36 = Co7Nb2 | Co7Nb2: Co 0.777778, Nb 0.222222 | experimental | [1] He 2015 cites Bataleva 1970 | Table 3, p. 6, row 46 report | |
| 1537.15 | peritectic: L + C15 = C36 | L: Nb 0.145; C15: Nb 0.26; C36: Nb 0.25 | experimental | [1] He 2015 cites Stein 2008 doi | Table 3, p. 6, row 30 report | |
| 1537.15 | peritectic: L + C15 = C36 | L: Nb 0.154; C15: Nb 0.251; C36: Nb 0.243 | model | [1] He 2015 | Table 3, p. 6, row 29 report | |
| 1537.15 | Liq. + λ2 -> λ3 | Liq.: Nb 0.164; λ2: Nb 0.251; λ3: Nb 0.246 | model | [2] Zhou 2020 | Table VI, p. 13, row 5 report | |
| 1537.15 | Liq. + λ2 -> λ3 | Liq.: Nb 0.145; λ2: Nb 0.26; λ3: Nb 0.25 | experimental | [2] Zhou 2020 cites Stein 2008 doi | Table VI, p. 13, row 8 report | |
| 1523.15 | λ1 -> λ2 + CoNb | λ1: Nb 0.355; λ2: Nb 0.365; CoNb: Nb 0.465 | experimental | [2] Zhou 2020 cites Stein 2008 doi | Table VI, p. 13, row 35 report | |
| 1523.15 | eutectoid: C14 = C15 + Co7Nb6(μ) | C14: Nb 0.365; C15: Nb 0.355; Co7Nb6(μ): Nb 0.465 | experimental | [1] He 2015 cites Stein 2008 doi | Table 3, p. 6, row 35 report | |
| 1523.15 | λ1 -> λ2 + CoNb | λ1: Nb 0.354; λ2: Nb 0.364; CoNb: Nb 0.482 | model | [2] Zhou 2020 | Table VI, p. 13, row 33 report | |
| 1522.15 | peritectic: L + C15 = C36 | L: Nb 0.138; C15: Nb 0.271; C36: Nb 0.25 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 33 report | |
| 1522 | peritectic: liq + λ -> Co3Nb | L: Nb 0.138; λ: Nb 0.271; Co3Nb: Nb 0.25 | model | [3] Kumar 1998 | Table 4, p. 7, row 16 report | |
| 1520.15 | peritectic: L + C15 = C36 | L: Nb 0.145; C15: Nb 0.273 | experimental | [1] He 2015 cites Pargeter 1967 doi | Table 3, p. 6, row 31 report | |
| 1520.15 | Liq. + λ2 -> λ3 | Liq.: Nb 0.145; λ2: Nb 0.273 | experimental | [2] Zhou 2020 cites Pargeter 1967 doi | Table VI, p. 13, row 6 report | |
| 1520 | peritectic: liq + λ -> Co3Nb | L: Nb 0.145; λ: Nb 0.273; Co3Nb: Nb 0.25 | experimental | [3] Kumar 1998 cites Pargeter 1967 doi | Table 4, p. 7, row 18 report | |
| 1513.15 | peritectic: L + C15 = C36 | L: Nb 0.165 | experimental | [1] He 2015 cites Bataleva 1970 | Table 3, p. 6, row 32 report | |
| 1513.15 | Liq. + λ2 -> λ3 | Liq.: Nb 0.165 | experimental | [2] Zhou 2020 cites SK 1970 | Table VI, p. 13, row 7 report | |
| 1513 | peritectic: liq + λ -> Co3Nb | L: Nb 0.165; Co3Nb: Nb 0.25 | experimental | [3] Kumar 1998 cites Bataleva 1970 | Table 4, p. 7, row 17 report | |
| 1512.15 | eutectic: liq. -> fcc(Co) + λ3 | liq.: Nb 0.153; fcc(Co): Nb 0.049; λ3: Nb 0.241 | model | [2] Zhou 2020 | Table VI, p. 13, row 1 report | |
| 1512.15 | eutectic: liq. -> fcc(Co) + λ3 | liq.: Nb 0.139; fcc(Co): Nb 0.055; λ3: Nb 0.245 | experimental | [2] Zhou 2020 cites Stein 2008 doi | Table VI, p. 13, row 4 report | |
| 1512.15 | eutectic: L = (αCo) + C36 | L: Nb 0.14; (αCo): Nb 0.055; C36: Nb 0.245 | experimental | [1] He 2015 cites Stein 2008 doi | Table 3, p. 6, row 40 report | |
