Thermal spray coatings are widely used in mechanical components to minimize the wear related problems. Now-a-days nano-materials are gaining interest among the researchers and industries due to enhanced tribological and mechanical properties. This work reports the abrasive wear behavior of high velocity oxy-fuel (HVOF) sprayed WC-CoCr nano-coatings. The two-body abrasion was obtained by sliding the samples over SiC abrasive paper bonded to a rotating flat disk of pin-on-disk tribometer. The experiments were conducted as per standard Taguchi experimental plan with L9 orthogonal array and the influence of wear test parameters has been studied by analysis of variance (ANOVA). A correlation has been obtained between the wear of coatings and wear test parameters. Mechanism of material removal in abrasive wear was studied and discussed on microstructural investigations. It was observed that fine grain WC-CoCr cermet coating exhibits higher abrasive wear resistance as compared to conventional cermet coating in all test conditions.
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