Co₂B is a cobalt boride intermetallic compound that forms as a hard, brittle phase in cobalt-based alloy systems. It is primarily encountered as a constituent in tool steels, wear-resistant coatings, and high-performance alloys rather than as a standalone material, where it contributes exceptional hardness and thermal stability. Engineers select cobalt borides for applications demanding resistance to abrasive wear, high-temperature oxidation, and mechanical impact; common alternatives include tungsten carbides and ceramic composites, though cobalt borides offer superior toughness in certain duty cycles.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 246.7 | GPa | — | ||
| ↳ | 264.2 | GPa | — | ||
Poisson's Ratio(ν) | 0.3300 | - | — | ||
Shear Modulus(G)2 entries | 104.0 | GPa | — | ||
| ↳ | 99.92 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 8.187 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 3.725 | µB | — | ||
Seebeck Coefficient(S) | -4.310 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.03510 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.2011 | eV/atom | — | ||
| ↳ | -0.2094 | eV/atom | — |