Al–Ta system
225 accepted literature values from 4 paper(s) (experimental 141, model 55, DFT 1, unspecified 28); 4 calculated phase diagram(s). 13 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 (14) · papers (bibliography) · Markdown
| Evidence class | Values |
|---|---|
| experimental | 141 |
| model | 55 |
| DFT | 1 |
| unspecified | 28 |
| Property group | Values |
|---|---|
| invariant reaction | 50 |
| phase transition | 67 |
| phase equilibrium | 24 |
| formation | 10 |
| heat capacity / entropy / enthalpy | 12 |
| activity / EMF / Gibbs energy | 10 |
| crystal structure | 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.
| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| AlTa-10Wit.tdb | V.T. Witusiewicz, A.A. Bondar, U. Hecht, J. Zollinger, V.M. Petyukh, O.S. Fomichov, V.M. Voblikov, S. Rex, Intermetallics, 18, 92-106(2010). doi:10.1016/j.intermet.2009.06.015 | 667ded9a7ea8878f3222ee4f662340df13cf6f2d940a83ab8f5c516a9de1d21d | viewer · TDB · JSON |
| AlTa-90Kat.tdb | U. Kattner, unpublished, 1990 | a4157073c1d594d6499968e97e6578f1f11ff260a11bd747040e7150e2af7755 | viewer · TDB · JSON |
| AlTa-96Du-LB.tdb | Y. Du, R. Schmid-Fetzer, J. Phase Equilib., 17, 311-324(1996). doi:10.1007/BF02665557 | db1782b402270c1409f3fd8e43bd1f2098c4ec9f6a46ef979dc7ac7b3378fdd9 | viewer · TDB · JSON |
| AlTa-98Sau.tdb | N. Saunders, COST 507, Final report round 2, 1998. | 790811d9dcc140fcdf7588bfa4873178564f71350062bbe75849a62e6974132c | viewer · TDB · JSON |
| TDB file | T (K) | Phases at the invariant |
|---|---|---|
| AlTa-10Wit.tdb | 2346.46 | LIQUID (x(Ta) 0.6776) + SIGMA_D8B (x(Ta) 0.75882) + BCC_A2 (x(Ta) 0.93017) |
| AlTa-10Wit.tdb | 1884.72 | LIQUID (x(Ta) 0.32667) + AL69TA39 (x(Ta) 0.37818) + SIGMA_D8B (x(Ta) 0.50945) |
| AlTa-10Wit.tdb | 1814.46 | LIQUID (x(Ta) 0.23731) + AL3TA_D022 (x(Ta) 0.24406) + AL69TA39 (x(Ta) 0.35489) |
| AlTa-10Wit.tdb | 1728.41 | AL69TA39 (x(Ta) 0.37542) + SIGMA_D8B (x(Ta) 0.51069) + AL38TA48 (x(Ta) 0.52155) |
| AlTa-10Wit.tdb | 1371.45 | AL3TA_D022 (x(Ta) 0.24995) + AL69TA39 (x(Ta) 0.36795) + AL38TA48 (x(Ta) 0.52365) |
| AlTa-10Wit.tdb | 933.7 | LIQUID (x(Ta) 4.000e-5) + FCC_A1 (x(Ta) 3.800e-4) + AL3TA_D022 (x(Ta) 0.24736) |
| AlTa-10Wit.tdb | 933.7 | LIQUID (x(Ta) 4.000e-5) + FCC_A1 (x(Ta) 3.800e-4) + AL3TA_D022 (x(Ta) 0.24736) |
| AlTa-90Kat.tdb | 2378.58 | LIQUID (x(Ta) 0.57678) + SIGMA_D8B (x(Ta) 0.69621) + BCC_A2 (x(Ta) 0.95956) |
| AlTa-90Kat.tdb | 2037.05 | LIQUID (x(Ta) 0.3588) + ALTA (x(Ta) 0.51515) + SIGMA_D8B (x(Ta) 0.54172) |
| AlTa-90Kat.tdb | 2037.05 | LIQUID (x(Ta) 0.35875) + ALTA (x(Ta) 0.51515) + SIGMA_D8B (x(Ta) 0.54168) |
| AlTa-90Kat.tdb | 1867.6 | LIQUID (x(Ta) 0.28252) + AL2TA (x(Ta) 0.35) + ALTA (x(Ta) 0.51515) |
| AlTa-90Kat.tdb | 1867.6 | LIQUID (x(Ta) 0.28258) + AL2TA (x(Ta) 0.35) + ALTA (x(Ta) 0.51515) |
| AlTa-90Kat.tdb | 1867.6 | LIQUID (x(Ta) 0.28245) + AL2TA (x(Ta) 0.35) + ALTA (x(Ta) 0.51515) |
| AlTa-90Kat.tdb | 1824.1 | LIQUID (x(Ta) 0.23905) + AL3TA_D022 (x(Ta) 0.25) + AL2TA (x(Ta) 0.35) |
| AlTa-90Kat.tdb | 1824.1 | LIQUID (x(Ta) 0.23901) + AL3TA_D022 (x(Ta) 0.25) + AL2TA (x(Ta) 0.35) |
| AlTa-90Kat.tdb | 933.88 | LIQUID (x(Ta) 3.000e-5) + FCC_A1 (x(Ta) 6.300e-4) + AL3TA_D022 (x(Ta) 0.25) |
| AlTa-96Du-LB.tdb | 2334.16 | LIQUID (x(Ta) 0.63687) + SIGMA_D8B (x(Ta) 0.75611) + BCC_A2 (x(Ta) 0.91897) |
| AlTa-96Du-LB.tdb | 1820.86 | AL3TA_D022 (x(Ta) 0.25) + AL69TA39 (x(Ta) 0.36111) + LIQUID (x(Ta) 0.36665) |
| AlTa-96Du-LB.tdb | 1820.86 | AL3TA_D022 (x(Ta) 0.25) + AL69TA39 (x(Ta) 0.36111) + LIQUID (x(Ta) 0.36662) |
| AlTa-96Du-LB.tdb | 1820.86 | AL3TA_D022 (x(Ta) 0.25) + AL69TA39 (x(Ta) 0.36111) + LIQUID (x(Ta) 0.36658) |
| AlTa-96Du-LB.tdb | 1772.49 | AL69TA39 (x(Ta) 0.36111) + LIQUID (x(Ta) 0.45083) + SIGMA_D8B (x(Ta) 0.65052) |
| AlTa-96Du-LB.tdb | 1772.49 | AL69TA39 (x(Ta) 0.36111) + LIQUID (x(Ta) 0.45086) + SIGMA_D8B (x(Ta) 0.65053) |
| AlTa-96Du-LB.tdb | 1718.94 | AL69TA39 (x(Ta) 0.36111) + ALTA (x(Ta) 0.5) + SIGMA_D8B (x(Ta) 0.65387) |
| AlTa-96Du-LB.tdb | 1718.94 | AL69TA39 (x(Ta) 0.36111) + ALTA (x(Ta) 0.5) + SIGMA_D8B (x(Ta) 0.65389) |
| AlTa-96Du-LB.tdb | 1618.38 | AL69TA39 (x(Ta) 0.36111) + AL7TA5 (x(Ta) 0.41667) + ALTA (x(Ta) 0.5) |
| AlTa-96Du-LB.tdb | 1498.65 | AL69TA39 (x(Ta) 0.36111) + AL3TA2 (x(Ta) 0.4) + AL7TA5 (x(Ta) 0.41667) |
| AlTa-96Du-LB.tdb | 1456.11 | AL3TA_D022 (x(Ta) 0.25) + AL69TA39 (x(Ta) 0.36111) + AL3TA2 (x(Ta) 0.4) |
| AlTa-96Du-LB.tdb | 935.02 | LIQUID (x(Ta) 2.500e-4) + FCC_A1 (x(Ta) 0.00252) + AL3TA_D022 (x(Ta) 0.25) |
| AlTa-96Du-LB.tdb | 935.02 | LIQUID (x(Ta) 2.400e-4) + FCC_A1 (x(Ta) 0.00247) + AL3TA_D022 (x(Ta) 0.25) |
| AlTa-98Sau.tdb | 2270.42 | LIQUID (x(Ta) 0.64336) + SIGMA_D8B (x(Ta) 0.72071) + BCC_A2 (x(Ta) 0.87743) |
| AlTa-98Sau.tdb | 1826.61 | AL3TA_D022 (x(Ta) 0.25) + LIQUID (x(Ta) 0.36615) + AL3TA2_H (x(Ta) 0.4) |
| AlTa-98Sau.tdb | 1826.61 | AL3TA_D022 (x(Ta) 0.25) + LIQUID (x(Ta) 0.36603) + AL3TA2_H (x(Ta) 0.4) |
| AlTa-98Sau.tdb | 1826.61 | AL3TA_D022 (x(Ta) 0.25) + LIQUID (x(Ta) 0.36578) + AL3TA2_H (x(Ta) 0.4) |
| AlTa-98Sau.tdb | 1819.76 | AL3TA2_H (x(Ta) 0.4) + LIQUID (x(Ta) 0.44412) + SIGMA_D8B (x(Ta) 0.57586) |
| AlTa-98Sau.tdb | 1819.76 | AL3TA2_H (x(Ta) 0.4) + LIQUID (x(Ta) 0.44418) + SIGMA_D8B (x(Ta) 0.57593) |
