Microstructure and sliding wear behavior of thermal spray carbide coatings

High Velocity Oxygen fuel coatings were produced using powders with differe nt chemical compositions, and the microstructure, hardness and sliding wear behavior studied with reference to the characteristics of the starting pow ders. fire microstructures of the coatings and the powders were investigate d using scanning electron microscopy and X-ray diffraction, Room temperatur e dry sliding wear tests were performed using the block-on-ring test Wear b ehavior of the coatings lj understood in relation to the applied load, slid ing speed and wear surface damage.