Effects of small amounts of transition metals on boron removal during electromagnetic solidification purification of silicon with Al-Si solvent
Effects of small amounts of transition metals on boron removal during electromagnetic solidification purification of silicon with Al-Si solvent
复制标题
少量过渡金属对铝硅溶剂电磁凝固提纯硅除硼的影响
DOI：
10.1016/j.seppur.2016.02.014
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发表时间：
2016
影响因子：
8.6
通讯作者：
Morita Kazuki
中科院分区：
文献类型：
--
作者：
Lei Yun;Ma Wenhui;Sun Luen;Wu Jijun;Morita Kazuki
在Al-Si溶剂纯化Si过程中，为了加强对B的去除，采用少量（<1100 ppma）的过渡金属（Hf、Zr、Ti和Nb）作为添加剂，因为它们对B有很强的亲和力。结果表明，添加少量的Hf、Zr和Ti可以显著改善B的去除过程，并且Hf和Zr比Ti和Nb更有效地强化B的去除。Nb对B的去除没有影响。这些添加剂也可以有效地去除，因为它们的偏析系数非常小。
In order to strengthen B removal during purification of Si with Al–Si solvent, small amounts (<1100 ppma) of transition metals (Hf, Zr, Ti, and Nb) were employed as additives because of their strong affinity for B. The results showed that the B removal process can be significantly improved by adding small amounts of Hf, Zr, and Ti and that Hf and Zr are more efficient for strengthening B removal than Ti or Nb. Nb had no effect on B removal. These additives could be also efficiently removed because of their extremely small segregation coefficients.