铸造2025，Vol.74Issue(12)：1573-1580,8.
Zn中间层下铜/铝双金属固-液复合工艺研究
Study on Solid-Liquid Composite Process of Copper/Aluminum Bimetal with Zn Intermediate Layer
摘要
Abstract
The copper/aluminum composite materials were prepared by solid-liquid composite method,and the surface of the copper matrix was pretreated with galvanization in advance,and the self-designed casting system was employed to significantly enhance the heat exchange between the molten aluminum and the copper matrix.The variation rules of composition and microstructure of the copper/aluminum diffusion layer were analyzed via SEM,XRD and EDS,the binding strength was measured by a universal testing machine,and the hardness distribution of the diffusion layer was analyzed by microhardness.The test results show that when the pouring temperature is 680℃,the hardness gradient of the 30 s diffusion layer of the Zn intermediate layer decreases gradually,and the binding strength gradually increases with the increase of the thickness of the Zn intermediate layer,and the porosity in the diffusion layer decreases.The galvanizing treatment on the surface of the copper matrix effectively improves the wettability of the molten aluminum on the surface of the copper matrix,and promotes the diffusion of copper atoms in the molten aluminum,and the diffusion layer is composed of Cu-Al intermetallic compounds.关键词
铜/铝复合/强化换热/镀锌/扩散层Key words
copper/aluminum composite/enhanced heat exchange/galvanize/diffusion layer分类
矿业与冶金引用本文复制引用
马涛,王力,张强,刘政楠,张达..Zn中间层下铜/铝双金属固-液复合工艺研究[J].铸造,2025,74(12):1573-1580,8.基金项目
黑龙江省省属高等学校基本科研业务费项目(2022-KYYWF-0584). （2022-KYYWF-0584）