| 1511.15 | eutectoid: C14 = C15 + Co7Nb6(μ) | C14: Nb 0.366; C15: Nb 0.354; Co7Nb6(μ): Nb 0.474 | model | [1] He 2015 | Table 3, p. 6, row 34 report | |
| 1510.15 | eutectic: liq. -> fcc(Co) + λ3 | liq.: Nb 0.139; fcc(Co): Nb 0.055 | experimental | [2] Zhou 2020 cites Pargeter 1967 doi | Table VI, p. 13, row 2 report | |
| 1510.15 | eutectic: L = (αCo) + C36 | L: Nb 0.143; (αCo): Nb 0.054; C36: Nb 0.237 | model | [1] He 2015 | Table 3, p. 6, row 39 report | |
| 1510.15 | eutectic: L = (αCo) + C36 | L: Nb 0.139; (αCo): Nb 0.055 | experimental | [1] He 2015 cites Pargeter 1967 doi | Table 3, p. 6, row 41 report | |
| 1510 | eutectic: liq -> fcc + Co3Nb | L: Nb 0.139; fcc: Nb 0.055; Co3Nb: Nb 0.25 | experimental | [3] Kumar 1998 cites Pargeter 1967 doi | Table 4, p. 7, row 13 report | |
| 1508 | eutectic: liq -> fcc + Co3Nb | L: Nb 0.145; Co3Nb: Nb 0.25 | experimental | [3] Kumar 1998 cites Hansen 1958 doi | Table 4, p. 7, row 15 report | |
| 1504.15 | eutectic: L = (αCo) + C36 | L: Nb 0.13; (αCo): Nb 0.051; C36: Nb 0.25 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 43 report | |
| 1504 | eutectic: liq -> fcc + Co3Nb | L: Nb 0.13; fcc: Nb 0.051; Co3Nb: Nb 0.25 | model | [3] Kumar 1998 | Table 4, p. 7, row 11 report | |
| 1498.15 | eutectoid: C14 = C15 + Co7Nb6(μ) | Co7Nb6(μ): Co 0.538462, Nb 0.461538 | experimental | [1] He 2015 cites Shurin 1964 | Table 3, p. 6, row 37 report | |
| 1498 | eutectoid: Co16Nb9 -> λ + μ | Co16Nb9: Nb 0.36 | experimental | [3] Kumar 1998 cites Shurin 1964 | Table 4, p. 7, row 35 report | |
| 1485.15 | eutectoid: C14 = C15 + Co7Nb6(μ) | Co7Nb6(μ): Co 0.538462, Nb 0.461538 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 38 report | |
| 1485 | eutectoid: Co16Nb9 -> λ + μ | Co16Nb9: Nb 0.36; λ: Nb 0.334; μ: Nb 0.504 | model | [3] Kumar 1998 | Table 4, p. 7, row 33 report | |
| 1483.15 | eutectic: liq. -> fcc(Co) + λ3 | liq.: Nb 0.15 | experimental | [2] Zhou 2020 cites SK 1970 | Table VI, p. 13, row 3 report | |
| 1483.15 | eutectic: L = (αCo) + C36 | L: Nb 0.15 | experimental | [1] He 2015 cites Bataleva 1970 | Table 3, p. 6, row 42 report | |
| 1483 | eutectic: liq -> fcc + Co3Nb | L: Nb 0.15; Co3Nb: Nb 0.25 | experimental | [3] Kumar 1998 cites Bataleva 1970 | Table 4, p. 7, row 12 report | |
| 1483 | eutectic: liq -> fcc + Co3Nb | Co3Nb: Nb 0.25 | experimental | [3] Kumar 1998 cites Shurin 1964 | Table 4, p. 7, row 14 report | |
| 1473.15 | λ1 -> λ2 + CoNb | CoNb: Co 0.5, Nb 0.5 | experimental | [2] Zhou 2020 cites SK 1970 | Table VI, p. 13, row 34 report | |
| 1473.15 | eutectoid: C14 = C15 + Co7Nb6(μ) | Co7Nb6(μ): Co 0.538462, Nb 0.461538 | experimental | [1] He 2015 cites Bataleva 1970 | Table 3, p. 6, row 36 report | |
| 1473 | eutectoid: Co16Nb9 -> λ + μ | Co16Nb9: Nb 0.36 | experimental | [3] Kumar 1998 cites Bataleva 1970 | Table 4, p. 7, row 34 report | |
| 1359.15 | peritectic: (αCo)+C36 = Co7Nb2 | (αCo): Nb 0.037; C36: Nb 0.245; Co7Nb2: Nb 0.222 | experimental | [1] He 2015 cites Stein 2008 doi | Table 3, p. 6, row 45 report | |
