真空气雾化参数对粉末粒度及形貌的影响研究

The Impact of Vacuum Atomization Parameters on the Particle Size Distribution and Morphology

对雾化压力、雾化气体温度等雾化参数对粉末粒度、形貌的影响进行了研究.试验结果表明,雾化压力在2.3～3.2MPa范围内对粉末粒度影响不大,当雾化压力超过3.5MPa时,粉末粒度开始变细小.雾化气体温度对粉末粒度影响最大,较高的雾化气体温度有利于获得较细小的粉末.

The impact of atomization parameters such as the atomizing pressure, the angle of the nozzle, the atomizing gas temperature on the particle size distribution and morphology was studied. The result shows that, Atomizing pressure had little effect on the particle size distribution within a certain range, while the powder particle size became finer when the pressure exceeded a certain value. Atomizing gas temperature had a obvious effect on the particle size distribution. It was easier to gain a finer powder with higher atomizing gas temperature. Atomizing gas temperature has little effect on the oxygen content of the powder.