| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 639934 | Separation and Purification Technology | 2016 | 4 Pages |
Abstract
In order to strengthen B removal during purification of Si with Al-Si solvent, small amounts (<1100Â 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.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Yun Lei, Wenhui Ma, Luen Sun, Jijun Wu, Kazuki Morita,