微细CuSnAg合金粉末的制备及粉末粒度控制  

PREPARATION PARTICLE SIZE CONTROL OF FINE POWDER OF CuSnAg ALLOY

作　　者：郭屹宾[1] 陈仕奇[1] 逯峙[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《粉末冶金工业》2008年第6期5-9,共5页Powder Metallurgy Industry

摘　　要：CuSnAg合金粉末是一种新型的金刚石工具用钎焊粉末。粒度微细、氧含量低是获得良好钎焊性能的保证。本文以紧耦合气体雾化技术对这一粉末进行研制,分别研究了导液管伸出量、雾化气压对粉末的平均粒度与微细粉末收得率的影响。发现导液管的伸出量对雾化效果影响显著,采用较短的伸出量可以提高微细粉末的收得率;而雾化气压的提高可以进一步细化粉末;同时分析表明采用紧耦合雾化的粉末氧含量为0.02%,粉末的形貌呈球形。本文还从理论上分析了导液管的伸出量和雾化压力对雾化的影响机理。CuSnAg alloy powder is a new type of brazing powder used for diamond tools.Fine particle size,low oxygen content can afford the good brazing performance.The close-coupled gas atomization technology was used to prepare the powder.The effects of the protrusion length of the melt delivery tube and the atomization gas pressure on the average particle size and fine powder yield were studied.The results show that the protrusion length of the melt delivery tube has significant effect on atomization.The melt delive...

关 键 词：微细粉末 紧耦合雾化 导液管 粒度控制 

分 类 号：TF123.7[冶金工程—粉末冶金]