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Possibility of Complete Collecting Eutectic Si and Primary Si as Purified Si During Al-Si Solvent Refining with Zr Additions

文献类型：期刊论文

作者Chen, Chen2,3; Li, Jingwei1; Chen, Jian3; Ban, Boyuan3
刊名SILICON
出版日期2022-04-01
关键词ZrB2 and ZrSi2 phases Primary Si Eutectic Si Leaching Refining
ISSN号1876-990X
DOI10.1007/s12633-022-01851-z
通讯作者Ban, Boyuan(banboyuan@rntek.cas.cn)
英文摘要The possibility of complete collecting eutectic Si and primary Si as purified Si during Al-Si solvent refining with Zr additions has been studied. From the ICP results, the B content in the eutectic Si is significantly higher than that in the primary Si with the low Zr addition (Zr addition <= 330 ppmw, B-max=233 ppmw). With the excessive Zr addition, the B element in the melt is more and more distributed in the ZrB2 phase (over 95% with 3000 ppmw Zr addition), which causes the B content of primary Si and eutectic Si remained low level. Through the consistency of the estimated X-ZrB2 in this work with the theoretical value, the mechanism of the high-efficiency B removal is clearly revealed. The EDS analysis shows that the ZrSi2 phase is trapped and mixed in the collected Si crystal, which caused the Zr content in the Si crystal increasing abnormally, and the subsequent HCl + HF leaching process can effectively eliminate the trapped and mixed ZrSi2 phase in the Si phase. After leaching treatment, the B and Zr contents of eutectic Si and primary Si can reach the same level. This suggests that all Si crystals in Al-Si alloy can be used as purified Si, which greatly increases the recovery ratio of Si.
WOS关键词METALLURGICAL-GRADE SILICON ; DIRECTIONAL SOLIDIFICATION ; CARBIDE FORMATION ; CRYSTAL-GROWTH ; BORON REMOVAL ; B REMOVAL ; PURIFICATION ; ALLOY ; MELT ; SEPARATION
资助项目National Natural Science Foundation of China[51804294] ; National Natural Science Foundation of China[51874272] ; National Natural Science Foundation of China[52111540265] ; Anhui Provincial Natural Science Foundation[1808085ME121] ; Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Science[PECL2021QN003] ; Hefei Institutes of Physical Science, Chinese Academy of Sciences Director's Fund[YZJJZX202018] ; International Clean Energy Talent Program by China Scholarship Council
WOS研究方向Chemistry ; Materials Science
语种英语
WOS记录号WOS:000777195200001
出版者SPRINGER
资助机构National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Science ; Hefei Institutes of Physical Science, Chinese Academy of Sciences Director's Fund ; International Clean Energy Talent Program by China Scholarship Council
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/128663]  
专题中国科学院合肥物质科学研究院
通讯作者Ban, Boyuan
作者单位1.Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Chinese Acad Sci, HFIPS, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Chen,Li, Jingwei,Chen, Jian,et al. Possibility of Complete Collecting Eutectic Si and Primary Si as Purified Si During Al-Si Solvent Refining with Zr Additions[J]. SILICON,2022.
APA Chen, Chen,Li, Jingwei,Chen, Jian,&Ban, Boyuan.(2022).Possibility of Complete Collecting Eutectic Si and Primary Si as Purified Si During Al-Si Solvent Refining with Zr Additions.SILICON.
MLA Chen, Chen,et al."Possibility of Complete Collecting Eutectic Si and Primary Si as Purified Si During Al-Si Solvent Refining with Zr Additions".SILICON (2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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