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中文摘要：
采用经球磨扁平化处理的W粉末为原料,添加适量Co、C（碳黑）、成型剂及纳米W粉制备板状晶硬质合金,研究了烧结温度、时间和添加纳米W粉,对板状晶硬质合金显微组织结构和性能的影响。结果表明,球磨预处理中颗粒W粉末可获得扁平化程度高的薄片状W粉末,以其为原料制备的WC-12%Co（质量分数）板状晶合金相对密度达97%,合金硬度呈现出明显的各向异性;添加纳米W粉或提高烧结温度、延长烧结时间,均有利于压坯烧结收缩致密化,生成更多的板状WC晶粒。
英文摘要：
The WC-12wt%Co plate-like grain cemented carbides were prepared from plate-like W＋Co＋C（carbon black） base mixed powders. Effects of addition of nanometer tungsten powders and sintering processes on the microstructures and properties of the plate-like grain cemented carbides were researched. Results show that the relative density of the WC-12wt%Co plate-like WC grain cemented carbides is of nearly complete densification, reaching 97%. The hardness of the alloys exhibits obvious anisotropy. Higher sintering temperature, longer sintering time or nanometer tungsten powders addition are favorable to sintering densification and the formation of more plate-like WC grains.
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