Si₂Ta₄ is a tantalum silicide compound, a refractory ceramic material belonging to the family of transition metal silicides used in high-temperature and harsh-environment applications. This material represents an experimental or specialized composition within the silicide family, combining tantalum's exceptional refractory properties with silicon to create a phase with potential for extreme temperature stability and oxidation resistance. Tantalum silicides are primarily investigated for aerospace thermal protection systems, high-temperature structural components, and electronic device applications where conventional metals or oxides fail; they are notably more thermally stable than many competing refractory compounds, though processing and cost remain significant engineering trade-offs compared to established alternatives like alumina or tungsten alloys.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 30,822.1 | ksi | — | ||
Shear Modulus(G) | 14,966 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.00100 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | -0.4590 | eV/atom | — |