Au–Rh system
49 accepted literature values from 1 paper(s) (experimental 24, model 23, unspecified 2); 2 calculated phase diagram(s). 2 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 (4) · papers (bibliography) · Markdown
| Evidence class | Values |
|---|---|
| experimental | 24 |
| model | 23 |
| unspecified | 2 |
| Property group | Values |
|---|---|
| phase transition | 20 |
| phase equilibrium | 27 |
| crystal structure | 2 |
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 |
|---|---|---|---|
| AuRh-84Oka.tdb | H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 5, 384-87(1984). doi:10.1007/BF02872960 | 2ed3f4fa2bf652fe69cd8c9f4dec297a4d7bf1f5e7981010b0e3ceb764967ca2 | viewer · TDB · JSON |
| AuRh-98Spe-LB.tdb | P.J. Spencer, unpublished, 1998. | 16a5b634a0097f97e0b188a319ac0e0b8c2e9e5a549425477584ecbec4a00739 | viewer · TDB · JSON |
| TDB file | T (K) | Phases at the invariant |
|---|---|---|
| AuRh-84Oka.tdb | 2152.59 | LIQUID (x(Rh) 0.1765) + LIQUID#2 (x(Rh) 0.901) + FCC_A1 (x(Rh) 0.98169) |
| AuRh-84Oka.tdb | 1341.86 | LIQUID (x(Rh) 0.01204) + FCC_A1 (x(Rh) 0.01608) + FCC_A1#2 (x(Rh) 0.99682) |
| AuRh-98Spe-LB.tdb | 2135.7 | LIQUID (x(Rh) 0.22934) + LIQUID#2 (x(Rh) 0.87905) + FCC_A1 (x(Rh) 0.98287) |
| AuRh-98Spe-LB.tdb | 1343.13 | LIQUID (x(Rh) 0.01098) + FCC_A1 (x(Rh) 0.01615) + FCC_A1#2 (x(Rh) 0.9968) |
Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AuRh-84Oka
Other properties
Phase transition (20)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Phase transition | 1336.15 K | 1336.15 | peritectic alloy: Au 0.825, Rh 0.175 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 3 report | |
| Phase transition | 1336.15 K | 1336.15 | peritectic alloy: Au 0.908, Rh 0.092 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 1 report | |
| Phase transition | 1341.15 K | 1341.15 | peritectic alloy: Au 0.895, Rh 0.105 | experimental | [1] Okamoto 1984 cites ref. 64Rau | Table 1, p. 2, row 13 report | |
| Phase transition | 1343.15 K | 1343.15 | peritectic alloy: Au 0.908, Rh 0.092 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 2 report | |
| Phase transition | 1383.15 K | 1383.15 | peritectic alloy: Au 0.676, Rh 0.324 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 5 report | |
| Phase transition | 1383.15 K | 1383.15 | peritectic alloy: Au 0.549, Rh 0.451 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 7 report | |
| Phase transition | 1383.15 K | 1383.15 | peritectic alloy: Au 0.183, Rh 0.817 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 11 report | |
| Phase transition | 1383.15 K | 1383.15 | peritectic alloy: Au 0.258, Rh 0.742 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 9 report | |
| Phase transition | 1393.15 K | 1393.15 | peritectic alloy: Au 0.825, Rh 0.175 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 4 report | |
