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

doi:10.1016/S1003-6326(16)64435-7

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	Mechanism of boron removal from Si-Al melt by Ar-H-2 gas mixtures
	Li, Jing-wei; Bai, Xiao-long; Ban, Bo-yuan; He, Qiu-xiang; Chen, Jian
	2016-11-01
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
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.
文章类型	Article
关键词	Metallurgical Grade Silicon Si-al Melt Gas Blowing Boron Removal
WOS标题词	Science & Technology ; Technology
DOI	10.1016/S1003-6326(16)64435-7
关键词[WOS]	METALLURGICAL-GRADE SILICON ; SOLAR-CELL ; SOLIDIFICATION ; PURIFICATION ; IMPURITIES ; TITANIUM ; BEHAVIOR ; IRON
收录类别	SCI
语种	英语
项目资助者	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)
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000389519700029
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/30252
专题	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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