Niobium disilicide (NbSi₂) is an intermetallic compound combining niobium and silicon, belonging to the class of refractory silicides. It is primarily investigated for high-temperature structural applications where exceptional hardness and oxidation resistance are required, particularly in aerospace and power generation sectors. NbSi₂-based materials and composites are valued for their potential to operate at temperatures where conventional nickel-superalloys begin to degrade, though manufacturing and brittleness challenges have limited widespread adoption compared to established ceramic matrix composites.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 174.6 | GPa | — | ||
| ↳ | 174.6 | GPa | — | ||
| ↳ | 190.0 | MPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.05289 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν)2 entries | 0.1830 | - | — | ||
| ↳ | 0.2500 | - | — | ||
Shear Modulus(G)3 entries | 140.4 | GPa | — | ||
| ↳ | 140.4 | GPa | — | ||
| ↳ | 110.0 | MPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 5.465 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 0.000 | eV | — | ||
| ↳ | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | 25.54 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.5566 | eV/atom | — | ||
| ↳ | -0.4159 | eV/atom | — |