| Phase transition | 1403.15 K | 1403.15 | peritectic alloy: Au 0.549, Rh 0.451 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 8 report | |
| Phase transition | 1403.15 K | 1403.15 | peritectic alloy: Au 0.183, Rh 0.817 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 12 report | |
| Phase transition | 1413.15 K | 1413.15 | peritectic alloy: Au 0.258, Rh 0.742 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 10 report | |
| Phase transition | 1463.15 K | 1463.15 | peritectic alloy: Au 0.676, Rh 0.324 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 6 report | |
| Phase transition | 2158.15 K | 2158.15 | peritectic alloy: Au 0.183, Rh 0.817 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 14 report | |
| Phase transition | 2158.15 K | 2158.15 | peritectic alloy: Au 0.084, Rh 0.916 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 18 report | |
| Phase transition | 2158.15 K | 2158.15 | peritectic alloy: Au 0.116, Rh 0.884 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 16 report | |
| Phase transition | 2193.15 K | 2193.15 | peritectic alloy: Au 0.116, Rh 0.884 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 15 report | |
| Phase transition | 2193.15 K | 2193.15 | peritectic alloy: Au 0.027, Rh 0.973 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 20 report | |
| Phase transition | 2203.15 K | 2203.15 | peritectic alloy: Au 0.084, Rh 0.916 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 17 report | |
| Phase transition | 2213.15 K | 2213.15 | peritectic alloy: Au 0.027, Rh 0.973 | experimental | [1] Okamoto 1984 cites ref. 59Rud | Table 1, p. 2, row 19 report |
Phase equilibrium (27)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Phase assemblage | 1337.58 | (Au) + L alloy: Au 1 | model | [1] Okamoto 1984 | p. 1 report | The latter temperature, accepted here, is only slightly above the melting point of pure Au, 1064.43 ~ [81BAP]. | |
| Phase composition | 873.15 | (Au)/[(Au) + (Rh)] + (Rh)/[(Au) + (Rh)] + (Au) + (Rh) (Au)/[(Au) + (Rh)]: Au 0.996, Rh 0.004; (Rh)/[(Au) + (Rh)]: Au 0.001, Rh 0.999; (Au): Au 0.996, Rh 0.004; (Rh): Au 0.001, Rh 0.999 | experimental | [1] Okamoto 1984 cites ref. 64Rau | Table 2, p. 2, row 3 report | ||
| Phase composition | 873.15 | (Au)/[(Au) + (Rh)] + [(Au) + (Rh)]/(Rh) (Au)/[(Au) + (Rh)]: Au 0.998, Rh 0.002; [(Au) + (Rh)]/(Rh): Au 0, Rh 1 | model | [1] Okamoto 1984 | Table 5, p. 3, row 17 report | ||
| Phase composition | 1073.15 | (Au)/[(Au) + (Rh)] + (Rh)/[(Au) + (Rh)] + (Au) + (Rh) (Au)/[(Au) + (Rh)]: Au 0.989, Rh 0.011; (Rh)/[(Au) + (Rh)]: Au 0.001, Rh 0.999; (Au): Au 0.989, Rh 0.011; (Rh): Au 0.001, Rh 0.999 | experimental | [1] Okamoto 1984 cites ref. 64Rau | Table 2, p. 2, row 2 report | ||
| Phase composition | 1073.15 | (Au)/[(Au) + (Rh)] + [(Au) + (Rh)]/(Rh) (Au)/[(Au) + (Rh)]: Au 0.995, Rh 0.005; [(Au) + (Rh)]/(Rh): Au 0.001, Rh 0.999 | model | [1] Okamoto 1984 | Table 5, p. 3, row 16 report | ||
