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Mechanism of boron removal from Si-Al melt by Ar-H-2 gas mixtures

文献类型：期刊论文

作者Li, Jing-wei; Bai, Xiao-long; Ban, Bo-yuan; He, Qiu-xiang; Chen, Jian
刊名TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
出版日期2016-11-01
卷号26期号:11页码:3046-3051
关键词Metallurgical Grade Silicon Si-al Melt Gas Blowing Boron Removal
DOI10.1016/S1003-6326(16)64435-7
文献子类Article
英文摘要A new method about purification of metallurgical grade silicon (MG-Si) by a combination of Si-Al solvent refining and gas blowing treatment was proposed. The morphologies and transformation of impurity phases, especially for boron and iron in Si-Al melt were investigated during Ar-H-2 gas blowing treatment. The mechanism of boron removal was discussed. The results indicate that gas blowing can refine grain size and increase nucleation of the primary Si. Boron can be effectively removed from MG-Si using the Ar-H2 gas blowing technique during the Si-Al solvent refining. Compared with the sample without gas blowing, the removal efficiency of boron increases from 45.83% to 74.73% after 2.5 h gas blowing. The main impurity phases containing boron are in the form of TiB2, AlB2 and VB compounds and iron-containing one is in the form of beta-Al5FeSi intermetallic compound. Part of boron combines [H] to transform into gas BxHy (BH, BH2) and diffuses towards the surface of the melt and is volatilized by Ar-H-2 gas blowing treatment under electromagnetic stirring.
WOS关键词METALLURGICAL-GRADE SILICON ; SOLAR-CELL ; SOLIDIFICATION ; PURIFICATION ; IMPURITIES ; TITANIUM ; BEHAVIOR ; IRON
WOS研究方向Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000389519700029
资助机构National Natural Science Foundation of China(51404231 ; National Natural Science Foundation of China(51404231 ; National Natural Science Foundation of China(51404231 ; National Natural Science Foundation of China(51404231 ; Anhui Provincial Natural Science Foundation, China(1508085QE81) ; Anhui Provincial Natural Science Foundation, China(1508085QE81) ; Anhui Provincial Natural Science Foundation, China(1508085QE81) ; Anhui Provincial Natural Science Foundation, China(1508085QE81) ; China Postdoctoral Science Foundation(2014M561846) ; China Postdoctoral Science Foundation(2014M561846) ; China Postdoctoral Science Foundation(2014M561846) ; China Postdoctoral Science Foundation(2014M561846) ; 100 Talent Program of Chinese Academy of Sciences(2012065) ; 100 Talent Program of Chinese Academy of Sciences(2012065) ; 100 Talent Program of Chinese Academy of Sciences(2012065) ; 100 Talent Program of Chinese Academy of Sciences(2012065) ; 51474201) ; 51474201) ; 51474201) ; 51474201) ; National Natural Science Foundation of China(51404231 ; National Natural Science Foundation of China(51404231 ; National Natural Science Foundation of China(51404231 ; National Natural Science Foundation of China(51404231 ; Anhui Provincial Natural Science Foundation, China(1508085QE81) ; Anhui Provincial Natural Science Foundation, China(1508085QE81) ; Anhui Provincial Natural Science Foundation, China(1508085QE81) ; Anhui Provincial Natural Science Foundation, China(1508085QE81) ; China Postdoctoral Science Foundation(2014M561846) ; China Postdoctoral Science Foundation(2014M561846) ; China Postdoctoral Science Foundation(2014M561846) ; China Postdoctoral Science Foundation(2014M561846) ; 100 Talent Program of Chinese Academy of Sciences(2012065) ; 100 Talent Program of Chinese Academy of Sciences(2012065) ; 100 Talent Program of Chinese Academy of Sciences(2012065) ; 100 Talent Program of Chinese Academy of Sciences(2012065) ; 51474201) ; 51474201) ; 51474201) ; 51474201)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/30252]  
专题合肥物质科学研究院_应用技术研究所
作者单位Chinese Acad Sci, Inst Appl Technol, Key Lab Novel Thin Film Solar Cells, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Li, Jing-wei,Bai, Xiao-long,Ban, Bo-yuan,et al. Mechanism of boron removal from Si-Al melt by Ar-H-2 gas mixtures[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2016,26(11):3046-3051.
APA Li, Jing-wei,Bai, Xiao-long,Ban, Bo-yuan,He, Qiu-xiang,&Chen, Jian.(2016).Mechanism of boron removal from Si-Al melt by Ar-H-2 gas mixtures.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,26(11),3046-3051.
MLA Li, Jing-wei,et al."Mechanism of boron removal from Si-Al melt by Ar-H-2 gas mixtures".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 26.11(2016):3046-3051.

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来源：合肥物质科学研究院

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