ALUMINA-BASE CERAMIC SINTER AND PROCESS FOR PRODUCING THE SAME

摘要

An alumina-base ceramic sinter having high hardness, excellent wear resistance, high strength and high toughness, being suitable particularly for cutting tools and wear-resistant members, and containing 5-70 % by volume of WC having a crystal grain size of 5 .mu.m or less and 5-70 % by volume of a Ti(C, N) solid solution having a molar C/N ratio ranging from 1/9 to 9/1.