Innovative method of surface hardening of tungsten carbide hard alloy

Hard alloy 90%WC+10 % Co was subjected to electro-explosive alloying by coal-graphite fibers with SiC with intensity of influence on the surface 6.0 GWt per square meter. It is found out that W2C is formed instead of WC plus small amount of SiC, intermetallic compound W(SiAl) 2. Nanohardness in this case increases 2-2,5 as much in comparison with the initial one. The roughness of surface increases a little. The depth of hardening reaches 25-30 μm.