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In this work, the Woka 5810 powders (88% tungsten carbide–12% cobalt) were used to produce coating by high velocity oxy-fuel spraying. WC–Co is widely used as a tribological coating material providing a combination of high toughness, high hardness, and good strength. The treated samples were characterized by using optical micrograph, stereo microscope and scanning electron microscopy, X-ray diffractometry, and microhardness tests. Also the wear performance of the coatings was investigated. The results indicated that the coating shows slight higher microhardness and better abrasive wear resistance than the conventional counterpart. The friction coefficient of coating was low. The scanning electron microscopy and energy dispersive spectroscopy analyses were applied to worn surfaces.

The Mechanical Properties and Wear Resistance of HVOF Sprayed WC-Co Coatings