Ta₃B₄ is a refractory ceramic compound belonging to the tantalum boride family, combining the extreme hardness and thermal stability of boride ceramics with tantalum's high density and refractory character. This material is primarily of research and specialized industrial interest, used in extreme-environment applications where conventional ceramics or metals fail, including ultra-high-temperature structural components, wear-resistant coatings, and cutting tool inserts. Engineers select tantalum borides when thermal shock resistance, chemical inertness, and hardness at elevated temperatures outweigh the cost and difficulty of processing these brittle, dense compounds.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 293.8 | GPa | DFT · OptB88vdW | ||
Poisson's Ratio(ν) | 0.2200 | - | DFT · OptB88vdW | ||
Shear Modulus(G) | 204.2 | GPa | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 13.26 | kg/m³ | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 0.000 | eV | DFT · OptB88vdW | ||
| ↳ | 0.000 | eV | DFT · TBmBJ | ||
| ↳ | 0.000 | eV | Measured | ||
Magnetic Moment(μB) | 0.000 | µB | DFT · OptB88vdW | ||
Thermoelectric Power Factor(PF)2 entries | 0.0000369 | W/(m·K²) | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 0.0000381 | W/(m·K²) | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C | ||
Seebeck Coefficient(S)2 entries | -1.763 | μV/K | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | -1.693 | μV/K | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | DFT · OptB88vdW | ||
Formation Energy(ΔHf) | -0.7179 | eV/atom | DFT · OptB88vdW |
Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data