Hf2CoIr is a ternary refractory metal intermetallic compound combining hafnium, cobalt, and iridium. This material belongs to the family of high-entropy and multi-principal-element alloys being investigated for extreme-temperature applications where conventional superalloys approach their limits. While primarily in research and development phases, Hf2CoIr and similar compositions are explored for their potential to maintain strength and oxidation resistance in aerospace and power-generation environments exceeding 1200°C, where the combination of refractory elements offers thermal stability advantages over traditional nickel- or cobalt-based superalloys.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 28,296.9 | ksi | — | ||
Poisson's Ratio(ν) | 0.4300 | - | — | ||
Shear Modulus(G) | 5,656.5 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.5474 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.6900 | µB | — | ||
Seebeck Coefficient(S) | -24.30 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.01930 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.7117 | eV/atom | — |