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以钨酸盐和钴盐为原料，采用化学沉淀法制备出了分散性好的钨-钴化合物超细粉末。以该粉末为原料，在Ｈ２和 含碳气体条件下，采用低温连续还原碳化工艺制备出了平均粒度为０．１ｕｍ左右、主相含量为ＷＣ－２３％Ｃ０（以质量计，下同）且游离碳少于０．１％的ＷＣ－Ｃｏ复台粉未。借助ＴＥＭ， ＸＲＤ和化学分析等手段研究了粉末的粒度和化学组成，探讨了影响Ｗ－Ｃｏ化合物粉末和超细ＷＣ－Ｃｏ复合粉末制备的关键工艺参数。
Using tungstate and cobalt salt as raw materials, ultrafine tungsten-cobalt compounds with good dispersibility were prepared by chemical precipitation method. Using the powder as a raw material, an average particle size of about 0.1 μm and a main phase content of WC-23% C0 (by mass, the same below) are prepared by using a low-temperature continuous reduction and carbonization process under the condition of H2 and a carbon- WC-Co compound with less than 0.1% free carbon. The particle size and chemical composition of the powders were studied by means of TEM, XRD and chemical analysis. The key process parameters influencing the preparation of W-Co compound powders and ultra-fine WC-Co composite powders were discussed.