添加Na_(2)HPO_(4)对高硅铝硅合金中初晶硅的细化研究  

Refinement of Primary Crystalline Silicon in High-Silicon Aluminum-Silicon Alloy by Adding Na_(2)HPO_(4)

作　　者：桂成志 张瑞丰 张亚坤 吕国强[1,2] 陈正杰 马文会[1,2,3] 杨朝红 GUI Chengzhi;ZHANG Ruifeng;ZHANG Yakun;LYU Guoqiang;CHEN Zhengjie;MA Wenhui;YANG Chaohong(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province,Kunming 650093,China;School of Engineering,Yunnan University,Kunming 650500,China;Yunnan Yuze New Energy Co.,Ltd.,Chuxiong 675000,Yunnan,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]云南省复杂有色资源清洗利用国家重点实验室,云南昆明650093 [3]云南大学现代工学院,云南昆明650500 [4]云南宇泽新能源股份有限公司,云南楚雄675000

出　　处：《昆明理工大学学报(自然科学版)》2025年第2期19-26,共8页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(22268027)。

摘　　要：为了回收利用硅废料并制备初晶硅细化的高硅铝合金,采用电磁感应炉熔炼,通过添加Na_(2)HPO_(4)对高硅铝硅合金进行变质处理.结果表明:使用纯硅纯铝合金化实验制备Al-50%Si合金时,添加1%的Na_(2)HPO_(4)晶粒细化效果最好,相较于未添加Na_(2)HPO_(4),初晶硅晶粒细化了2.786 mm,细化了56.99%;使用DWSSP和纯铝合金化实验制备Al-50%Si合金时,相较于未添加Na_(2)HPO_(4),晶粒细化56.53%,并计算得出DWSSP中硅的利用率达到82.244 2%.综合分析表明,Na_(2)HPO_(4)加入后,对Al-50%Si合金进行变质处理,达到了晶粒细化和成分分布均匀化的效果,为解决硅废料提供了思路,实现废料再利用,保护环境.In order to recycle silicon waste and prepare high-silicon aluminum alloy with primary silicon refinement,the high-silicon aluminum-silicon alloy was melted by electromagnetic induction furnace and metamorphosed by adding Na_(2)HPO_(4).The results showed that the addition of 1%Na_(2)HPO_(4) had the best grain refinement effect when the Al-50%Si alloy was prepared by pure silicon pure aluminum alloying experiment,and the grain refinement of the primary silicon was 2.786 mm and the refinement ratio was 56.99%compared with that without the addition of Na_(2)HPO_(4).When the Al-50%Si alloy was prepared by DWSSP and pure aluminum alloying experiments,the grain refinement was 56.53%compared with that without the addition of Na_(2)HPO_(4),and the utilization rate of silicon in DWSSP was 82.2442%.The comprehensive analysis shows that after adding Na_(2)HPO_(4),the modification treatment of Al-50%Si alloy can achieve grain refinement and homogenization of composition distribution,which provides ideas for solving silicon waste,realizing waste reuse and protecting the environment.

关 键 词：DWSSP 高硅铝硅合金 变质剂 初晶硅 

分 类 号：TG146.21[一般工业技术—材料科学与工程]