Microstructure evolution of the laser surface melted WC-Ni coatings exposed to cavitation erosion

Effect of 3.5 % NaCl solution with different Na2S concentrations on ultrasonic cavitation erosion behaviors of HVOF sprayed WC-Ni coatings

“…Owing to the high hardness and adjustable properties, WC-based cermet coatings are regarded as appropriate for enhancing the UCE performance of substrates in a wide range of various commercial cermet coatings [23] . The WC-based cermet coatings can be successfully fabricated by laser cladding, air plasma spraying (APS) and high-velocity oxygen-fuel (HVOF) spraying [25] , [26] , [27] , [28] , [29] . Considering the influence of decarbonization on the structure of the WC-based cermet coatings due to high temperature during spraying process, the HVOF sprayed WC-based cermet coatings with low degree of decarbonization as results of the low temperature and high spray velocity seems to be an optimized selection as the cavitation erosion-resistant coating [26] .…”