1. Effect of impurity trappers on the distribution and removal of phosphorus from Si with Si-Cu solvent
- Author
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Liuying Huang, Liuqing Huang, Abdolkarim Danaei, Xuetao Luo, Chentong Zhang, and Guangyu Chen
- Subjects
Quenching ,Materials science ,Silicon ,Mechanical Engineering ,Phosphorus ,Alloy ,Inorganic chemistry ,chemistry.chemical_element ,engineering.material ,Condensed Matter Physics ,Solvent ,chemistry ,Mechanics of Materials ,Impurity ,engineering ,General Materials Science ,Eutectic system ,Titanium - Abstract
Titanium (Ti) and calcium (Ca), as trappers, were introduced into copper-alloyed metallurgical grade silicon (MG-Si). The effects of trappers on the segregation behavior and removal efficiency of phosphorus (P) were investigated. It was found that P tended to enrich in the TiSi2 and CaCu2Si2 phases, and quenching above the eutectic temperature of Si-Cu alloy is conducive to the P removal. The corrosion process of the P-enriched phases indicated that Ca addition was in favour of P removal, while Ti addition was opposite. The results suggested that though the addition of Ti and Ca could effectively enrich P in the Si-Cu alloy, the acid sensitivity of P-enriched phases would affect the P removal. more...
- Published
- 2022
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