Abstract
WC and WC-4.3 wt% Co were sintered at 1400° C under the condition of 5.8 GPa by using a modified belt-type high pressure apparatus. Their microstructures were observed with a transmission electron microscope, in order to clarify the structural features and sintering mechanisms of the materials. As a result, a stacking-fault vector and mobile dislocations during sintering were determined. Also, it is concluded that the sintering mechanisms of WC and WC-4.3 wt% Co are plastic deformation and solution precipitation through the liquid binder phase, respectively.
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