Abstract:

The particle size of silicon powder has important effect on the performance of silicon nitride bonded silicon carbide.With the same silica total amount,the effects of the ratios of silicon powder with particle sizes of 400 mesh and 200 mesh on Si3N4-SiC physical performance,silicon nitride content and silicon nitride morphology of the fracture are studied in this paper.The results show that the samples  with the ratio of 1∶1 has the best comprehensive properties.