抄録
This paper deals with the grindability of representative fine ceramics: Si3N4, SiC, PS-ZrO2 and Al2O3. A series of surface plunge grinding experiments for these ceramics have been conducted using a metal bonded diamond wheel. Grinding characteristic parameters such as grinding forces, finished surface roughness, grinding wheel wear, surface fracture area ratio of ground surface and so on have been measured to evaluate the grindability of these ceramics. The results show that Si3N4 is the most difficult to grind in four kinds of ceramics, because its grinding forces, specific grinding energy and wheel wear rate are higher than any other ceramics. The material removal mechanisms of PS-ZrO2 and Si3N4 ceramics are more ductile than those of Al2O3 and SiC ceramics. The surface fracture area ratio of ground surface decreases power functionally with increasing fracture toughness of ceramics.
