Cu3Au is an intermetallic compound composed of copper and gold in a 3:1 ratio, forming an ordered metallic phase with face-centered cubic structure. This material is primarily of research and specialized industrial interest rather than a commodity alloy, valued for its unique combination of stiffness and density that arises from its ordered atomic structure. While limited in high-volume production, Cu3Au finds application in precision electronics, wear-resistant coatings, and jewelry alloys where the color, hardness, and corrosion resistance of gold can be achieved at lower cost through copper alloying.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 141.8 | GPa | — | ||
| ↳ | 141.8 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 1.055 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν) | 0.3498 | - | — | ||
Shear Modulus(G)2 entries | 47.32 | GPa | — | ||
| ↳ | 47.32 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 11.88 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -11.12 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.03892 | eV/atom | — |