| Phase composition | 1173.15 | (Au)/[(Au) + (Rh)] + (Au) (Au)/[(Au) + (Rh)]: Au 0.994, Rh 0.006; (Au): Au 0.994, Rh 0.006 | experimental | [1] Okamoto 1984 cites ref. 31Lin | Table 2, p. 2, row 4 report | ||
| Phase composition | 1273.15 | (Au)/[(Au) + (Rh)] + (Rh)/[(Au) + (Rh)] + (Au) + (Rh) (Au)/[(Au) + (Rh)]: Au 0.986, Rh 0.014; (Rh)/[(Au) + (Rh)]: Au 0.003, Rh 0.997; (Au): Au 0.986, Rh 0.014; (Rh): Au 0.003, Rh 0.997 | experimental | [1] Okamoto 1984 cites ref. 64Rau | Table 2, p. 2, row 1 report | ||
| Phase composition | 1273.15 | (Au)/[(Au) + (Rh)] + [(Au) + (Rh)]/(Rh) (Au)/[(Au) + (Rh)]: Au 0.987, Rh 0.013; [(Au) + (Rh)]/(Rh): Au 0.002, Rh 0.998 | model | [1] Okamoto 1984 | Table 5, p. 3, row 15 report | ||
| Phase composition | 1341.15 | L/[L + (Rh)] + [L + (Rh)]/(Rh) + (Au)/[(Au) + (Rh)] + [(Au) + (Rh)]/(Rh) + [L2 + L1]/L L/[L + (Rh)]: Au 0.985, Rh 0.015; [L + (Rh)]/(Rh): Au 0.003, Rh 0.997; (Au)/[(Au) + (Rh)]: Au 0.984, Rh 0.016; [(Au) + (Rh)]/(Rh): Au 0.003, Rh 0.997; [L2 + L1]/L: Au 0.003, Rh 0.997 | model | [1] Okamoto 1984 | Table 5, p. 3, row 14 report | ||
| Phase composition | 1473.15 | L/[L + (Rh)] + [L + (Rh)]/(Rh) + [L2 + L1]/L L/[L + (Rh)]: Au 0.978, Rh 0.022; [L + (Rh)]/(Rh): Au 0.005, Rh 0.995; [L2 + L1]/L: Au 0.005, Rh 0.995 | model | [1] Okamoto 1984 | Table 5, p. 3, row 13 report | ||
| Phase composition | 1573.15 | L/[L + (Rh)] + [L + (Rh)]/(Rh) L/[L + (Rh)]: Au 0.987, Rh 0.013; [L + (Rh)]/(Rh): Au 0.005, Rh 0.995 | model | [1] Okamoto 1984 | Table 5, p. 3, row 12 report | ||
| Phase composition | 1593.15 | L/[L1 + L2] + [L2 + L1]/L + L/[L + (Rh)] + [L + (Rh)]/(Rh) L/[L1 + L2]: Au 0.986, Rh 0.014; [L2 + L1]/L: Au 0.295, Rh 0.705; L/[L + (Rh)]: Au 0.295, Rh 0.705; [L + (Rh)]/(Rh): Au 0.005, Rh 0.995 | model | [1] Okamoto 1984 | Table 5, p. 3, row 11 report | ||
| Phase composition | 1673.15 | L/[L1 + L2] + [L2 + L1]/L + L/[L + (Rh)] + [L + (Rh)]/(Rh) L/[L1 + L2]: Au 0.983, Rh 0.017; [L2 + L1]/L: Au 0.008, Rh 0.992; L/[L + (Rh)]: Au 0.956, Rh 0.044; [L + (Rh)]/(Rh): Au 0.008, Rh 0.992 | model | [1] Okamoto 1984 | Table 5, p. 3, row 10 report | ||
| Phase composition | 1873.15 | L/[L1 + L2] + [L2 + L1]/L + L/[L + (Rh)] + [L + (Rh)]/(Rh) L/[L1 + L2]: Au 0.972, Rh 0.028; [L2 + L1]/L: Au 0.012, Rh 0.988; L/[L + (Rh)]: Au 0.919, Rh 0.081; [L + (Rh)]/(Rh): Au 0.012, Rh 0.988 | model | [1] Okamoto 1984 | Table 5, p. 3, row 9 report | ||
| Phase composition | 2073.15 | L/[L1 + L2] + [L2 + L1]/L + L/[L + (Rh)] + [L + (Rh)]/(Rh) L/[L1 + L2]: Au 0.959, Rh 0.041; [L2 + L1]/L: Au 0.017, Rh 0.983; L/[L + (Rh)]: Au 0.858, Rh 0.142; [L + (Rh)]/(Rh): Au 0.017, Rh 0.983 | model | [1] Okamoto 1984 | Table 5, p. 3, row 8 report | ||
