Abstract
Mo 2C is normally added to improve the wettability between Ti(C,N) and Ni in Ti(C,N)-based cermets. Due to the increasing price of Mo 2C, much attention has been paid to Ti(C,N)-based cermets with WC addition. In this paper, effect of WC content on the microstructure and properties of Ti(C 0.7N 0.3)-xWC-15wt.%Ni cermets free of Mo 2C was studied. The experimental results show that the microstructure is refined obviously with the increase of WC content. The fracture toughness decreases with the increase of WC content when WC content is 10–25 wt.%, and increases when WC content varies from 25 wt.% to 30 wt.%.
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