涡流热电耦合制备铜硅合金  

Preparation of copper-silicon alloy by eddy current thermoelectric coupling

作　　者：张富海 张廷安 豆志河 韩金儒 李丙奇 Zhang Fuhai;Zhang Ting'an;Dou Zhihe;Han Jinru;Li Bingqi(School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,沈阳110819

出　　处：《材料与冶金学报》2025年第2期146-153,共8页Journal of Materials and Metallurgy

基　　金：国家自然科学基金项目(51774078,U1908225)。

摘　　要：铜硅中间合金是制备硅青铜的重要原料,但传统用于制备铜硅中间合金的工艺流程长且成本高.本文中提出了一种以纯铜块、SiO_(2)和镁粉为原料,连续可控镁热还原制备CuSi中间合金的新工艺,分析了不同配镁系数对合金成分及渣金分离效果的影响,并采用质量作用浓度模型研究了Cu-Si-Mg-O体系在1600℃时的相平衡组成.结果表明:合金成分随配镁系数增加的变化趋势与实验结果基本一致;当配镁系数为130%时,所制备的合金中w(Cu)为77.04%,w(Si)为20.18%;所制备合金由Cu_(3)Si相、Si相和CuO夹杂相组成,合金基体为Cu_(3)Si相,第二相为Si相.该工艺可为铜基中间合金的制备提供一种更有效的途径.CuSi intermediate alloy is an important raw material for the preparation of silicon bronze,but the traditional process for the preparation of CuSi intermediate alloy is long and costly.A new process for the preparation of CuSi intermediate alloys by continuous controlled magnesium thermal reduction with pure copper,SiO_(2),and magnesium powder as raw materials has been investigated.The effects of different Magnesium addition coefficients on the alloy compositions and slag-gold separation have been analyzed,and the phase equilibrium compositions of the Cu-Si-Mg-O system at 1600℃have been investigated by mass-action-concentration model.The results show that the trend of alloy composition with the increase of the Mg-allocation coefficient is basically consistent with the experimental results.The mass fraction of Cu in the prepared alloy is 77.04%and the mass fraction of Si is 20.18%when the Magnesium addition coefficient is 130%.The prepared alloy is the Cu_(3)Si phase,and the second phase is the Si phase.This method is expected to provide a more effective way for the preparation of copper-based intermediate alloys.

关 键 词：镁热还原 涡流搅拌 质量作用浓度模型 CuSi合金 

分 类 号：TG27[金属学及工艺—铸造]