| AlTa-98Sau.tdb | 1498.13 | AL3TA2_L (x(Ta) 0.4) + AL3TA2_H (x(Ta) 0.4) + SIGMA_D8B (x(Ta) 0.57453) |
| AlTa-98Sau.tdb | 1498.13 | AL3TA_D022 (x(Ta) 0.25) + AL3TA2_L (x(Ta) 0.4) + AL3TA2_H (x(Ta) 0.4) |
| AlTa-98Sau.tdb | 1498.13 | AL3TA2_H (x(Ta) 0.4) + AL3TA2_L (x(Ta) 0.4) + SIGMA_D8B (x(Ta) 0.57453) |
| AlTa-98Sau.tdb | 934.02 | LIQUID (x(Ta) 7.000e-5) + FCC_A1 (x(Ta) 8.700e-4) + AL3TA_D022 (x(Ta) 0.25) |
Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AlTa-90Kat · CALPHAD hull AlTa-96Du-LB · CALPHAD hull AlTa-98Sau
Invariant reactions (literature)
| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|
| 2373 | peritectic: L + β -> σ | experimental | [1] Witusiewicz 2010 cites Wilhelm 1962 | Table 4, p. 10, row 1 report | ||
| 2373 | peritectic: Liquid + bcc (Ta) <-> σAlTa2 | σAlTa2: Al 0.333333, Ta 0.666667 | experimental | [2] Du 1996 cites ref. 62Wil | Table 6, p. 7, row 1 report | |
| 2353 | peritectic: Liquid + bcc (Ta) <-> σAlTa2 | Liquid: Ta 0.625; bcc (Ta): Ta 0.93; σAlTa2: Al 0.333333, Ta 0.666667 | experimental | [2] Du 1996 cites ref. 95Mah | Table 6, p. 7, row 3 report | |
| 2353 | peritectic: L + β -> σ | experimental | [1] Witusiewicz 2010 | Table 4, p. 10, row 3 report | ||
| 2347 | peritectic: L + β -> σ | L: Ta 0.678; β: Ta 0.93; σ: Ta 0.759 | model | [1] Witusiewicz 2010 | Table 4, p. 10, row 5 report | |
| 2334 | peritectic: Liquid + bcc (Ta) <-> σAlTa2 | Liquid: Ta 0.637; bcc (Ta): Ta 0.92; σAlTa2: Ta 0.76 | model | [2] Du 1996 | Table 6, p. 7, row 4 report | |
| 2334 | peritectic: L + β -> σ | L: Ta 0.637; β: Ta 0.92; σ: Ta 0.76 | model | [1] Witusiewicz 2010 cites Du 1996 doi | Table 4, p. 10, row 4 report | |
| 2275 | peritectic: L + β -> σ | L: Ta 0.63; β: Ta 0.88; σ: Ta 0.667 | experimental | [1] Witusiewicz 2010 cites Kimura 2006 | Table 4, p. 10, row 2 report | |
| 2275 | peritectic: Liquid + bcc (Ta) <-> σAlTa2 | Liquid: Ta 0.63; bcc (Ta): Ta 0.88; σAlTa2: Ta 0.667 | experimental | [2] Du 1996 cites ref. 73Kim | Table 6, p. 7, row 2 report | |
| 2270.4 | peritectic: Liquid + bcc-A2 -> σ | Liquid: Ta 0.643; bcc-A2: Ta 0.877; σ: Ta 0.72 | model | [3] (ed.) 1998 | Table I, p. 103, row 4 report | |
| 1901 | congruent melting: Al3Ta* -> Liquid | Al3Ta*: Ta 0.25; Liquid: Ta 0.25 | model | [3] (ed.) 1998 | Table I, p. 103, row 5 report | |
| 1900 | congruent melting: Liquid <-> Al3Ta | Liquid: Ta 0.25; Al3Ta: Ta 0.25 | experimental | [2] Du 1996 cites ref. 85Sch | Table 6, p. 7, row 22 report | |
| 1888 | congruent melting: Liquid <-> Al3Ta | Liquid: Ta 0.25; Al3Ta: Ta 0.25 | experimental | [2] Du 1996 cites ref. 96Sch | Table 6, p. 7, row 24 report | |
| 1885 | peritectic: L + σ -> Ta39Al69 | L: Ta 0.327; σ: Ta 0.51; Ta39Al69: Ta 0.378 | model | [1] Witusiewicz 2010 | Table 4, p. 10, row 7 report | |
| 1883 | peritectic: L + σ -> Ta39Al69 | σ: Ta 0.512; Ta39Al69: Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 4, p. 10, row 6 report | |
| 1881 | congruent melting: Liquid <-> Al3Ta | Liquid: Ta 0.25; Al3Ta: Ta 0.25 | model | [2] Du 1996 | Table 6, p. 7, row 25 report | |
| 1865 | congruent melting: Liquid <-> Al3Ta | Liquid: Ta 0.25; Al3Ta: Ta 0.25 | experimental | [2] Du 1996 cites ref. 95Mah | Table 6, p. 7, row 23 report | |
| 1854 | congruent transformation: σ -> φ | σ: Ta 0.552; φ: Ta 0.552 | model | [1] Witusiewicz 2010 | Table 4, p. 10, row 8 report | |
| 1840 | peritectic: Liquid + Al3Ta <-> Al69Ta39 | Liquid: Ta 0.39; Al3Ta: Ta 0.25; Al69Ta39: Ta 0.4 | experimental | [2] Du 1996 cites ref. 85Sch | Table 6, p. 7, row 5 report | |
| 1826.8 | eutectic: Liquid -> + AlM-D0*22 + Al3Ta2-II | Liquid: Ta 0.366; AlM-D0*22: Ta 0.25; Al3Ta2-II: Ta 0.4 | model | [3] (ed.) 1998 | Table I, p. 103, row 2 report | |
| 1824 | peritectic | experimental | [1] Witusiewicz 2010 cites Subramanian 1990 doi | p. 3 report | In the literature there are both variants of melting for the 3-phase, congruent at 1823 [23] or 1900 K [20] and peritectic at 1773 [44] or 1824 K [14]. | |
| 1822 | peritectic: L + Ta39Al69 -> ε | Ta39Al69: Ta 0.359; ε: Ta 0.249 | experimental | [1] Witusiewicz 2010 | Table 4, p. 10, row 9 report | |
| 1821 | peritectic: Liquid + Al3Ta <-> Al69Ta39 | Liquid: Ta 0.37; Al3Ta: Ta 0.25; Al69Ta39: Ta 0.361 | model | [2] Du 1996 | Table 6, p. 7, row 7 report | |
| 1820 | eutectic: Liquid <-> Al69Ta39 + AlTa2 | Liquid: Ta 0.43; Al69Ta39: Ta 0.4; AlTa2: Al 0.333333, Ta 0.666667 | experimental | [2] Du 1996 cites ref. 85Sch | Table 6, p. 7, row 9 report | |
| 1819.8 | eutectic: Liquid -> Al3Ta2-H -> + σ | Liquid: Ta 0.444; Al3Ta2-H: Ta 0.4; σ: Ta 0.576 | model | [3] (ed.) 1998 | Table I, p. 103, row 3 report | |
| 1814 | peritectic: L + Ta39Al69 -> ε | L: Ta 0.237; Ta39Al69: Ta 0.355; ε: Ta 0.244 | model | [1] Witusiewicz 2010 | Table 4, p. 10, row 10 report | |
| 1812 | peritectic: Liquid + Al3Ta <-> Al69Ta39 | Liquid: Ta 0.42; Al3Ta: Ta 0.25; Al69Ta39: Ta 0.361 | experimental | [2] Du 1996 cites ref. 95Mah | Table 6, p. 7, row 6 report | |
| 1776 | eutectic: Liquid <-> Al69Ta39 + AlTa2 | Liquid: Ta 0.45; Al69Ta39: Ta 0.361; AlTa2: Ta 0.64 | experimental | [2] Du 1996 cites ref. 95Mah | Table 6, p. 7, row 10 report | |
| 1773 | eutectic: Liquid <-> Al69Ta39 + AlTa2 | Liquid: Ta 0.42; Al69Ta39: Ta 0.25; AlTa2: Ta 0.667 | experimental | [2] Du 1996 cites ref. 73Kim | Table 6, p. 7, row 8 report | |
