CAJ | 학술논문

采用射频(RF)感应等离子体球化颗粒形状不规则的Ti颗粒.研究了加料速率、物料分散方式、Ti颗粒大小等因素对球化率的影响.电子扫描显微镜(SEM)观察的球化效果以及对钛粉振实密度的测定表明:当钛原粉以极短暂时间快速穿越等离子体炬时,钛粉颗粒因受热而熔化成液滴,快速冷却,形成球形固态颗粒.
채용사빈(RF)감응등리자체구화과립형상불규칙적Ti과립.연구료가료속솔、물료분산방식、Ti과립대소등인소대구화솔적영향.전자소묘현미경(SEM)관찰적구화효과이급대태분진실밀도적측정표명:당태원분이겁단잠시간쾌속천월등리자체거시,태분과립인수열이용화성액적,쾌속냉각,형성구형고태과립.
Spherical titanium(Ti) particles were obtained by the process of heating irregularly shaped Ti powders under the radio frequency induction plasma (RF induction plasma) condition. The effect of feed rate, various dispersion methods and Ti particle size on the spheroidization efficiency was studied. The efficiency of the spheroidization is evaluated through the measurements of the percentage of powder spheroidized based on the electron microscopic observations and the tap density measurement of the processed powder. During the short flight of the particles in the plasma flow, of the order of a few milliseconds, the individual titanium particles of the powder are heated and melt, forming a spherical liquid droplet which upon freezing gives rise to the formation of a perfectly dense spherical solid particle. So RF induction plasma is a promising method for the preparation of spherical titanium powders with high flowability.