EFFECT OF TI(C,N) ADDITION ON SINTERING BEHAVIOR AND PROPERTIES OF BINDER-MODIFIED WC-10CO CEMENTED CARBIDE

In the present investigation the microstructure and mechanical propert ies of WC-10Co, WC-8.3Ti(C,N)-12Co, WC-8.3Ti(C,N)-6Co-6Ni and WC-7Ti(C ,N)-2Mo2C-6Co-6Ni cemented carbides were studied. Introduction of Ti(C ,N) in WC-10Co cemented carbide imposed sintering difficulties and hot isostatic pressing was required to obtain fully dense material. The m odification of the binder cobalt with nickel and molybdenum did not no ticeably affect the sintered microstructure. In general the mechanical properties of Ti(C,N)-containing cemented carbides were inferior to t hose of WC-10Co cemented carbide.