| 1772 | eutectic: Liquid <-> Al69Ta39 + AlTa2 | Liquid: Ta 0.45; Al69Ta39: Ta 0.361; AlTa2: Ta 0.65 | model | [2] Du 1996 | Table 6, p. 7, row 11 report | |
| 1737 | eutectoid: σ -> Ta39Al69 + φ | σ: Ta 0.511; Ta39Al69: Ta 0.376; φ: Ta 0.522 | model | [1] Witusiewicz 2010 | Table 4, p. 10, row 12 report | |
| 1733 | eutectoid: σ -> Ta39Al69 + φ | σ: Ta 0.51; Ta39Al69: Ta 0.361; φ: Al 0.44186, Ta 0.55814 | experimental | [1] Witusiewicz 2010 | Table 4, p. 10, row 11 report | |
| 1720 | peritectoid: Al69Ta39 + AlTa2 <-> AlTa | Al69Ta39: Ta 0.361; AlTa2: Ta 0.65; AlTa: Ta 0.5 | experimental | [2] Du 1996 cites ref. 95Mah | Table 6, p. 7, row 12 report | |
| 1719 | peritectoid: Al69Ta39 + AlTa2 <-> AlTa | Al69Ta39: Ta 0.361; AlTa2: Ta 0.65; AlTa: Ta 0.5 | model | [2] Du 1996 | Table 6, p. 7, row 13 report | |
| 1620 | peritectoid: Al69Ta39 + AlTa <-> Al7Ta5 | Al69Ta39: Ta 0.361; AlTa: Ta 0.5; Al7Ta5: Ta 0.416 | experimental | [2] Du 1996 cites ref. 95Mah | Table 6, p. 7, row 14 report | |
| 1618 | peritectoid: Al69Ta39 + AlTa <-> Al7Ta5 | Al69Ta39: Ta 0.361; AlTa: Ta 0.5; Al7Ta5: Ta 0.416 | model | [2] Du 1996 | Table 6, p. 7, row 15 report | |
| 1500 | peritectoid: Al69Ta39 + Al7Ta5 <-> Al3Ta2 | Al69Ta39: Ta 0.361; Al7Ta5: Ta 0.416; Al3Ta2: Ta 0.4 | experimental | [2] Du 1996 cites ref. 95Mah | Table 6, p. 7, row 16 report | |
| 1499 | peritectoid: Al69Ta39 + Al7Ta5 <-> Al3Ta2 | Al69Ta39: Ta 0.361; Al7Ta5: Ta 0.416; Al3Ta2: Ta 0.4 | model | [2] Du 1996 | Table 6, p. 7, row 17 report | |
| 1498.1 | polymorphic: Al3Ta2-H -> Al3Ta2-II | Al3Ta2-H: Ta 0.4; Al3Ta2-II: Ta 0.4 | model | [3] (ed.) 1998 | Table I, p. 103, row 6 report | |
| 1456 | eutectoid: Al69Ta39 <-> Al3Ta + Al3Ta2 | Al69Ta39: Ta 0.361; Al3Ta: Ta 0.25; Al3Ta2: Ta 0.4 | model | [2] Du 1996 | Table 6, p. 7, row 19 report | |
| 1450 | eutectoid: Al69Ta39 <-> Al3Ta + Al3Ta2 | Al69Ta39: Ta 0.361; Al3Ta: Ta 0.25; Al3Ta2: Ta 0.4 | experimental | [2] Du 1996 cites ref. 95Mah | Table 6, p. 7, row 18 report | |
| 1371 | eutectoid: Ta39Al69 -> ε + φ | Ta39Al69: Ta 0.368; ε: Ta 0.25; φ: Ta 0.524 | model | [1] Witusiewicz 2010 | Table 4, p. 10, row 14 report | |
| 1367 | eutectoid: Ta39Al69 -> ε + φ | Ta39Al69: Ta 0.356; ε: Ta 0.251; φ: Ta 0.512 | experimental | [1] Witusiewicz 2010 | Table 4, p. 10, row 13 report | |
| 941 | peritectic: L + ε -> (αAl) | L: Ta 2.000e-4; ε: Ta 0.25; (αAl): Ta 3.700e-4 | experimental | [1] Witusiewicz 2010 cites Glazov 1956 | Table 4, p. 10, row 15 report | |
| 941 | peritectic: Liquid + Al3Ta <-> fcc (Al) | Liquid: Ta 2.200e-4; Al3Ta: Ta 0.25; fcc (Al): Ta 3.700e-4 | experimental | [2] Du 1996 cites ref. 56Gla | Table 6, p. 7, row 20 report | |
| 935 | peritectic: Liquid + Al3Ta <-> fcc (Al) | Liquid: Ta 2.500e-4; Al3Ta: Ta 0.25; fcc (Al): Ta 0.0045 | model | [2] Du 1996 | Table 6, p. 7, row 21 report | |
| 935 | peritectic: L + ε -> (αAl) | L: Ta 2.500e-4; ε: Ta 0.25; (αAl): Ta 0.0045 | model | [1] Witusiewicz 2010 cites Du 1996 doi | Table 4, p. 10, row 19 report | |
| 934 | peritectic: Liquid + AlM-D0*22 -> fcc-Al | Liquid: Ta 1.000e-5; AlM-D0*22: Ta 0.25; fcc-Al: Ta 8.000e-4 | model | [3] (ed.) 1998 | Table I, p. 103, row 1 report | |
| 933.8 | peritectic: L + ε -> (αAl) | experimental | [1] Witusiewicz 2010 | Table 4, p. 10, row 18 report | ||
| 933.7 | peritectic: L + ε -> (αAl) | L: Ta 3.800e-5; ε: Ta 0.247; (αAl): Ta 3.800e-4 | model | [1] Witusiewicz 2010 | Table 4, p. 10, row 20 report |
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.
| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---|---|---|---|---|---|---|---|
| Ta39Al69 | Al23Ta13 | -25.9 kJ/mol-atom | 298.15 | model | -23.899 (mp-aaacrhpr) | [1] Witusiewicz 2010 | Table 5, p. 11, row 2 report | ||
| ε | -29.954 kJ/mol-atom | 298.15 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 1 report | ||||
| σ | -24.788 kJ/mol-atom | 298.15 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 4 report | ||||
| σ | -23.622 kJ/mol-atom | 298.15 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 5 report | ||||
| σ | -22.394 kJ/mol-atom | 298.15 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 6 report | ||||
| σ | -22.05 kJ/mol-atom | 298.15 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 7 report | ||||
| σ | -19.867 kJ/mol-atom | 298.15 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 8 report | ||||
| σ | -16.556 kJ/mol-atom | 298.15 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 9 report | ||||
| σ | -13.246 kJ/mol-atom | 298.15 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 10 report | ||||
| φ | -24.654 kJ/mol-atom | 298.15 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 3 report |
Other properties
Phase transition (67)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Phase transition | 924 K | 924 | (αAl) + ε ↔ L + ε alloy: Al 0.795, Ta 0.205 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 3 report | |
| Phase transition | 933 K | 933 | (αAl) + ε ↔ L + ε alloy: Al 0.795, Ta 0.205 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 1 report | |
| Phase transition | 933.7 K | 933.7 | (αAl) + ε ↔ L + ε alloy: Al 0.795, Ta 0.205 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 4 report | |
