Abstract: Nanostructured cermet coating was sprayed from agglomerated nanostructured WC12Co powder feedstock by means of hypersonic spray process (HVOF). Grains of tungsten carbide nanopowder were analysed by a scanning electron microscope (SEM) and transmission electron microscope (TEM). Investigations revealed that the grains of powder consist of nanoparticles. The nanostructured sprayed coating was observed by SEM analysis and investigated X-ray diffractrometer (XRD). A denser coating structure with higher hardness compared to conventional coating with a small amount of W2C WC1-x and W phase was observed. The wear tests carried out by means of a tribological tester T-01 show higher wear resistance for the HVOLF-sprayed WC-12Co nanostructured coating.
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