仲钨酸铵形貌和粒度分布对钨粉压坯强度的影响  

The Effects of Ammonium Paratungstate Morphology and Particle Size Distribution on the Strength of Tungsten Powder Compacts

作　　者：王文华 谢中华 陈树茂 张秋和 江应国 

机构地区：[1]赣州华茂钨材料有限公司,江西赣州341000

出　　处：《中国钨业》2013年第2期38-40,共3页China Tungsten Industry

摘　　要：压坯强度主要来自颗粒表面不规则的机械啮合,颗粒形状是影响压坯强度的最重要因素之一。原料对粉末颗粒形状具有非常大的影响。在采用仲钨酸铵一步还原法生产高压坯强度钨粉过程中,不同特性原料在相同工艺生产的情况下,压坯强度差异非常大。通过实验总结出了生产高压坯强度钨粉的仲钨酸铵特点。The strength of tungsten powder compacts mainly results from particles of irregular surface for particle shape is one of the most important factors affecting strength of tungsten powder compacts. Ammonium paratungstate has great influence on the tungsten powder particle shape. The compact strength varies greatly under the same process and raw materials with different properties while producing high compact performance tungsten powder using ammonium paratungstate one step reduction. The features of ammonium paratungstate for producing high compact nerformance tungsten powder are summarized by the experiments.

关 键 词：仲钨酸铵 压坯强度 粒度分布 形貌 

分 类 号：TF125.2[冶金工程—粉末冶金]