| Phase transition | 933.8 K | 933.8 | (αAl) + ε ↔ L + ε alloy: Al 0.795, Ta 0.205 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 2 report | |
| Phase transition | 1353 K | 1353 | ε + φ ↔ Ta39Al69 + φ alloy: Al 0.559, Ta 0.441 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 30 report | |
| Phase transition | 1355 K | 1355 | ε + φ ↔ Ta39Al69 + φ alloy: Al 0.543, Ta 0.457 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 41 report | |
| Phase transition | 1371 K | 1371 | ε + φ ↔ Ta39Al69 + ε alloy: Al 0.692, Ta 0.308 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 9 report | |
| Phase transition | 1371 K | 1371 | ε + φ ↔ Ta39Al69 + φ alloy: Al 0.624, Ta 0.376 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 17 report | |
| Phase transition | 1371 K | 1371 | ε + φ ↔ Ta39Al69 + φ alloy: Al 0.559, Ta 0.441 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 31 report | |
| Phase transition | 1371 K | 1371 | ε + φ ↔ Ta39Al69 + φ alloy: Al 0.543, Ta 0.457 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 42 report | |
| Phase transition | 1372 K | 1372 | ε + φ ↔ Ta39Al69 + ε alloy: Al 0.692, Ta 0.308 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 8 report | |
| Phase transition | 1387 K | 1387 | ε + φ ↔ Ta39Al69 + φ alloy: Al 0.624, Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 16 report | |
| Phase transition | 1498 K | 1498 | polymorphic | experimental | [1] Witusiewicz 2010 cites Schuster 1985 | p. 3 report | Besides, Schuster [20] reported a polymorphism for the Ta39Al69-phase and a corresponding DTA arrest at 1498 K upon heating, which is not in sharp disagreement with the decomposition temperature in the interval 1273-1423 K. |
| Phase transition | 1662 K | 1662 | Ta39Al69 + φ ↔ Ta39Al69 + σ alloy: Al 0.543, Ta 0.457 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 44 report | |
| Phase transition | 1716 K | 1716 | φ + σ ↔ σ alloy: Al 0.416, Ta 0.584 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 53 report | |
| Phase transition | 1725 K | 1725 | φ + σ ↔ σ alloy: Al 0.416, Ta 0.584 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 52 report | |
| Phase transition | 1727 K | 1727 | Ta39Al69 + φ ↔ Ta39Al69 + σ alloy: Al 0.543, Ta 0.457 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 43 report | |
| Phase transition | 1737 K | 1737 | Ta39Al69 + φ ↔ Ta39Al69 + σ alloy: Al 0.624, Ta 0.376 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 18 report | |
| Phase transition | 1737 K | 1737 | Ta39Al69 + φ ↔ Ta39Al69 + σ alloy: Al 0.543, Ta 0.457 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 45 report | |
| Phase transition | 1737 K | 1737 | Ta39Al69 + φ ↔ Ta39Al69 + σ alloy: Al 0.559, Ta 0.441 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 33 report | |
| Phase transition | 1740 K | 1740 | Ta39Al69 + φ ↔ Ta39Al69 + σ alloy: Al 0.559, Ta 0.441 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 32 report | |
| Phase transition | 1759 K | 1759 | Ta39Al69 + σ ↔ Ta39Al69 alloy: Al 0.624, Ta 0.376 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 20 report | |
| Phase transition | 1804 K | 1804 | L + ε ↔ L alloy: Al 0.795, Ta 0.205 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 6 report | |
| Phase transition | 1806 K | 1806 | Ta39Al69 + ε ↔ L + Ta39Al69 alloy: Al 0.692, Ta 0.308 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 11 report | |
| Phase transition | 1810 K | 1810 | L + ε ↔ L alloy: Al 0.795, Ta 0.205 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 7 report | |
| Phase transition | 1814 K | 1814 | Ta39Al69 + ε ↔ L + Ta39Al69 alloy: Al 0.692, Ta 0.308 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 12 report | |
| Phase transition | 1820 K | 1820 | Ta39Al69 + σ ↔ Ta39Al69 alloy: Al 0.624, Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 19 report | |
| Phase transition | 1822 K | 1822 | Ta39Al69 + ε ↔ L + Ta39Al69 alloy: Al 0.692, Ta 0.308 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 10 report | |
| Phase transition | 1840 K | 1840 | peritectic: Al3Ta2 alloy: Ta 0.4 | unspecified | [2] Du 1996 cites ref. 85Sch | Table I, p. 2, row 38 report | |
| Phase transition | 1848 K | 1848 (<) | L + ε ↔ L alloy: Al 0.795, Ta 0.205 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 5 report | |
| Phase transition | 1855 K | 1855 | Ta39Al69 + σ ↔ L + σ alloy: Al 0.543, Ta 0.457 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 47 report | |
| Phase transition | 1855 K | 1855 | Ta39Al69 ↔ L + Ta39Al69 alloy: Al 0.624, Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 23 report | |
| Phase transition | 1862 K | 1862 | Ta39Al69 + σ ↔ L + σ alloy: Al 0.559, Ta 0.441 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 36 report | |
| Phase transition | 1874 K | 1874 | L + Ta39Al69 ↔ L alloy: Al 0.692, Ta 0.308 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 15 report | |
| Phase transition | 1876 K | 1876 | L + Ta39Al69 ↔ L alloy: Al 0.692, Ta 0.308 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 13 report | |
| Phase transition | 1876 K | 1876 | Ta39Al69 + σ ↔ L + σ alloy: Al 0.543, Ta 0.457 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 46 report | |
