HfAl2 is an intermetallic compound combining hafnium and aluminum, belonging to the family of refractory metal aluminides. This material is of significant research interest for high-temperature structural applications due to hafnium's exceptional refractory properties and the lightweight characteristics contributed by aluminum; it represents an experimental class of materials being investigated for extreme thermal and oxidation environments where conventional superalloys reach their limits.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 120.3 | GPa | — | ||
| ↳ | 120.3 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.03864 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν) | 0.2070 | - | — | ||
Shear Modulus(G)2 entries | 87.60 | GPa | — | ||
| ↳ | 87.60 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 7.407 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Seebeck Coefficient(S) | -11.13 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)3 entries | -0.4540 | eV/atom | — | ||
| ↳ | -0.4540 | eV/atom | — | ||
| ↳ | -0.4312 | eV/atom | — |