Patent ID: 6960395

Claim:
A ceramic composition, which comprises: 1. from about 92 to about 95 mole % zirconia; and 2. from about 5 to about 8 mole % of a stabilizer component comprising: a. a first metal oxide selected from the group consisting of yttria, calcia, ceria, scandia, magnesia, india and mixtures thereof in amount of from about 3 to about 5 mole %; b. a second metal oxide of a trivalent metal atom selected from the group consisting of lanthana, and mixtures of lanthana with gadolinia, neodymia, samaria, or dysprosia, in an amount of from about 0.25 to about 2 mole %; and c. ytterbia in an amount of from about 0.5 to about 2 mole %.