Impurity phases and their removal in Si purification with Al–Si alloy using transition metals as additives
Impurity phases and their removal in Si purification with Al–Si alloy using transition metals as additives
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以过渡金属为添加剂的铝硅合金提纯硅中的杂质相及其去除
DOI：
10.1016/j.jallcom.2017.10.292
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发表时间：
2018-02
影响因子：
6.2
通讯作者：
Morita Kazuki
中科院分区：
文献类型：
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作者：
Lei Yun;Ma Wenhui;Wu Jijun;Wei Kuixian;Li Shaoyuan;Morita Kazuki
In order to discuss the effects of transition metals such as Zr, Hf, and Ti on the removal of impurities (B, P, Fe, Al, Ca, Ti, V, Cu, Ni, Mn, Zr, and Hf) in the purification of metallurgical-grade Si (MG-Si) with Al–Si alloy, the impurity phases formed after solidification were investigated by electron probe microanalysis (EPMA) and their removal by acid leaching was performed. EPMA investigation showed that β-Al5FeSi was the main impurity phase aside from Al in the sample without additives. However, after adding Zr, Hf, or Ti, theZrSi2,HfSi2, orTiSi2compounddissolved in small amounts of Al was the most observed phase besides β-Al5FeSi and Al. Impurities such as V, Ni, and Mn were more likely to coexist with β-Al5FeSi when Hf or Zr was employed as the impurity getter. However, V preferentially coexisted withTiSi2when Ti was added. The leaching results showed that the addition of Zr, Hf, or Ti significantly enhanced the extraction of B and slightly enhanced that of other impurities. The added Zr, Hf, and Ti were eliminated efficiently with the other impurities, reaching extraction ratios of 99.998%, 99.9994%, and 99.997%, respectively.
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影响因子：
4.7
作者：
Lai Hui-xian;Huang Liu-qing;Lu Cheng-hao;Fang Ming;Ma Wen-hui;Xing Peng-fei;Li Jin-tang;Luo Xue-tao
通讯作者：
Luo Xue-tao
DOI：
10.1361/105497100770340101
发表时间：
1993-02
期刊：
Journal of Phase Equilibria
影响因子：
--
作者：
H. Okamoto
通讯作者：
H. Okamoto
影响因子：
8.6
作者：
H. Morito;M. Uchikoshi;H. Yamane
通讯作者：
H. Morito;M. Uchikoshi;H. Yamane
影响因子：
1.4
作者：
V. Witusiewicz;F. Sommer;E. Mittemeijer
通讯作者：
V. Witusiewicz;F. Sommer;E. Mittemeijer
DOI：
10.1007/bf02898272
发表时间：
1990-10
期刊：
Journal of Phase Equilibria
影响因子：
--
作者：
H. Okamoto
通讯作者：
H. Okamoto