Potassium chromate (K₃CrO₄) is an inorganic ionic ceramic compound composed of potassium cations and chromate anions, belonging to the family of chromate salts. While not commonly used as a primary structural ceramic, it functions as a specialized material in analytical chemistry, corrosion inhibition, and laboratory applications where its chemical reactivity and optical properties are exploited. Engineers encounter K₃CrO₄ primarily in protective coatings, corrosion inhibitor formulations, and as a laboratory reagent rather than as a load-bearing or thermal engineering material, making it a niche ceramic of interest in chemical processing and materials research rather than mainstream mechanical applications.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 36.94 | GPa | — | ||
Poisson's Ratio(ν) | 0.4800 | - | — | ||
Shear Modulus(G) | 6.230 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 2.632 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 1.775 range 0.000–3.550median of 2 measurements | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 17.28 | - | — | ||
Magnetic Moment(μB) | 1.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 1.213 | C/m² | — | ||
| ↳ | 0.2835 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | 34.32 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000200 | eV/atom | — | ||
Formation Energy(ΔHf) | -2.010 | eV/atom | — |