| Phase transition | 1877 K | 1877 | Ta39Al69 ↔ L + Ta39Al69 alloy: Al 0.624, Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 21 report | |
| Phase transition | 1879 K | 1879 | L + Ta39Al69 ↔ L alloy: Al 0.692, Ta 0.308 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 14 report | |
| Phase transition | 1881 K | 1881 | Ta39Al69 ↔ L + Ta39Al69 alloy: Al 0.624, Ta 0.376 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 24 report | |
| Phase transition | 1881 K | 1881 | Ta39Al69 ↔ L + Ta39Al69 alloy: Al 0.624, Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 22 report | |
| Phase transition | 1884 K | 1884 | L + Ta39Al69 ↔ L + σ alloy: Al 0.624, Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 25 report | |
| Phase transition | 1885 K | 1885 | L + Ta39Al69 ↔ L + σ alloy: Al 0.624, Ta 0.376 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 26 report | |
| Phase transition | 1885 K | 1885 | Ta39Al69 + σ ↔ L + σ alloy: Al 0.543, Ta 0.457 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 48 report | |
| Phase transition | 1885 K | 1885 | Ta39Al69 + σ ↔ L + σ alloy: Al 0.559, Ta 0.441 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 34 report | |
| Phase transition | 1885 K | 1885 | Ta39Al69 + σ ↔ L + σ alloy: Al 0.559, Ta 0.441 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 37 report | |
| Phase transition | 1895 K | 1895 | Ta39Al69 + σ ↔ L + σ alloy: Al 0.559, Ta 0.441 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 35 report | |
| Phase transition | 1900 K | 1900 | congruent transformation | experimental | [1] Witusiewicz 2010 cites Schuster 1985 | p. 3 report | In the literature there are both variants of melting for the 3-phase, congruent at 1823 [23] or 1900 K [20] and peritectic at 1773 [44] or 1824 K [14]. |
| Phase transition | 1972 K | 1972 | L + σ ↔ L alloy: Al 0.624, Ta 0.376 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 29 report | |
| Phase transition | 1973 K | 1973 (>) | Al3Ta alloy: Ta 0.25 | unspecified | [2] Du 1996 cites ref. 65Bea | Table I, p. 2, row 36 report | |
| Phase transition | 1978 K | 1978 | L + σ ↔ L alloy: Al 0.624, Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 27 report | |
| Phase transition | 2002 K | 2002 | L + σ ↔ L alloy: Al 0.624, Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 28 report | |
| Phase transition | 2063 K | 2063 | L + σ ↔ L alloy: Al 0.559, Ta 0.441 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 39 report | |
| Phase transition | 2063 K | 2063 | σ ↔ L + σ alloy: Al 0.416, Ta 0.584 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 55 report | |
| Phase transition | 2064 K | 2064 | L + σ ↔ L alloy: Al 0.559, Ta 0.441 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 38 report | |
| Phase transition | 2074 K | 2074 | L + σ ↔ L alloy: Al 0.559, Ta 0.441 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 40 report | |
| Phase transition | 2097 K | 2097 | L + σ ↔ L alloy: Al 0.543, Ta 0.457 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 51 report | |
| Phase transition | 2099 K | 2099 | σ ↔ L + σ alloy: Al 0.416, Ta 0.584 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 56 report | |
| Phase transition | 2111 K | 2111 | σ ↔ L + σ alloy: Al 0.416, Ta 0.584 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 54 report | |
| Phase transition | 2139 K | 2139 | L + σ ↔ L alloy: Al 0.543, Ta 0.457 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 49 report | |
| Phase transition | 2159 K | 2159 | L + σ ↔ L alloy: Al 0.543, Ta 0.457 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 50 report | |
| Phase transition | 2164 K | 2164 | L + σ ↔ L alloy: Al 0.416, Ta 0.584 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 58 report | |
| Phase transition | 2251 K | 2251 | L + σ ↔ L alloy: Al 0.416, Ta 0.584 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 59 report | |
| Phase transition | 2257 K | 2257 | L + σ ↔ L alloy: Al 0.416, Ta 0.584 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 57 report | |
| Phase transition | 2347 K | 2347 | β + σ ↔ L + β alloy: Al 0.12, Ta 0.88 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 61 report | |
| Phase transition | 2353 K | 2353 | peritectic: AlTa2 alloy: Ta 0.666667 | unspecified | [2] Du 1996 cites ref. 95Mah | Table I, p. 2, row 43 report | |
| Phase transition | 2353 K | 2353 | β + σ ↔ L + β alloy: Al 0.12, Ta 0.88 | experimental | [1] Witusiewicz 2010 | Table 3, p. 7, row 60 report | |
| Phase transition | 2980 K | 2980 | L + β ↔ L alloy: Al 0.12, Ta 0.88 | unspecified | [1] Witusiewicz 2010 | Table 3, p. 7, row 62 report |
Phase equilibrium (24)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Phase assemblage | (αAl) + ε alloy: Al 0.795, Ta 0.205 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 1 report | |||
| Phase assemblage | Ta39Al69 + σ alloy: Al 0.55, Ta 0.45 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 15 report | |||
| Phase assemblage | Ta39Al69 + σ alloy: Al 0.61, Ta 0.39 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 14 report | |||
| Phase assemblage | Ta39Al69 + σ alloy: Al 0.535, Ta 0.465 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 16 report | |||
| Phase assemblage | ε + Ta39Al69 alloy: Al 0.67, Ta 0.33 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 13 report | |||
