化学共还原制备钨铜复合粉末工艺研究

Preparation of tungsten copper composite powder by Chemical Co reduction

以钨酸铵和硝酸铜为原料,采用湿化学合成法-沉淀共还原法制备了粒度小,形貌规则的W-Cu复合粉体。研究影响复合粉末形态的工艺参数。用扫描电子显微镜,X射线衍射仪和激光粒度分析仪对粉末的形貌,组成和粒径进行了表征。结果表明,在一定条件下,化学合成法制备的复合粉体-沉淀共还原法制备的复合粉体晶粒细小,形态规则,多边形均匀。

W-Cu composite powders with small particle size and regular morphology were prepared by wet chemical synthesis precipitation coprecipitation method using ammonium tungstate and copper nitrate as raw materials.The process parameters affecting the morphology of composite powder are studied.The morphology,composition and particle size of the powders were characterized by scanning electron microscopy,X ray diffractometer and laser particle size analyzer.The results show that,under certain conditions,the composite powders prepared by the chemical synthesis method of the composite powder precipitation co reduction method are fine,the morphology is regular,and the polygon is uniform.