Rapid Sintering of Nanostuctured Tungsten Carbide by High-Frequency Induction Heating and its Mechanical Properties

Abstract

Extremely dense WC with a relative density of up to 99% was obtained within five minutes under a pressure of 80 MPa using the High Frequency Induction Heated Sintering method The average grain size of the WC was about 71 nm The advantage of this process is not only rapid densification to obtain a neartheoretical density but also the prohibition of grain growth in nano structured materials The hardness and fracture toughness of the dense WC produced by HFIHS were 2660 kg mm(-2) and 7 2 MPa na(1/2), respectively