Hits:

Indexed by:期刊论文

Date of Publication:2010-06-01

Journal:Gongneng Cailiao/Journal of Functional Materials

Included Journals:EI、PKU、ISTIC、Scopus

Volume:41

Issue:SUPPL. 1

Page Number:144-147

ISSN No.:10019731

Abstract:Behavior of phosphorus, aluminum and calcium in metallurgical grade silicon has been investigated during electron beam melting with melting time modified. The results showed that the content of phosphorus, aluminum and calcium gradually decreased with time passing, and the lowest content of these impurities were 2.2    10-5wt% P, 8.5    10-5 wt% Al and 1.5    10-4 wt% Ca respectively. The removal rates of these elements were expressed by the first order equation. Rate constants for phosphorus, aluminum and calcium were 0.11, 0.12, 0.13 min-1 respectively.