| Phase assemblage | σ alloy: Al 0.415, Ta 0.585 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 17 report | |||
| Phase assemblage | 933 | (aAl) alloy: Ta 0.205 | experimental | [1] Witusiewicz 2010 | p. 8 report | As shown in Fig. 6 the sample with 20.5 at.% Ta starts to melt at 933 K that is related to the (aAl) phase. | |
| Phase assemblage | 1273 | 3 + 4 alloy: Ta 0.304 | experimental | [1] Witusiewicz 2010 cites Chou 2006 doi | p. 3 report | In [5] the same phase constituents were identified by EPMA in the samples Al-30.4 at.% Ta and Al-40.3 at.% Ta after annealing at 1273 and 1173 K for 35 days (840 h). | |
| Phase assemblage | 1273 | 3 + 4 alloy: Ta 0.403 | experimental | [1] Witusiewicz 2010 cites Chou 2006 doi | p. 3 report | In [5] the same phase constituents were identified by EPMA in the samples Al-30.4 at.% Ta and Al-40.3 at.% Ta after annealing at 1273 and 1173 K for 35 days (840 h). | |
| Phase assemblage | 1373 | ε + Ta39Al69 + φ alloy: Al 0.543, Ta 0.457 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 8 report | ||
| Phase assemblage | 1423 | s alloy: Ta 0.601 | experimental | [1] Witusiewicz 2010 cites Subramanian 1990 doi | p. 3 report | In [19] the sample Al-64.2 at.% Ta annealed at w1510 K was shown in the two-phase field f þ s, while in [14] the alloy Al60.1 at.% Ta was single-phase s after annealing at both 1423 and 1673 K for 500 and 100 h, respectively. | |
| Phase assemblage | 1473 | Ta39Al69 alloy: Al 0.624, Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 5 report | ||
| Phase assemblage | 1473 | ε + Ta39Al69 alloy: Al 0.692, Ta 0.308 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 3 report | ||
| Phase assemblage | 1473 | φ + σ alloy: Al 0.416, Ta 0.584 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 10 report | ||
| Phase assemblage | 1510 | f + s alloy: Ta 0.642 | experimental | [1] Witusiewicz 2010 cites Mahne 1995 doi | p. 3 report | In [19] the sample Al-64.2 at.% Ta annealed at w1510 K was shown in the two-phase field f þ s, while in [14] the alloy Al60.1 at.% Ta was single-phase s after annealing at both 1423 and 1673 K for 500 and 100 h, respectively. | |
| Phase assemblage | 1673 | s alloy: Ta 0.601 | experimental | [1] Witusiewicz 2010 cites Subramanian 1990 doi | p. 3 report | In [19] the sample Al-64.2 at.% Ta annealed at w1510 K was shown in the two-phase field f þ s, while in [14] the alloy Al60.1 at.% Ta was single-phase s after annealing at both 1423 and 1673 K for 500 and 100 h, respectively. | |
| Phase assemblage | 1773 | ε + Ta39Al69 alloy: Al 0.692, Ta 0.308 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 2 report | ||
| Phase assemblage | 1833 | Ta39Al69 + σ alloy: Al 0.559, Ta 0.441 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 6 report | ||
| Phase assemblage | 1833 | Ta39Al69 + σ alloy: Al 0.624, Ta 0.376 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 4 report | ||
| Phase assemblage | 1833 | Ta39Al69 + σ alloy: Al 0.543, Ta 0.457 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 7 report | ||
| Phase assemblage | 2023 | σ alloy: Al 0.416, Ta 0.584 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 9 report | ||
| Phase assemblage | 2273 | σ + β alloy: Ta 1 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 19 report | ||
| Phase assemblage | 2273 | σ + β alloy: Al 0.12, Ta 0.88 | experimental | [1] Witusiewicz 2010 | Table 2, p. 4, row 11 report | ||
| Phase composition | 1823 | congruent melting: Al3Ta liquid: Ta 0.25; Al3Ta: Ta 0.25 | unspecified | [2] Du 1996 cites ref. 73Kim | Table I, p. 2, row 37 report |
Heat capacity / entropy / enthalpy (12)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Entropy printed: entropy at constant volume | 95.4 J K 1 mol 1 | 298.15 | DFT | [4] Gebauer 2022 cites Online | p. 6 report | The entropy at constant volume of AlTaO4 is available in an online database for ab initio phonon calculations[36] and is 95.4 J K1 mol1 at 25 °C. | |
| Entropy printed: entropy at constant pressure | 95 J K 1 mol 1 | 298.15 | model | [4] Gebauer 2022 | p. 6 report | The entropy at constant pressure calculated from our dataset is 95.0 J K1 mol1 at 25 °C. | |
| Entropy printed: Δ298S | -3.506 J K^-1 mol^-1 per mol-atom | 298.15 | Ta39Al69 alloy: Ta 0.361111 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 2 report | |
| Entropy printed: Δ298S | -5.688 J K^-1 mol^-1 per mol-atom | 298.15 | ε | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 1 report | |
| Entropy printed: Δ298S | -0.969 J K^-1 mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 10 report | |
| Entropy printed: Δ298S | -2.122 J K^-1 mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 8 report | |
| Entropy printed: Δ298S | -2.58 J K^-1 mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 6 report | |
| Entropy printed: Δ298S | -2.611 J K^-1 mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 4 report | |
| Entropy printed: Δ298S | -2.542 J K^-1 mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 5 report | |
| Entropy printed: Δ298S | -1.37 J K^-1 mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 9 report | |
| Entropy printed: Δ298S | -3.071 J K^-1 mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 7 report | |
