کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1635764 1516947 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Redistribution of iron during directional solidification of metallurgical-grade silicon at low growth rate
ترجمه فارسی عنوان
توزیع مجدد آهن در طی انقباض جهت سیلیکن با درجه حرارت پایین
کلمات کلیدی
جهت انجماد سیلیکون درجه بندی متالورژی، توزیع مجدد، اهن، مرز دانه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Redistribution of iron during directional solidification of metallurgical-grade silicon (MG-Si) was conducted at low growth rate. Concentrations of iron were examined by ICP-MS and figured in solid and liquid phases, at grain boundary and in growth direction. Concentrations are significantly different between solid and liquid phases. The thickness of the solute boundary layer is about 4 mm verified by mass balance law, and the effective distribution coefficient is 2.98×10−4. Iron element easily segregates at grain boundary at low growth rate. In growth direction, concentrations are almost constant until 86% ingot height, and they do not meet the Scheil equation completely, which is caused by the low growth rate. The effect of convection on the redistribution of iron was discussed in detail. Especially, the “dead zone” of convection plays an important role in the iron redistribution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 26, Issue 3, March 2016, Pages 859-864
نویسندگان
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