Current position: Home >> Scientific Research >> Paper Publications

Si-Al-Sn合金熔体中块体硅定向生长行为研究

Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2016-08-01

Journal: 无机材料学报

Included Journals: Scopus、CSCD、ISTIC、PKU、EI、SCIE

Volume: 31

Issue: 8

Page Number: 791-796

ISSN: 1000-324X

Key Words: Si-Al-Sn合金;定向凝固;块体硅

Abstract: 为从Si-Al-Sn合金中有效分离初晶硅,本研究提出并实现了三元合金定向生长块体硅的技术.通过考察冷却速度、合金成分、温度梯度与晶体生长速度比值(G/R)等参数及其影响机制,确定促进块体硅稳定生长的有利条件;对比Si-Al、Si-Sn二元合金体系,采用成分过冷理论分析金属Sn对三元合金中块体硅生长行为的影响;采用电子探针显微分析仪考察块体硅微观组织形貌与杂质分布.研究结果表明:定向凝固方法能有效分离块体硅,同时抑制块体硅内金属夹杂物生成,并将杂质含量控制在其固溶度范围内,成为一种有效分离、回收高纯初晶硅的新途径.

Prev One:Removal of metal impurities by controlling columnar grain growth during directional solidification process

Next One:Enhanced boron removal from metallurgical grade silicon by the slag refining method with the addition of tin