s p

Rapid grain growth during the early stage of sintering has been found in many nano material systems including cemented tungsten Conventional cemented tungsten carbide with tungsten talline WC–Co. The production of bulk nanocrystalline (grain sizes < 100 nm) cemented tungsten carbide, how-coarsening of nanosized particles, is an issue that affects occurs during the early stages of sintering before the liquid phase sintering temperature is reached, suggesting a rapid grain growth process in the solid state [11,12]. In fact, the grain size at the first data point of the isothermal hold experiment in a comparative study by Fang et al. of the grain growth of nanosized WC–Co with conventiona