CaHfO3
ceramicCalcium hafnate (CaHfO3) is a perovskite-structured ceramic compound combining calcium oxide with hafnium oxide, belonging to the family of refractory oxides. This material is primarily of research and developmental interest for high-temperature applications where exceptional thermal stability and chemical inertness are required, such as thermal barrier coatings, advanced refractory linings, and potential use in nuclear or aerospace environments where hafnium-based ceramics offer superior performance compared to more common alternatives like yttria-stabilized zirconia. Its attraction lies in hafnium's inherent resistance to oxidation and its ability to withstand extreme temperatures, making CaHfO3 a candidate material for next-generation thermal protection systems, though industrial deployment remains limited compared to more established perovskite ceramics.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | — | Pa | — | — | |
Poisson's Ratio(ν) | — | - | — | — | |
Shear Modulus(G) | — | Pa | — | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | — | kg/m³ | — | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | — | eV | — | — | |
| ↳ | — | eV | — | — | |
| ↳ | — | eV | — | — | |
Dielectric Constant (Relative Permittivity)(εr) | — | - | — | — | |
Magnetic Moment(μB)3 entries | — | μB | — | — | |
| ↳ | — | μB | — | — | |
| ↳ | — | µB | — | — | |
Piezoelectric Modulus(eij) | — | C/m² | — | — | |
Seebeck Coefficient(S) | — | µV/K | — | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | — | eV/atom | — | — | |
Formation Energy(ΔHf)4 entries | — | eV/atom | — | — | |
| ↳ | — | eV/atom | — | — | |
| ↳ | — | eV/atom | — | — | |
| ↳ | — | eV/atom | — | — |