Abrasion Wear of Ceramics from Measurement of Wear Track Shape

Abstract

The abrasion wear of various ceramics were measured using a diamond grinding wheel at the load of 130 gf and the sliding velocity of 1.26m/s. The wear volume was obtained from the wear track shape on the ceramics sample, and the specific wear rate (W_s) was calculated from the linear relation between sliding distance and wear volume. W_s was highest for Al₂O₃, much lower for SiC and ZrO₂, and lowest for Si₃N₄. The grain boundary fracture caused accompanying the cutting by diamond grains may explain the high wear rate of Al₂O₃.