| Entropy printed: Δ298S | -2.515 J K^-1 mol^-1 per mol-atom | 298.15 | φ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 3 report |
Activity / EMF / Gibbs energy (10)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Gibbs energy printed: Δ298G | -24850 J mol^-1 per mol-atom | 298.15 | Ta39Al69 alloy: Ta 0.361111 | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 2 report | |
| Gibbs energy printed: Δ298G | -27986 J mol^-1 per mol-atom | 298.15 | ε | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 1 report | |
| Gibbs energy printed: Δ298G | -12951 J mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 10 report | |
| Gibbs energy printed: Δ298G | -19229 J mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 8 report | |
| Gibbs energy printed: Δ298G | -21619 J mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 6 report | |
| Gibbs energy printed: Δ298G | -24005 J mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 4 report | |
| Gibbs energy printed: Δ298G | -22859 J mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 5 report | |
| Gibbs energy printed: Δ298G | -16142 J mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 9 report | |
| Gibbs energy printed: Δ298G | -21129 J mol^-1 per mol-atom | 298.15 | σ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 7 report | |
| Gibbs energy printed: Δ298G | -23900 J mol^-1 per mol-atom | 298.15 | φ | model | [1] Witusiewicz 2010 | Table 5, p. 11, row 3 report |
Crystal structure (52)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Lattice a | 11.0715 Å | Ta2Al3(ht) alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Schuster 1985 | Table 1, p. 2, row 12 report | ||
| Lattice a | 3.296 Å | β, (Ta), bcc_A2 alloy: Al 0.02, Ta 0.98 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 4 report | ||
| Lattice a | 9.8707 Å ± 1.000e-4 | φ, Ta48Al38 (β) alloy: Ta 0.55814 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 17 report | ||
| Lattice a | 4.0496 Å | 298.15 | (αAl), fcc_A1 alloy: Ta 0 | experimental | [1] Witusiewicz 2010 cites 3 vols 1990 | Table 1, p. 2, row 1 report | |
| Lattice a | 4.053 Å | 298.15 | (αAl), fcc_A1 alloy: Al 0.99964, Ta 3.600e-4 | experimental | [1] Witusiewicz 2010 cites Glazov 1956 | Table 1, p. 2, row 2 report | |
| Lattice a | 19.315 Å | 298.15 | Ta12Al17 alloy: Ta 0.413793 | experimental | [1] Witusiewicz 2010 cites Raman 1965 | Table 1, p. 2, row 11 report | |
| Lattice a | 9.88 Å | 298.15 | Ta17Al12 alloy: Ta 0.586207 | experimental | [1] Witusiewicz 2010 cites Raman 1965 | Table 1, p. 2, row 19 report | |
| Lattice a | 12.776 Å ± 0.005 | 298.15 | Ta2Al3 alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Girgis 1970 doi | Table 1, p. 2, row 13 report | |
| Lattice a | 15.5614 Å | 298.15 | Ta2Al3(lt) alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Schuster 1985 | Table 1, p. 2, row 15 report | |
| Lattice a | 10.748 Å | 298.15 | Ta2Al3, AluTa u ≈ 1.5 alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Mahne 1995 doi | Table 1, p. 2, row 14 report | |
| Lattice a | 19.172 Å | 298.15 | Ta39Al69 alloy: Ta 0.361111 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 9 report | |
| Lattice a | 19.153 Å ± 0.001 | 298.15 | Ta39Al69 alloy: Ta 0.361111 | experimental | [1] Witusiewicz 2010 cites Mahne 1994 doi | Table 1, p. 2, row 8 report | |
| Lattice a | 32.14 Å ± 0.02 | 298.15 | Ta5Al7, AlvTa v ≈ 1.4 alloy: Ta 0.416667 | experimental | [1] Witusiewicz 2010 cites Mahne 1995 doi | Table 1, p. 2, row 16 report | |
| Lattice a | 14.865 Å ± 0.003 | 298.15 | TaAl alloy: Ta 0.5 | experimental | [1] Witusiewicz 2010 cites Mahne 1993 doi | Table 1, p. 2, row 18 report | |
| Lattice a | 19.157 Å ± 0.002 | 298.15 | TaAl2 alloy: Ta 0.333333 | experimental | [1] Witusiewicz 2010 cites Subramanian 1990 doi | Table 1, p. 2, row 10 report | |
| Lattice a | 3.8488 Å | 298.15 | ε, TaAl3 alloy: Ta 0.25 | experimental | [1] Witusiewicz 2010 cites Schuhmacher 1990 | Table 1, p. 2, row 6 report | |
| Lattice a | 3.834 Å | 298.15 | ε, TaAl3 alloy: Ta 0.25 | experimental | [1] Witusiewicz 2010 cites Brauer 1938 doi | Table 1, p. 2, row 5 report | |
| Lattice a | 3.839 Å | 298.15 | ε, TaAl3 alloy: Ta 0.25 | experimental | [1] Witusiewicz 2010 cites Schuster 1985 | Table 1, p. 2, row 7 report | |
| Lattice a | 9.891 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.35, Ta 0.65 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 23 report | |
| Lattice a | 9.942 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.276, Ta 0.724 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 24 report | |
| Lattice a | 10.014 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.24, Ta 0.76 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 26 report | |
| Lattice a | 9.828 Å | 298.15 | σ, Ta2Al alloy: Ta 0.666667 | experimental | [1] Witusiewicz 2010 cites Edshammar 1960 doi | Table 1, p. 2, row 20 report | |
| Lattice a | 9.845 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.39, Ta 0.61 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 22 report | |
| Lattice a | 9.957 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.26, Ta 0.74 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 25 report | |
