摘要
为研究仲钨酸铵煅烧温度对金属W粉性能的影响,在不同的相变温度下煅烧仲钨酸铵获得煅烧产物,在还原炉中还原成W粉。用扫描电镜(SEM)对不同W粉显微形貌进行观察和分析,用激光粒度分析仪对还原后的W粉进行粒度分布分析。结果表明:仲钨酸铵煅烧温度对金属W粉的性能有显著的影响,在425℃的温度下获得的煅烧产物所生产的W粉具有粒度均匀、分散性好的特点。
The calcined products were obtained by calcining ammonium paratungstate（APT） at different phase transition temperatures and then reduced to tungsten powder under hydrogen atmosphere in reducing furnace.The micro-morphology and particle size distribution of the reduced tungsten powder were analyzed by scanning electron microscope（SEM） and laser granulometer,respectively.The results show that the calcination temperature for APT has a great effect on the tungsten powder properties.The tungsten powder with uniform particle size and good dispersity can be obtained at the calcination temperature of 425 ℃.
出处
《粉末冶金材料科学与工程》
EI
2010年第6期656-660,共5页
Materials Science and Engineering of Powder Metallurgy
基金
国家科技重大专项(2009ZX04012-032)
关键词
仲钨酸铵
煅烧温度
氧化钨
还原W粉
ammonium paratungstate
calcination temperature
tungsten oxide
reduced tungsten powder
