Cr–Ga system
61 accepted literature values from 2 paper(s) (experimental 26, model 35); 2 calculated phase diagram(s). 4 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 (10) · papers (bibliography) · Markdown
| Evidence class | Values |
|---|---|
| experimental | 26 |
| model | 35 |
| Property group | Values |
|---|---|
| invariant reaction | 12 |
| formation | 46 |
| heat capacity / entropy / enthalpy | 3 |
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 |
|---|---|---|---|
| CrGa-05Bel.tdb | A. Belgacem-Bouzida, Y. Djaballa, M. Notin, J. Alloys Compd., 397, 155-60(2005). doi:10.1016/j.jallcom.2005.01.026 | d905d1a4fa49ed9e18a8cabd7c727a4ac2cb7c687dd51115590bdc391fbe8d7a | viewer · TDB · JSON |
| CrGa-99Gro.tdb | J. Groebner, R. Wenzel, G.G. Fischer, R. Schmid-Fetzer, J. Phase Equilib., 20, 615-25(1999). doi:10.1361/105497199770340608 | 1cd0f87b555dfe93a6d6b97858b3bfc5399fff79d61dbef942d027ee13075555 | viewer · TDB · JSON |
| TDB file | T (K) | Phases at the invariant |
|---|---|---|
| CrGa-05Bel.tdb | 1920.44 | BCC_A2 (x(Ga) 0.15749) + CR3GA_BETA (x(Ga) 0.23) + LIQUID (x(Ga) 0.31915) |
| CrGa-05Bel.tdb | 1373.64 | BCC_A2 (x(Ga) 0.14478) + CR3GA_A15 (x(Ga) 0.23) + CR3GA_BETA (x(Ga) 0.23) |
| CrGa-05Bel.tdb | 1373.64 | CR3GA_A15 (x(Ga) 0.23) + CR3GA_BETA (x(Ga) 0.23) + LIQUID (x(Ga) 0.65029) |
| CrGa-05Bel.tdb | 1373.64 | CR3GA_BETA (x(Ga) 0.23) + CR3GA_A15 (x(Ga) 0.23) + LIQUID (x(Ga) 0.6506) |
| CrGa-05Bel.tdb | 1156.42 | CR3GA_A15 (x(Ga) 0.23) + CRGA_D810 (x(Ga) 0.5) + LIQUID (x(Ga) 0.80888) |
| CrGa-05Bel.tdb | 1156.42 | CR3GA_A15 (x(Ga) 0.23) + CRGA_D810 (x(Ga) 0.5) + LIQUID (x(Ga) 0.8086) |
| CrGa-05Bel.tdb | 1156.42 | CR3GA_A15 (x(Ga) 0.23) + CRGA_D810 (x(Ga) 0.5) + LIQUID (x(Ga) 0.80911) |
| CrGa-05Bel.tdb | 1048.12 | CRGA_D810 (x(Ga) 0.5) + CR5GA6 (x(Ga) 0.567) + LIQUID (x(Ga) 0.92457) |
| CrGa-05Bel.tdb | 1048.12 | CRGA_D810 (x(Ga) 0.5) + CR5GA6 (x(Ga) 0.567) + LIQUID (x(Ga) 0.92489) |
| CrGa-05Bel.tdb | 1048.12 | CRGA_D810 (x(Ga) 0.5) + CR5GA6 (x(Ga) 0.567) + LIQUID (x(Ga) 0.92508) |
| CrGa-05Bel.tdb | 1009 | CR3GA_A15 (x(Ga) 0.23) + CRGA_D810 (x(Ga) 0.5) + CR5GA6 (x(Ga) 0.567) |
| CrGa-05Bel.tdb | 973.03 | CR5GA6 (x(Ga) 0.567) + CRGA4 (x(Ga) 0.77) + LIQUID (x(Ga) 0.9749) |
| CrGa-05Bel.tdb | 973.03 | CR5GA6 (x(Ga) 0.567) + CRGA4 (x(Ga) 0.77) + LIQUID (x(Ga) 0.97498) |
| CrGa-05Bel.tdb | 973.03 | CR5GA6 (x(Ga) 0.567) + CRGA4 (x(Ga) 0.77) + LIQUID (x(Ga) 0.97511) |
| CrGa-05Bel.tdb | 302.91 | CRGA4 (x(Ga) 0.77) + ORTHORHOMBIC_A11 (x(Ga) 1) + LIQUID (x(Ga) 1) |
| CrGa-99Gro.tdb | 1870.49 | BCC_A2 (x(Ga) 0.14432) + CR3GA_A15 (x(Ga) 0.25) + LIQUID (x(Ga) 0.55472) |
| CrGa-99Gro.tdb | 1179.89 | CR3GA_A15 (x(Ga) 0.25) + CRGA_D810 (x(Ga) 0.5) + LIQUID (x(Ga) 0.82748) |
| CrGa-99Gro.tdb | 1179.89 | CR3GA_A15 (x(Ga) 0.25) + CRGA_D810 (x(Ga) 0.5) + LIQUID (x(Ga) 0.82745) |