| Lattice a | 9.842 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.4, Ta 0.6 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 21 report | |
| Lattice b | 6.8717 Å | Ta2Al3(ht) alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Schuster 1985 | Table 1, p. 2, row 12 report | ||
| Lattice b | 9.8766 Å ± 1.000e-4 | φ, Ta48Al38 (β) alloy: Ta 0.55814 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 17 report | ||
| Lattice b | 13.947 Å | 298.15 | Ta2Al3(lt) alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Schuster 1985 | Table 1, p. 2, row 15 report | |
| Lattice b | 11.078 Å | 298.15 | Ta2Al3, AluTa u ≈ 1.5 alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Mahne 1995 doi | Table 1, p. 2, row 14 report | |
| Lattice b | 9.863 Å ± 0.002 | 298.15 | TaAl alloy: Ta 0.5 | experimental | [1] Witusiewicz 2010 cites Mahne 1993 doi | Table 1, p. 2, row 18 report | |
| Lattice c | 4.7945 Å | Ta2Al3(ht) alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Schuster 1985 | Table 1, p. 2, row 12 report | ||
| Lattice c | 16.3539 Å ± 2.000e-4 | φ, Ta48Al38 (β) alloy: Ta 0.55814 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 17 report | ||
| Lattice c | 27.04 Å ± 0.04 | 298.15 | Ta2Al3 alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Girgis 1970 doi | Table 1, p. 2, row 13 report | |
| Lattice c | 12.6628 Å | 298.15 | Ta2Al3(lt) alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Schuster 1985 | Table 1, p. 2, row 15 report | |
| Lattice c | 10.433 Å | 298.15 | Ta2Al3, AluTa u ≈ 1.5 alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Mahne 1995 doi | Table 1, p. 2, row 14 report | |
| Lattice c | 13.41 Å ± 0.01 | 298.15 | Ta5Al7, AlvTa v ≈ 1.4 alloy: Ta 0.416667 | experimental | [1] Witusiewicz 2010 cites Mahne 1995 doi | Table 1, p. 2, row 16 report | |
| Lattice c | 9.862 Å ± 0.002 | 298.15 | TaAl alloy: Ta 0.5 | experimental | [1] Witusiewicz 2010 cites Mahne 1993 doi | Table 1, p. 2, row 18 report | |
| Lattice c | 8.5982 Å | 298.15 | ε, TaAl3 alloy: Ta 0.25 | experimental | [1] Witusiewicz 2010 cites Schuhmacher 1990 | Table 1, p. 2, row 6 report | |
| Lattice c | 8.536 Å | 298.15 | ε, TaAl3 alloy: Ta 0.25 | experimental | [1] Witusiewicz 2010 cites Brauer 1938 doi | Table 1, p. 2, row 5 report | |
| Lattice c | 8.535 Å | 298.15 | ε, TaAl3 alloy: Ta 0.25 | experimental | [1] Witusiewicz 2010 cites Schuster 1985 | Table 1, p. 2, row 7 report | |
| Lattice c | 5.198 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.35, Ta 0.65 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 23 report | |
| Lattice c | 5.198 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.276, Ta 0.724 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 24 report | |
| Lattice c | 5.211 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.24, Ta 0.76 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 26 report | |
| Lattice c | 5.232 Å | 298.15 | σ, Ta2Al alloy: Ta 0.666667 | experimental | [1] Witusiewicz 2010 cites Edshammar 1960 doi | Table 1, p. 2, row 20 report | |
| Lattice c | 5.217 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.39, Ta 0.61 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 22 report | |
| Lattice c | 5.199 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.26, Ta 0.74 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 25 report | |
| Lattice c | 5.217 Å ± 0.001 | 298.15 | σ, Ta2Al alloy: Al 0.4, Ta 0.6 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 21 report | |
| lattice alpha | 90.45 ° | 298.15 | Ta2Al3, AluTa u ≈ 1.5 alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Mahne 1995 doi | Table 1, p. 2, row 14 report | |
| lattice beta | 116.478 ° ± 0.001 | φ, Ta48Al38 (β) alloy: Ta 0.55814 | experimental | [1] Witusiewicz 2010 cites Boulineau doi | Table 1, p. 2, row 17 report | ||
| lattice beta | 97.6 ° | 298.15 | Ta2Al3, AluTa u ≈ 1.5 alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Mahne 1995 doi | Table 1, p. 2, row 14 report | |
| lattice beta | 99.98 ° ± 0.02 | 298.15 | TaAl alloy: Ta 0.5 | experimental | [1] Witusiewicz 2010 cites Mahne 1993 doi | Table 1, p. 2, row 18 report | |
| lattice gamma | 63.19 ° | 298.15 | Ta2Al3, AluTa u ≈ 1.5 alloy: Ta 0.4 | experimental | [1] Witusiewicz 2010 cites Mahne 1995 doi | Table 1, p. 2, row 14 report |
Sources
Reporting papers the values were read from (a value cited from another work names that work in its row).
- V.T. Witusiewicz, A.A. Bondar, U. Hecht, J. Zollinger, V.M. Petyukh, O.S. Fomichov et al., Experimental study and thermodynamic re-assessment of the binary Al–Ta system, Intermetallics 18, 92-106 (2010). doi:10.1016/j.intermet.2009.06.015
- Y. Du, R. Schmid-Fetzer, Thermodynamic modeling of the Al-Ta system, JPE 17, 311-324 (1996). doi:10.1007/bf02665557
- I. Ansara, A. T. Dinsdale, M. H. Rand (eds.), COST 507: Thermochemical database for light metal alloys, Volume 2, EUR 18499 EN, Office for Official Publications of the European Communities, Luxembourg (1998), ISBN 92-828-3902-8.
- Julian Gebauer, Peter Franke, Hans Jürgen Seifert, Thermodynamic Evaluation of the system Ta–O and Preliminary Assessment of the Systems Al–Nb–O and Al–Ta–O, Adv Eng Mater 24 (2022). doi:10.1002/adem.202200162