DENSIFIED MICROGRAIN REFRACTORY METAL OR SOLID SOLUTION (MIXED METAL) CARBIDE CERAMICS

摘要

Densified refractory carbide and solid solution carbide materials that have an average grain size of less than 1.1 .mu.m, a density of at least 98 % of theoretical may be prepared by any conventional densificati on procedure. Pressure densified tungsten carbide ceramic materials exhibit a simultaneous increase in Vickers hardness and a toughnes s (K IC) with decreasing average grain size.