| CrGa-99Gro.tdb | 1179.89 | CR3GA_A15 (x(Ga) 0.25) + CRGA_D810 (x(Ga) 0.5) + LIQUID (x(Ga) 0.82743) |
| CrGa-99Gro.tdb | 1047.23 | CRGA_D810 (x(Ga) 0.5) + CR5GA6 (x(Ga) 0.54545) + LIQUID (x(Ga) 0.85758) |
| CrGa-99Gro.tdb | 1047.23 | CRGA_D810 (x(Ga) 0.5) + CR5GA6 (x(Ga) 0.54545) + LIQUID (x(Ga) 0.85757) |
| CrGa-99Gro.tdb | 1047.23 | CRGA_D810 (x(Ga) 0.5) + CR5GA6 (x(Ga) 0.54545) + LIQUID (x(Ga) 0.8576) |
| CrGa-99Gro.tdb | 1029.04 | CR3GA_A15 (x(Ga) 0.25) + CRGA_D810 (x(Ga) 0.5) + CR5GA6 (x(Ga) 0.54545) |
| CrGa-99Gro.tdb | 973.43 | CR5GA6 (x(Ga) 0.54545) + CRGA4 (x(Ga) 0.8) + LIQUID (x(Ga) 0.87936) |
| CrGa-99Gro.tdb | 973.43 | CR5GA6 (x(Ga) 0.54545) + CRGA4 (x(Ga) 0.8) + LIQUID (x(Ga) 0.87926) |
| CrGa-99Gro.tdb | 973.43 | CR5GA6 (x(Ga) 0.54545) + CRGA4 (x(Ga) 0.8) + LIQUID (x(Ga) 0.87937) |
| CrGa-99Gro.tdb | 302.91 | CRGA4 (x(Ga) 0.8) + ORTHORHOMBIC_A11 (x(Ga) 1) + LIQUID (x(Ga) 1) |
| CrGa-99Gro.tdb | 302.91 | CRGA4 (x(Ga) 0.8) + ORTHORHOMBIC_A11 (x(Ga) 1) + LIQUID (x(Ga) 1) |
Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull CrGa-99Gro
Invariant reactions (literature)
| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|
| 1902.15 | L + Cr -> β-Cr3Ga | L: Ga 0.324; β-Cr3Ga: Ga 0.25 | model | [1] Belgacem-Bouzida 2005 | Table 5, p. 5, row 2 report | |
| 1893.15 | L + Cr -> β-Cr3Ga | L: Ga 0.33; β-Cr3Ga: Ga 0.25 | experimental | [1] Belgacem-Bouzida 2005 cites Bornand 1972 doi | Table 5, p. 5, row 1 report | |
| 1374.15 | L + Cr -> α-Cr3Ga | L: Ga 0.656; α-Cr3Ga: Ga 0.25 | model | [1] Belgacem-Bouzida 2005 | Table 5, p. 5, row 4 report | |
| 1373.15 | L + Cr -> α-Cr3Ga | L: Ga 0.635; α-Cr3Ga: Ga 0.25 | experimental | [1] Belgacem-Bouzida 2005 cites Bornand 1972 doi | Table 5, p. 5, row 3 report | |
| 1156.15 | L + α-Cr3Ga -> CrGa | L: Ga 0.807; α-Cr3Ga: Ga 0.25; CrGa: Ga 0.5 | model | [1] Belgacem-Bouzida 2005 | Table 5, p. 5, row 6 report | |
| 1153.15 | L + α-Cr3Ga -> CrGa | L: Ga 0.83; α-Cr3Ga: Ga 0.25; CrGa: Ga 0.5 | experimental | [1] Belgacem-Bouzida 2005 cites Bornand 1972 doi | Table 5, p. 5, row 5 report | |
| 1048.15 | L + α-CrGa -> Cr5Ga | L: Ga 0.923; α-CrGa: Ga 0.5; Cr5Ga: Ga 0.166667 | model | [1] Belgacem-Bouzida 2005 | Table 5, p. 5, row 8 report | |
| 1048.15 | L + α-CrGa -> Cr5Ga | L: Ga 0.925; α-CrGa: Ga 0.5; Cr5Ga: Ga 0.166667 | experimental | [1] Belgacem-Bouzida 2005 cites Bornand 1972 doi | Table 5, p. 5, row 7 report | |
| 1033.15 | α-Cr3Ga + CrGa -> Cr5Ga6 | α-Cr3Ga: Ga 0.25; CrGa: Ga 0.5; Cr5Ga6: Ga 0.545455 | experimental | [1] Belgacem-Bouzida 2005 cites Bornand 1972 doi | Table 5, p. 5, row 9 report | |
| 1009.15 | α-Cr3Ga + CrGa -> Cr5Ga6 | α-Cr3Ga: Ga 0.25; CrGa: Ga 0.5; Cr5Ga6: Ga 0.545455 | model | [1] Belgacem-Bouzida 2005 | Table 5, p. 5, row 10 report | |
