Patent ID: 8546285

Claim:
A nanostructured composite material that comprises: a) ZrO 2 stabilised with CeO 2 , with a mean particle size ranging between 50 and 1000 nm, doped with γ-Al 2 O 3 , with a concentration of γ-Al 2 O 3 ranging between 5% and 50% by volume with respect to the total of (a) and mean sizes of less than 50 nm, b) α-Al 2 O 3 , with a mean particle size ranging between 150 and 400 nm, doped with ZrO 2 , with a mean particle size ≦40 nm and a concentration of ZrO 2 ranging between 0.5% and 5% by weight with respect to the total of (b).