姜大川
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个人信息Personal Information
副教授
硕士生导师
任职 : 青岛市青年科学家协会秘书长/中国产学研合作促进会常务理事
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：材料科学与工程学院
学科：材料学
办公地点：材料学院（知远楼）B509
电子邮箱：
Segregation and evaporation behaviors of aluminum and calcium in silicon during solidification process induced by electron beam
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论文类型：期刊论文
发表时间：2015-03-01
发表刊物：SEMICONDUCTOR SCIENCE AND TECHNOLOGY
收录刊物：Scopus、EI、SCIE
卷号：30
期号：3
ISSN号：0268-1242
关键字：electron beam melting; silicon; impurity; segregation; evaporation
摘要：An experimental investigation into the removal of aluminum (Al) and calcium (Ca) from molten silicon by using electron beam melting was carried out. Based on the distributions of Al and Ca along the growth direction of the ingot under different solidification conditions, the influence of segregation and evaporation behaviors on the removal of such impurities with both high saturated vapor pressure and low segregation coefficients was investigated. The results showed that the distributions of impurities depend upon the interaction between segregation and evaporation, so that the removal efficiency can be further improved by adjusting the melting parameters. Compared with the traditional electron beam melting process, the energy consumption decreases by 20% during the whole melting and solidification process. It is considered to be a more effective way for the purification of silicon and the reduction of energy consumption by electron beam melting.