| 973.15 | L + Cr5Ga6 -> CrGa4 | L: Ga 0.974; Cr5Ga6: Ga 0.545455; CrGa4: Ga 0.8 | model | [1] Belgacem-Bouzida 2005 | Table 5, p. 5, row 12 report | |
| 973.15 | L + Cr5Ga6 -> CrGa4 | L: Ga 0.975; Cr5Ga6: Ga 0.545455; CrGa4: Ga 0.8 | experimental | [1] Belgacem-Bouzida 2005 cites Bornand 1972 doi | Table 5, p. 5, row 11 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 |
|---|---|---|---|---|---|---|---|---|---|
| Cr3Ga | Cr3Ga | -12 kJ/mol-atom | 298.15 | model | -4.035 (mp-aaaaabvj) | -5.328 (oqmd-29544) | [2] Gröbner 1999 cites F 1988 | Table 1, p. 2, row 44 report | |
| Cr3Ga | Cr3Ga | -9.75 kJ/mol-atom | 298.15 | model | -4.035 (mp-aaaaabvj) | -5.328 (oqmd-29544) | [2] Gröbner 1999 | Table 1, p. 2, row 43 report | |
| Cr3Ga | Cr3Ga | -3.3 kJ/mol-atom | 850 | experimental | -4.035 (mp-aaaaabvj) | -5.328 (oqmd-29544) | [2] Gröbner 1999 cites Gonchuruk 1981 | Table 1, p. 2, row 42 report | |
| Cr3Ga (α) | -12 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 cites Djaballah 1999 | Table 4, p. 4, row 3 report | |||||
| Cr3Ga (α) | -9.75 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 cites Grobner 1999 doi | Table 4, p. 4, row 2 report | |||||
| Cr3Ga (α) | -8.24 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 5 report | |||||
| Cr3Ga (α) | -8.1 kJ/mol (basis unstated) ± 0.3 | 298.15 | experimental | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 4 report | ||||
| Cr3Ga (α) | -3.3 kJ/mol (basis unstated) | 298.15 | experimental | [1] Belgacem-Bouzida 2005 cites Goncharuk 1981 | Table 4, p. 4, row 1 report | ||||
| Cr3Ga (β) | -7.25 kJ/mol (basis unstated) ± 0.7 | 298.15 | experimental | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 6 report | ||||
| Cr3Ga (β) | -6.98 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 7 report | |||||
| Cr5Ga6 | -15.15 kJ/mol-atom | 298.15 | model | [2] Gröbner 1999 | Table 1, p. 2, row 48 report | ||||
| Cr5Ga6 | -15.15 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 cites Grobner 1999 doi | Table 4, p. 4, row 11 report | |||||
| Cr5Ga6 | -15 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 cites Djaballah 1999 | Table 4, p. 4, row 12 report | |||||
| Cr5Ga6 | -15 kJ/mol-atom | 298.15 | model | [2] Gröbner 1999 cites F 1988 | Table 1, p. 2, row 49 report | ||||
| Cr5Ga6 | -12.31 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 13 report | |||||
| Cr5Ga6 | -4.7 kJ/mol-atom | 850 | experimental | [2] Gröbner 1999 cites Gonchuruk 1981 | Table 1, p. 2, row 47 report | ||||
| Cr5Ga6 | -4.7 kJ/mol (basis unstated) | 298.15 | experimental | [1] Belgacem-Bouzida 2005 cites Goncharuk 1981 | Table 4, p. 4, row 10 report | ||||
| CrGa | CrGa | -16 kJ/mol-atom | 298.15 | model | -1.491 (mp-aaacphey) | -0.148 (oqmd-2052343) | [2] Gröbner 1999 cites F 1988 | Table 1, p. 2, row 45 report | |
