Abstract:In order to decrease the material and manufactural cost of the HVOF sprayed cermet coating, to replace the EHC in wider fields, five cermet composite coatings were deposited by HVOF process using the blended Ni60 and WC-10Co4Cr powders with different ratios. Microstructure, properties and sliding wear performance of the Ni60/WC-10Co4Cr coatings as well as electrolytic hard chrome (EHC) coating were investigated. The results showed that all the HVOF sprayed coatings were compact (porosities were less than 1%), their hardness increased from 688.3HV0.3 to 1203.4 HV0.3 and the wear rate decreased from 2.75×10-5 mm3/N·m to 7.29×10-7 mm3/N·m with increasing the WC-10Co4Cr ratio. The wear rates of the HVOF sprayed coatings and their counterparts as well as their frictional coefficient were lower in comparison to the EHC coating, which exhibited excellent sliding wear performance.