Hf2Al4C5 is a hafnium-aluminum carbide ceramic composite that belongs to the MAX phase or similar ternary carbide family, combining metallic and ceramic characteristics. This material is primarily of research interest for high-temperature structural applications, particularly in aerospace and thermal management systems where excellent stiffness and chemical stability are required at elevated temperatures. Engineers select hafnium carbides over conventional refractories or superalloys when combining light weight with exceptional hardness and thermal resistance is critical, though commercial availability remains limited to specialized research suppliers.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 189.1 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.05188 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν) | 0.2162 | - | — | ||
Shear Modulus(G) | 132.3 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 6.659 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.00720 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.5391 | eV/atom | — |