Numerical study of the influence of different types of magnetic fields on the interface shape in directional solidification of multi-crystalline silicon ingots

被引：21
作者：
Tanasie, C. [1 ]
Vizman, D. [1 ]
Friedrich, J. [2 ]
机构：
[1] W Univ Timisoara, Fac Phys, Timisoara 300223, Romania
[2] Fraunhofer Inst IISB Erlangen, Dept Crystal Growth, D-91058 Erlangen, Germany
来源：
JOURNAL OF CRYSTAL GROWTH | 2011年 / 318卷 / 01期
关键词：
Computer simulation; Fluid flow; Ingot casting method; Multi-crystalline silicon; AL-SI ALLOYS; MELT FLOW; SIMULATION; GROWTH; TEMPERATURE; CARBON;
D O I：
10.1016/j.jcrysgro.2010.11.034
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Numerical simulations were carried out in order to study the effect of various types of magnetic fields (steady vertical and horizontal magnetic fields and a combination of a steady field and DC electric current) on melt convection and interface shape during directional solidification of multi-crystalline silicon ingots. It is shown that steady magnetic fields can decrease the interface deflection. The electromagnetic field produced by the combination of DC current through the melt and a steady magnetic field can produce a stirring effect in the melt for a relatively small value of magnetic field and electrical current. Consequently, a more uniform distribution of dopants and impurities can be obtained in the silicon crystals. The melt rotation rate can be easily controlled by the intensity of the electrical current. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：293 / 297
页数：5
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