Holmium disilicide (HoSi₂) is an intermetallic ceramic compound belonging to the rare-earth disilicide family, characterized by a hexagonal crystal structure and metallic bonding characteristics unusual for ceramics. It is primarily of research and specialized industrial interest for high-temperature applications where thermal stability and oxidation resistance are critical, particularly in aerospace thermal protection systems, refractory coatings, and advanced composite matrices. Compared to conventional ceramics, rare-earth disilicides like HoSi₂ offer improved fracture toughness and thermal shock resistance at extreme temperatures, making them candidates for next-generation hypersonic vehicle components and furnace elements, though manufacturing and cost limit current widespread adoption.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 88.17 | GPa | — | ||
Poisson's Ratio(ν) | 0.3400 | - | — | ||
Shear Modulus(G) | 34.62 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 6.342 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -9.390 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.1017 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.6022 | eV/atom | — | ||
| ↳ | -0.4662 | eV/atom | — |