Er₂Zr₂O₇ is a rare-earth zirconate ceramic compound belonging to the pyrochlore oxide family, composed of erbium and zirconium oxides. This material is primarily investigated as a thermal barrier coating (TBC) candidate and advanced refractory for high-temperature applications, particularly in aerospace and power generation contexts where superior thermal insulation and oxidation resistance are critical. Its appeal over conventional zirconia-based coatings lies in its potential for improved thermal stability at ultra-high temperatures and reduced sintering rates, making it relevant for next-generation gas turbine engines and hypersonic vehicle components.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 17,471.2 | ksi | — | ||
Shear Modulus(G) | 5,402.7 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.2629 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 2.636 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -160.1 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.04980 | eV/atom | — | ||
Formation Energy(ΔHf) | -3.739 | eV/atom | — |