| abstract |
An article includes a body coated with a ceramic coating. The ceramic coating can include Y2O3 ranging from about 45 mole% to about 99 mole%, ZrO2 ranging from about 0 mole% to about 55 mole%, and ranging from about 0 mole%. Up to about 10 mol% of Al2O3. Or the ceramic coating may comprise Y2O3 ranging from about 30 mole% to about 60 mole%, ZrO2 ranging from about 0 mole% to about 20 mole%, and ranging from about 30 moles. % to about 60 mol% of Al2O3. |