Comparative Study on Micro-Grinding Performance of 2.5D Cf/SiCs, 2.5D SiCf/SiCs, and SiC Ceramics

To investigate the micro-grinding process and performance of 2.5D Cf/SiC composites SiCf/SiC in depth, single-factor experiments were conducted by using SiC ceramics as a comparison. Differences material removal process, surface microstructure, roughness, grinding force three materials under same parameters comparatively analyzed. The results indicate that crack propagation is severe during ceramics. ground uneven, accompanied pit defects large roughness Ra. However, presence reinforcing fibers interfaces two types can inhibit or change their extension directions. Therefore, surfaces are smooth flat after grinding, with small low In addition, processes both related to fiber orientation. There differences paths fracture positions weft layer radial layer, which result different forms defects. During micro-grinding, real-time signals relatively stable, while have number spikes. average is: > composites.