Effect of current density on distribution coefficient of solute at solid-liquid interface
来源期刊：中国有色金属学报(英文版)2003年第1期
论文作者：常国威 王自东 吴春京 胡汉起
文章页码：131 - 134
Key words：solidification of metals; distribution coefficient; current density; rate of crystal growth; solid-liquid interface energy; radius of curvature at dendritic tip
Abstract: When current passes through the solid-liquid interface, the growth rate of crystal, solid-liquid interface energy and radius of curvature at dendritic tip will change. Based on this fact, the theoretical relation between the distribution of solute at solid-liquid interface and current density was established, and the effect of current on the distribution coefficient of solute through effecting the rate of crystal growth, the solid-liquid interface energy and the radius of curvature at the dendritic tip was discussed. The results show that as the current density increases, the distribution coefficient of solute tends to rise in a whole, and when the former is larger than about 400A/cm2, the latter varies significantly.
