Xiangkui Zhou1, Kai Wang1, Zhifeng Xu1, Qiang Wang2, Guojian Li1,, Jicheng He1,
CMC-Computers, Materials & Continua, Vol.41, No.2, pp. 153-162, 2014, DOI:10.3970/cmc.2014.041.153
Abstract At present, the functionally gradient cemented carbide (FGCC) substrate with enrich cobalt on surface is mainly formed from medium grained WC grains. In order to further improve the properties of gradient cemented carbides, the ultrafine powder was chosen in this study and the functionally gradient cemented carbide with ultrafine grains was prepared by a two-step process, where the cemented carbide is first lower pressure pre-sintered and then subjected to a gradient sintering. The results show that it is possible to form gradient layer with enriched cobalt on surface by this method and also the grain growth can be inhibited by… More >
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