High hardness, high Young's modulus, the WCSiC sintering body null which possesses high fracture toughness

摘要

PROBLEM TO BE SOLVED: To provide a WC-SiC-based composite with high hardness, a high young's modulus and a high fracture toughness value without adding, as a main element, Co causing lowering of hardness and young's modulus; and to provide a method for manufacturing the same.;SOLUTION: This WC-SiC-based composite with high hardness, a high young's modulus and a high fracture toughness value has 1-30 vol.%, preferably 1-20 vol.%, more preferably 5-15 vol.% SiC phase is contained and the balance WC. This method therefor is characterized in that a mixed powder composed of 1-30 vol.%, preferably 1-20 vol.%, more preferably 5-15 vol.% SiC whisker and the balance WC powder is sintered at a sintering temperature of 1,550 to 1,750°C.;COPYRIGHT: (C)2006,JPO&NCIPI