cBN–Ti3SiC2 composites

Abstract cBN–Ti 3 SiC 2 composites with different cBN volume ratio were sintered by high pressure hot pressing. From the microscopic observation it could be concluded that the samples exhibit a porous less, dense structure. Various phase (TiB 2 , SiC 4 , TiC and SiC been formed in the cBN–Ti 3 SiC 2 interface. X-Ray absorption study was used to determine the bonding characteristics of the cBN–Ti 3 SiC 2 samples. The mechanical investigations of the BN–Ti 3 SiC 2 composites were performed using a hardness test and an ultrasonic method basing on the measurement of the velocity of ultrasonic waves transition through the samples. Young's modulus and hardness of the investigated composites strictly depends on the cBN contents.