| CrGa | -7.29 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 cites Grobner 1999 doi | Table 4, p. 4, row 8 report | |||||
| CrGa | CrGa | -7.29 kJ/mol-atom | 298.15 | model | -1.491 (mp-aaacphey) | -0.148 (oqmd-2052343) | [2] Gröbner 1999 | Table 1, p. 2, row 46 report | |
| CrGa | -6.06 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 9 report | |||||
| CrGa4 | -14.5 kJ/mol (basis unstated) ± 1 | 298.15 | experimental | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 17 report | ||||
| CrGa4 | -13.3 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 18 report | |||||
| CrGa4 | -8.7 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 cites Grobner 1999 doi | Table 4, p. 4, row 15 report | |||||
| CrGa4 | CrGa4 | -8.7 kJ/mol-atom | 298.15 | model | -15.083 (mp-aaacixqu) | -14.848 (oqmd-29545) | [2] Gröbner 1999 | Table 1, p. 2, row 51 report | |
| CrGa4 | CrGa4 | -8 kJ/mol-atom | 298.15 | model | -15.083 (mp-aaacixqu) | -14.848 (oqmd-29545) | [2] Gröbner 1999 cites F 1988 | Table 1, p. 2, row 52 report | |
| CrGa4 | -8 kJ/mol (basis unstated) | model | [1] Belgacem-Bouzida 2005 cites Djaballah 1999 | Table 4, p. 4, row 16 report | |||||
| CrGa4 | -7.6 kJ/mol (basis unstated) | 298.15 | experimental | [1] Belgacem-Bouzida 2005 cites Goncharuk 1981 | Table 4, p. 4, row 14 report | ||||
| CrGa4 | CrGa4 | -7.6 kJ/mol-atom | 850 | experimental | -15.083 (mp-aaacixqu) | -14.848 (oqmd-29545) | [2] Gröbner 1999 cites Gonchuruk 1981 | Table 1, p. 2, row 50 report | |
| α-Cr3Ga | -8.56 kJ/mol (basis unstated) | 1323.15 | experimental | [1] Belgacem-Bouzida 2005 | Table 1, p. 3, row 2 report | ||||
| α-Cr3Ga | -8.1 kJ/mol (basis unstated) | 1323.15 | experimental | [1] Belgacem-Bouzida 2005 | Table 1, p. 3, row 2 report | ||||
| α-Cr3Ga | -7.97 kJ/mol (basis unstated) | 1323.15 | experimental | [1] Belgacem-Bouzida 2005 | Table 1, p. 3, row 4 report | ||||
| α-Cr3Ga | -7.76 kJ/mol (basis unstated) | 1323.15 | experimental | [1] Belgacem-Bouzida 2005 | Table 1, p. 3, row 3 report | ||||
| β-Cr3Ga | -7.25 kJ/mol (basis unstated) | 1423.15 | experimental | [1] Belgacem-Bouzida 2005 | Table 2, p. 3, row 1 report |
Other properties
Formation (12)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Entropy of formation printed: ΔfS | 5.444 J/mol (basis unstated)/K | Cr3Ga (α) alloy: Ga 0.25 | model | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 5 report | ||
| Entropy of formation printed: ΔfS | 1.884 J/mol (basis unstated)/K | Cr3Ga (α) alloy: Ga 0.25 | model | [1] Belgacem-Bouzida 2005 cites Grobner 1999 doi | Table 4, p. 4, row 2 report | ||
| Entropy of formation printed: ΔfS | 6.362 J/mol (basis unstated)/K | Cr3Ga (β) alloy: Ga 0.25 | model | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 7 report | ||
