Scandium diboride (ScB2) is a refractory ceramic compound belonging to the hexaboride family, characterized by exceptional hardness and thermal stability at elevated temperatures. While primarily of research and development interest rather than widespread commercial use, ScB2 is investigated for ultra-high-temperature structural applications where conventional ceramics and metals reach their performance limits. Its potential lies in aerospace thermal protection, wear-resistant coatings, and cutting tools, where the combination of high stiffness and resistance to thermal degradation offers advantages over established alternatives like alumina or silicon carbide.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 191.3 | GPa | — | ||
| ↳ | 194.5 | GPa | — | ||
Poisson's Ratio(ν) | 0.1300 | - | — | ||
Shear Modulus(G)2 entries | 194.3 | GPa | — | ||
| ↳ | 194.6 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 3.665 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -6.010 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -1.060 | eV/atom | — | ||
| ↳ | -0.8843 | eV/atom | — |