Alumina/zirconia ceramics and method of producing the same

摘要

Composite ceramics having high strength, high toughness and excellent abrasion resistance, and a method of producing the same. The composite ceramics comprise 10 to 30 mass% of a zirconia crystal phase containing 9 to 12 mol% of CeO2 and 2.8 to 4.5 mol% of Y2O3; and 70 to 90 mass% of an alumina crystal phase, the zirconia crystal phase having an average crystal particle size of not larger than 1 mu m.