| Entropy of formation printed: ΔfS | 2.37 J/mol (basis unstated)/K | Cr5Ga6 alloy: Ga 0.545455 | model | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 13 report | ||
| Entropy of formation printed: ΔfS | 0.792 J/mol (basis unstated)/K | Cr5Ga6 alloy: Ga 0.545455 | model | [1] Belgacem-Bouzida 2005 cites Grobner 1999 doi | Table 4, p. 4, row 11 report | ||
| Entropy of formation printed: ΔfS | 6.146 J/mol (basis unstated)/K | CrGa alloy: Ga 0.5 | model | [1] Belgacem-Bouzida 2005 cites Grobner 1999 doi | Table 4, p. 4, row 8 report | ||
| Entropy of formation printed: ΔfS | 8.378 J/mol (basis unstated)/K | CrGa alloy: Ga 0.5 | model | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 9 report | ||
| Entropy of formation printed: ΔfS | 0.435 J/mol (basis unstated)/K | CrGa4 alloy: Ga 0.8 | model | [1] Belgacem-Bouzida 2005 | Table 4, p. 4, row 18 report | ||
| Entropy of formation printed: ΔfS | 6.3 J/mol (basis unstated)/K | CrGa4 alloy: Ga 0.8 | model | [1] Belgacem-Bouzida 2005 cites Grobner 1999 doi | Table 4, p. 4, row 15 report | ||
| Entropy of formation printed: ΔfS | 2.7 J/mol (basis unstated)/K | 298.15 | Cr3Ga (α) alloy: Ga 0.25 | experimental | [1] Belgacem-Bouzida 2005 cites Goncharuk 1981 | Table 4, p. 4, row 1 report | |
| Entropy of formation printed: ΔfS | 4.8 J/mol (basis unstated)/K | 298.15 | Cr5Ga6 alloy: Ga 0.545455 | experimental | [1] Belgacem-Bouzida 2005 cites Goncharuk 1981 | Table 4, p. 4, row 10 report | |
| Entropy of formation printed: ΔfS | 2.9 J/mol (basis unstated)/K | 298.15 | CrGa4 alloy: Ga 0.8 | experimental | [1] Belgacem-Bouzida 2005 cites Goncharuk 1981 | Table 4, p. 4, row 14 report |
Heat capacity / entropy / enthalpy (3)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Heat content printed: Enthalpy of heating | 31390 J/mol | 810.65 | α-Cr3Ga alloy: Ga 0.25 | experimental | [1] Belgacem-Bouzida 2005 | Table 1, p. 3, row 5 report | |
| Heat content printed: Enthalpy of heating | 34900 J/mol | 860.65 | β-Cr3Ga alloy: Ga 0.25 | experimental | [1] Belgacem-Bouzida 2005 | Table 2, p. 3, row 4 report | |
| Heat content printed: Enthalpy of heating | 31390 J/mol | 1323.15 | α-Cr3Ga alloy: Ga 0.25 | experimental | [1] Belgacem-Bouzida 2005 | Table 1, p. 3, row 1 report |
Sources
Reporting papers the values were read from (a value cited from another work names that work in its row).
- A. Belgacem-Bouzida, Y. Djaballah, M. Notin, Calorimetric measurement of the intermetallic compounds Cr3Ga and CrGa4 and thermodynamic assessment of the (Cr–Ga) system, Journal of Alloys and Compounds 397, 155-160 (2005). doi:10.1016/j.jallcom.2005.01.026
- J. Gröbner, R. Wenzel, G. G. Fischer, R. Schmid-Fetzer, Thermodynamic calculation of the binary systems M-Ga and investigation of ternary M-Ga-N phase equilibria (M=Ni, Co, Pd, Cr), JPE 20, 615-625 (1999). doi:10.1361/105497199770340608