HfIr3 is an intermetallic ceramic compound combining hafnium and iridium in a 1:3 ratio, belonging to the family of refractory intermetallics designed for extreme-temperature structural applications. This material is primarily of research and development interest rather than established industrial production, positioned for potential use in aerospace and high-temperature engine environments where conventional superalloys reach their thermal limits. The hafnium-iridium system represents an emerging class of ultra-high-temperature materials being investigated for applications demanding exceptional stiffness and thermal stability in harsh operating conditions.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 39,993.8 | ksi | — | ||
| ↳ | 39,993.8 | ksi | — | ||
| ↳ | 41,209.6 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.8417 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.2712 | - | — | ||
| ↳ | 0.2700 | - | — | ||
Shear Modulus(G)3 entries | 21,592.2 | ksi | — | ||
| ↳ | 21,592.2 | ksi | — | ||
| ↳ | 23,707.9 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.7246 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | 8.360 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.01710 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.8424 | eV/atom | — |