Mechanism study of producing non-spherical powder in gas atomization

Gas atomization was usually regarded as a good method for producing the spherical or approximate spherical powders.We found a lot of non-spherical powders in production processes,especially in larger particle size distribution area.The causes of producing non-spherical powders are explained and some analyses are done in order to find a better condition of producing spherical powders in this paper.The following morphologies were obtained by atomized Fe50 Co50 and pure iron and investigated by scanning electron microscopy（SEM）.