Ceramic zirconium oxide with finely dispersed oxide and/or non-oxide particles - improve thermal shock strength and high temp. properties

摘要

ZrO2 method with finely dispersed second phase made up of 0.1-30 vol.% of oxide or non-oxide particles having an average particle size of 400mm or less. The non-oxide nano-particles are chosen from SiC, TiC, WC, Si3N4, TiN or TiB2. The oxide particles are Al2O3. The material is made by mixing the nano-particles with ZrO2 powder, moulding and then sintering at at least 1200 deg.C.. ADVANTAGE - Material has high toughness and strength with excellent thermal shock strength and high temp. properties without losing the actual properties of ZrO2.