论文名称：Influence of direct electric current on solidification process of Al-Si alloy
论文类型：期刊论文
发表刊物：MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
收录刊物：SCIE、EI、Scopus
卷号：61
页面范围：79-84
ISSN号：1369-8001
关键字：Al-Si alloy; Direct electric current; Joule heat; Convection; Boron redistribution
摘要：The effect of direct electric current on redistribution and microstructure of primary silicon in Al-Si melt during the solidification refining process was studied. Electric current generates a Joule heat, which slows down the cooling rate of the furnace. The precipitated area of primary silicon decreases from 100% to 36.67% with the increase of current density from 0 A/m(2) to 1.5x10(6) A/m(2). Furthermore, direct current causes a convection leading to the migration of primary silicon in the opposite direction of electric field, which forms the accumulation area. The morphologies of primary silicon and the redistribution of B impurity were investigated under the effect of electric current.
发表时间：2017-04-01