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US 2012/0238437 A1Published application
Nanostructured composite material of stabilized zirconia with cerium oxide and doped alumina with zirconia, use, and procedure for obtaining same
AssigneeConsejo Superior De Investigaciones Cientificas (Csic)
InventorsRamóna Torrecillas San Millan, Luis Antonio Díaz Rodríguez
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Abstract
The present invention provides a nanostructured composite material of γ-alumina-doped zirconia stabilised with cerium oxide and zirconia-doped α-alumina, the process for obtaining it and the applications thereof, such as knee prostheses, hip prostheses, dental implants, mechanical components for pumps, alkaline batteries, ceramic components for stereotactic neurology, cutting tools, etc.
Claims24
A nanostructured composite material that comprises:
- a) ZrO2 stabilised with CeO2, with a mean particle size ranging between 50 and 1000 nm, doped with γ-Al2O3, with a concentration of γ-Al2O3 ranging between 5% and 50% by volume with respect to the total of (a) and mean sizes of less than 50 nm.
- b) α-Al2O3, with a mean particle size ranging between 150 and 400 nm, doped with ZrO2, with a mean particle size ≦40 nm and a concentration of ZrO2 ranging between 0.5% and 5% by weight with respect to the total of (b).
Dependencies are inferred from the claim text.