摘要
气雾化技术所制备的粉末粒度细小、球形度高、氧含量低、具有快速冷凝组织结构,具备大规模生产的能力且成本低,是目前生产高性能球形金属及合金粉末的主要方法。论述了气雾化技术的基础原理及特点,综述了气雾化用各类喷嘴结构、气体流场结构及工艺参数对粉末特性的影响,概述了新型气雾化介质和混合雾化方法等新进展,并指出了该技术由于存在缺乏理论指导、缺乏设计标准等问题,其发展滞后于金属粉末生产行业的发展。
Due to the powder obtained by which are fine, spherical and with low oxygen content, and rapid solidification microstructure, gas atomization, with its large scale production possibility and low cost, is one of the main methods for high-quality spherical metal and its alloy powders production. In this paper, the principle and characteristics of gas atomization are summarized. The effects of structures of nozzles, gas flow structure and processing variables on the characteristics of powder produced are discussed. The new devdopments such as new atomization medium and hybrid atomization methods are introduced particularly, Its problems, such as lack of systematic theory and design criterion, are also pointed out, which make its development fall behind that of metal powder industry.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2009年第3期53-57,共5页
Materials Reports
基金
国家十一五军工配套项目资助(JPPT-115-3-1057)
关键词
雾化
粉末
现状
喷嘴
atomization, powder, status, nozzle
