本发明提供了一种多面体钨粉的制备方法,本方法将钨酸铵与氯化钠在水中混合均匀,搅拌蒸干,再将所得混合粉末置于管式炉中,先在氩气气氛下高温煅烧,使钨酸铵分解为三氧化钨,接着在氢气气氛下将其升至更高温度而还原制得多面体钨粉。本发明所用工艺简单、高效,所制得的钨粉为具有微米粒径的六面体或十二面体,可以广泛应用于阴极发射材料、地质采矿工具、石油钻头、硬质耐磨材料等方面,是制备其他钨基材料的重要原料。

The present invention provides a method for preparing polyhedral tungsten powder, which combines ammonium tungstate with sodium chloride in water, stirs els, and then places the resulting mixed powder in a tubular furnace, calcined at high temperature in an argon atmosphere, decomposes ammonium into tungsten trioxide, and then reduces to make a polyhedral tungsten powder in a hydrogen atmosphere. The process used in the present invention is simple and efficient, and the tungsten powder made is a hexahedral or dodecahedral with micron particle size, which can be widely used in cathode emission materials, geological mining tools, oil drilling bits, hard abrasion-resistant materials, and is an important raw material for preparing other tungsten-based materials.