Cemented carbide materials possessing a favourable combination of high hardness, reasonable fracture toughness and high wear resistance Recent progress in hardmetals is based on refinement of the WC phase and
manufacture of ultrafine and nanoscale composites possessing superior combinations of mechanical properties. In the boronizing of cemented carbides, in order to improve wear resistance, is there a relationship between the grain size and the depth and hardness of the layer ?