| 1359.15 | fcc(Co) + λ3 -> Co7Nb2 | fcc(Co): Nb 0.037; λ3: Nb 0.245; Co7Nb2: Nb 0.222 | experimental | [2] Zhou 2020 cites Stein 2008 doi | Table VI, p. 13, row 29 report | |
| 1359.15 | fcc(Co) + λ3 -> Co7Nb2 | fcc(Co): Nb 0.035; λ3: Nb 0.244; Co7Nb2: Nb 0.222 | model | [2] Zhou 2020 | Table VI, p. 13, row 27 report | |
| 1358.15 | peritectic: (αCo)+C36 = Co7Nb2 | (αCo): Nb 0.036; C36: Nb 0.24; Co7Nb2: Nb 0.222 | model | [1] He 2015 | Table 3, p. 6, row 44 report | |
| 1323.15 | fcc(Co) + λ3 -> Co7Nb2 | Co7Nb2: Co 0.777778, Nb 0.222222 | experimental | [2] Zhou 2020 cites SK 1970 | Table VI, p. 13, row 28 report | |
| 1323 | peritectoid: fcc + Co3Nb -> Co7Nb2 | Co3Nb: Nb 0.25; Co7Nb2: Nb 0.222222 | experimental | [3] Kumar 1998 cites Bataleva 1970 | Table 4, p. 7, row 30 report | |
| 1318.15 | λ3 -> Co7Nb2 + λ2 | λ3: Nb 0.257; Co7Nb2: Nb 0.222; λ2: Nb 0.265 | model | [2] Zhou 2020 | Table VI, p. 13, row 30 report | |
| 1313.15 | λ3 -> Co7Nb2 + λ2 | λ3: Nb 0.25; Co7Nb2: Nb 0.222; λ2: Nb 0.26 | experimental | [2] Zhou 2020 cites Stein 2008 doi | Table VI, p. 13, row 32 report | |
| 1313.15 | eutectoid: C36 = Co7Nb2 + C15 | C36: Nb 0.25; Co7Nb2: Nb 0.222; C15: Nb 0.26 | experimental | [1] He 2015 cites Stein 2008 doi | Table 3, p. 6, row 49 report | |
| 1313.15 | peritectic: (αCo)+C36 = Co7Nb2 | (αCo): Nb 0.026; C36: Nb 0.25; Co7Nb2: Nb 0.22 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 47 report | |
| 1313 | peritectoid: fcc + Co3Nb -> Co7Nb2 | fcc: Nb 0.026; Co3Nb: Nb 0.25; Co7Nb2: Nb 0.222 | model | [3] Kumar 1998 | Table 4, p. 7, row 29 report | |
| 1302.15 | eutectoid: C36 = Co7Nb2 + C15 | C36: Nb 0.256; Co7Nb2: Nb 0.222; C15: Nb 0.268 | model | [1] He 2015 | Table 3, p. 6, row 48 report | |
| 1278.15 | eutectoid: C36 = Co7Nb2 + C15 | C36: Nb 0.25; Co7Nb2: Nb 0.222; C15: Nb 0.287 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 51 report | |
| 1278 | eutectoid: Co3Nb -> Co7Nb2 + λ | Co3Nb: Nb 0.25; Co7Nb2: Nb 0.222; λ: Nb 0.287 | model | [3] Kumar 1998 | Table 4, p. 7, row 31 report | |
| 1273.15 | eutectoid: C36 = Co7Nb2 + C15 | Co7Nb2: Co 0.777778, Nb 0.222222 | experimental | [1] He 2015 cites Bataleva 1970 | Table 3, p. 6, row 50 report | |
| 1273.15 | λ3 -> Co7Nb2 + λ2 | Co7Nb2: Co 0.777778, Nb 0.222222 | experimental | [2] Zhou 2020 cites SK 1970 | Table VI, p. 13, row 31 report | |
| 1273 | eutectoid: Co3Nb -> Co7Nb2 + λ | Co3Nb: Nb 0.25; Co7Nb2: Nb 0.222222 | experimental | [3] Kumar 1998 cites Bataleva 1970 | Table 4, p. 7, row 32 report | |
| 694.18 | eutectoid: fcc -> hcp + Co7Nb2 | fcc: Nb 8.580e-5; hcp: Nb 6.080e-7; Co7Nb2: Nb 0.222 | model | [3] Kumar 1998 | Table 4, p. 7, row 36 report | |
| 694.15 | eutectoid: (αCo) = (εCo) + Co7Nb2 | (αCo): Nb 8.600e-5; (εCo): Nb 1.000e-6; Co7Nb2: Nb 0.222 | model | [1] He 2015 cites Kumar 1998 doi | Table 3, p. 6, row 53 report | |
