Patent ID: 8114800

Claim:
A ceramic powder, consisting of: a pyrochlore structure Gd v (Zr x Hf y )O z wherein v≈2, x+y ≈2 and z≈7; and secondary oxides wherein the secondary oxides are selected from the group consisting of zirconium oxide, hafnium oxide, and a combination thereof, wherein the secondary oxides have a proportion of from 0.5 wt % to 10 wt %; and a sintering aid, wherein the sintering aid is selected from the group consisting of up to 0.05 wt % silicon oxide, up to 0.1 wt % calcium oxide, up to 0.1 wt % magnesium oxide, up to 0.1 wt % iron oxide, up to 0.1 wt % aluminum oxide, up to 0.8 wt % titanium oxide, and a combination thereof.