Abstract
Evalution of wear resistance of ceramics was carried out by a new solid particle impact test (slurry jet test). The alumina particles whose average diameter was 1.0, 10 and 170 μm were used as erodent. When the particles of 1.0 μm were impacted, transgranular fracture mainly occurred and wear rates were almost the same in the ceramics regardless of grain size. When the particles became large, intergranular fracture appeared on the worn surface. The wear rate of the ceramics with large grain size increased because of large occurred intergranular fracture.