| 691.15 | eutectoid: (αCo) = (εCo) + Co7Nb2 | (αCo): Nb 5.000e-4; (εCo): Nb 7.000e-5; Co7Nb2: Nb 0.222 | model | [1] He 2015 | Table 3, p. 6, row 52 report | |
| 688.15 | fcc(Co) -> hcp(Co) + Co7Nb2 | fcc(Co): Nb 0.001; Co7Nb2: Nb 0.222 | model | [2] Zhou 2020 | Table VI, p. 13, row 36 report |
Other properties
Phase transition (10)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Phase transition | 1675 K | 1675 | congruent melting: liq -> μ L: Nb 0.515; μ: Nb 0.515 | experimental | [3] Kumar 1998 cites Pargeter 1967 doi | Table 4, p. 7, row 3 report | |
| Phase transition | 1697 K | 1697 | congruent melting: liq -> μ L: Nb 0.518; μ: Nb 0.518 | model | [3] Kumar 1998 | Table 4, p. 7, row 1 report | |
| Phase transition | 1703 K | 1703 | congruent melting: liq -> μ L: Nb 0.51; μ: Nb 0.51 | experimental | [3] Kumar 1998 cites Bataleva 1970 | Table 4, p. 7, row 2 report | |
| Phase transition | 1748 K | 1748 | congruent melting: liq -> λ L: Nb 0.328; λ: Nb 0.328 | model | [3] Kumar 1998 | Table 4, p. 7, row 5 report | |
| Phase transition | 1748 K | 1748 | congruent melting: liq -> μ L: Nb 0.52; μ: Nb 0.52 | experimental | [3] Kumar 1998 cites Shurin 1964 | Table 4, p. 7, row 4 report | |
| Phase transition | 1753 K | 1753 | congruent melting: liq -> λ L: Nb 0.32; λ: Nb 0.32 | experimental | [3] Kumar 1998 cites Pargeter 1967 doi | Table 4, p. 7, row 7 report | |
| Phase transition | 1793 K | 1793 | congruent melting: liq -> λ L: Nb 0.34; λ: Nb 0.34 | experimental | [3] Kumar 1998 cites Bataleva 1970 | Table 4, p. 7, row 6 report | |
| Phase transition | 1813 K | 1813 | congruent melting: liq -> λ | experimental | [3] Kumar 1998 cites Shurin 1964 | Table 4, p. 7, row 8 report | |
| Phase transition | 1823 K | 1823 | congruent melting: liq -> λ L: Nb 0.286; λ: Nb 0.286 | experimental | [3] Kumar 1998 cites Koster 1938 doi | Table 4, p. 7, row 10 report | |
| Phase transition | 1843 K | 1843 | congruent melting: liq -> λ L: Nb 0.333; λ: Nb 0.333 | experimental | [3] Kumar 1998 cites Elliot 1954 | Table 4, p. 7, row 9 report |
Crystal structure (1)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Molar volume printed: V0 | 12.13 Å3/atom | 0 | Co7Nb2 alloy: Nb 0.222222 | DFT | [2] Zhou 2020 | Table V, p. 12, row 4 report |
Sources
Reporting papers the values were read from (a value cited from another work names that work in its row).
- Cuiyun He, Frank Stein, Martin Palm, Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb, Journal of Alloys and Compounds 637, 361-375 (2015). doi:10.1016/j.jallcom.2015.02.182
- Chenyang Zhou, Cuiping Guo, Jingbo Li, Changrong Li, Zhenmin Du, Key Experiments and Thermodynamic Description of the Co-Nb-Ni System, Metall Mater Trans A 51, 5892-5911 (2020). doi:10.1007/s11661-020-05963-2
- K.C.Hari Kumar, I. Ansara, P. Wollants, L. Delaey, Thermodynamic optimisation of the Co–Nb system, Journal of Alloys and Compounds 267, 105-112 (1998). doi:10.1016/s0925-8388(97)00465-9