摘要
介绍了作者发明的一种新型的液体金属和合金的雾化制粉方法 ,即采用含有固体盐 (Na Cl)颗粒的高速气流对液体金属或合金进行雾化得到粉末的方法 (简称为固体雾化法 )。通过对几种金属和合金粉末制备工艺的研究得到如下结论 :在同等气体压力和流量条件下 ,采用含有固体盐颗粒的高速气流雾化金属熔体制得的粉末比不含固体盐颗粒的高速气流雾化制得的粉末的粒度细得多 ,而且粉末粒度分布较窄 ,粉末冷却速度较大。采用固体盐雾化法制备金属粉末时 ,盐的流率愈大、流速愈快、粒度愈细 ,则雾化制得的粉末粒愈细。
A novel metal and alloy powder production technology is developed in which high velocity jet gas stream rich in solid salt particles is used to disintegrate molten metal and alloy stream into droplets to obtain powder.The technology is briefly termed as solid atomization technology.A serials of experimental investigation have shown that in contrast to conventional gas atomization technology by high velocity jet stream of gas,the finer powder with narrower particle size distribution can be obtained by the new developed technology under the same process parameters conditions,the cooling rate of the particles is higher.Particle size of the powder is obviously affected by the state of the salt particles in high velocity gas stream.The higher the relative amount of the salt powder in the jet gas stream,the higher the velocity of the salt particles,thefinerthe size ofthe saltparticles,the finer the particle size of the as-prepared powder is.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第4期30-34,38,共6页
Journal of Hunan University:Natural Sciences
