COLLISION　COARSENING　OF　DISPERSION　DROPLETS　IN　SOLIDIFICATION　PROCESS　OF　MONOTECTIC　ALLOY

来源期刊：中国有色金属学报(英文版)1995年第2期

论文作者：Zhao Jiuzhou Guo Jingjie Jia Jun Li Qingchun

文章页码：85 - 87

Key words：Zn-Pb alloy ;solidification ;collision coarsening

Abstract: A synthetical mathematic model describing the collision coarsening of the dispersion droplets in the solidification process of monotectic alloys has been put forward. Numerical simulation has been carried out for Zn-pb alloy. It was found that when the average droplet radius is smaller than 1 μm, Brownian ripening plays important role and the influence of gravity level on the coarsening rate of droplet is very weak. Otherwise, gravitational and Marangoni coagulations are the main factors of collision coarsening.