| Phase composition | 2158.15 | L/[L1 + L2] + [L2 + L1]/L + L/[L + (Rh)] + [L + (Rh)]/(Rh) L/[L1 + L2]: Au 0.822, Rh 0.178; [L2 + L1]/L: Au 0.1, Rh 0.9; L/[L + (Rh)]: Au 0.1, Rh 0.9; [L + (Rh)]/(Rh): Au 0.019, Rh 0.981 | model | [1] Okamoto 1984 | Table 5, p. 3, row 22 report | ||
| Phase composition | 2173.15 | L/[L1 + L2] + [L2 + L1]/L + L/[L + (Rh)] + [L + (Rh)]/(Rh) L/[L1 + L2]: Au 0.818, Rh 0.182; [L2 + L1]/L: Au 0.103, Rh 0.897; L/[L + (Rh)]: Au 0.052, Rh 0.948; [L + (Rh)]/(Rh): Au 0.012, Rh 0.988 | model | [1] Okamoto 1984 | Table 5, p. 3, row 21 report | ||
| Phase composition | 2223.15 | L/[L + (Rh)] + [L + (Rh)]/(Rh) L/[L + (Rh)]: Au 0.01, Rh 0.99; [L + (Rh)]/(Rh): Au 0.003, Rh 0.997 | model | [1] Okamoto 1984 | Table 5, p. 3, row 20 report | ||
| Phase composition | 2273.15 | L/[L1 + L2] + [L2 + L1]/L L/[L1 + L2]: Au 0.786, Rh 0.214; [L2 + L1]/L: Au 0.124, Rh 0.876 | model | [1] Okamoto 1984 | Table 5, p. 3, row 7 report | ||
| Phase composition | 2473.15 | L/[L1 + L2] + [L2 + L1]/L L/[L1 + L2]: Au 0.71, Rh 0.29; [L2 + L1]/L: Au 0.18, Rh 0.82 | model | [1] Okamoto 1984 | Table 5, p. 3, row 6 report | ||
| Phase composition | 2673.15 | L/[L1 + L2] + [L2 + L1]/L L/[L1 + L2]: Au 0.594, Rh 0.406; [L2 + L1]/L: Au 0.273, Rh 0.727 | model | [1] Okamoto 1984 | Table 5, p. 3, row 5 report | ||
| Phase composition | 2773.15 | L/[L1 + L2] + [L2 + L1]/L L/[L1 + L2]: Au 0.47, Rh 0.53; [L2 + L1]/L: Au 0.377, Rh 0.623 | model | [1] Okamoto 1984 | Table 5, p. 3, row 19 report | ||
| Phase composition | 2782.15 | L/[L1 + L2] + [L2 + L1]/L L/[L1 + L2]: Au 0.428, Rh 0.572; [L2 + L1]/L: Au 0.428, Rh 0.572 | model | [1] Okamoto 1984 | Table 5, p. 3, row 18 report | ||
| Phase composition | 2873.15 | L/[L1 + L2] + [L2 + L1]/L L/[L1 + L2]: Au 0.827, Rh 0.173; [L2 + L1]/L: Au 0.629, Rh 0.371 | model | [1] Okamoto 1984 | Table 5, p. 3, row 4 report | ||
| Phase composition | 2923.15 | L/[L1 + L2] + [L2 + L1]/L L/[L1 + L2]: Au 0.803, Rh 0.197; [L2 + L1]/L: Au 0.66, Rh 0.34 | model | [1] Okamoto 1984 | Table 5, p. 3, row 3 report | ||
| Phase composition | 2973.15 | L/[L1 + L2] + [L2 + L1]/L L/[L1 + L2]: Au 0.77, Rh 0.23; [L2 + L1]/L: Au 0.7, Rh 0.3 | model | [1] Okamoto 1984 | Table 5, p. 3, row 2 report | ||
| Phase composition | 2980.15 | L/[L1 + L2] + [L2 + L1]/L L/[L1 + L2]: Au 0.735, Rh 0.265; [L2 + L1]/L: Au 0.735, Rh 0.265 | model | [1] Okamoto 1984 | Table 5, p. 3, row 1 report |
Crystal structure (2)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Lattice a | 4.0784 Å | 298.15 | (Au) alloy: Rh 0 | unspecified | [1] Okamoto 1984 cites ref. 81Kin | Table 3, p. 2, row 1 report | |
| Lattice a | 2.8032 Å | 298.15 | (Rh) | unspecified | [1] Okamoto 1984 cites ref. 81Kin | Table 3, p. 2, row 2 report |
Sources
Reporting papers the values were read from (a value cited from another work names that work in its row).
- H. Okamoto, T. B. Massalski, The Au-Rh (Gold-Rhodium) system, Bulletin of Alloy Phase Diagrams 5, 384-387 (1984). doi:10.1007/bf02872960