摘要
采用真空熔敷法在304不锈钢表面制备Cu-Ni涂层,然后以Cu-Ni涂层为中间层,扩散连接304不锈钢与6063铝合金。利用光学显微镜、SEM及EDS,研究了不锈钢/Cu-Ni涂层/铝合金接头的界面显微组织特征及成分分布。结果表明,与不锈钢母材熔合的Cu-Ni涂层中,形成了宽约4μm的Fe、Cr、Ni元素扩散带;与Cu-Ni涂层扩散结合的铝母材中则形成了两层化合物,靠近结合线的化合物层厚约1μm,主要由CuAl2和CuAl组成;远离结合线的化合物层厚约3μm,主要由CuAl2组成;没有在铝合金母材中检测到Ni原子。Al原子扩散进入Cu-Ni涂层的距离约3μm。
Diffusion bonding was carried out in vacuum between aluminum and stainless steel 304 with Cu-Ni coating prepared by vacuum deposition.The microstructure,composition distribution of the joints were studied by OM,SEM and EDS.The results show that about 4 μm diffuse band with Fe,Cr,Ni elements forms in the Cu-Ni coating for stainless steel/Cu-Ni alloying coating interface.For Cu-Ni coating/aluminum interface,about 1 μm compound layer consisting of CuAl2 and CuAl forms near the bonding line,and about 3 μm CuAl2 compound layer forms away the bonding line,but no Ni element is detected in aluminum matrix.The distance of aluminum element diffusing to Cu-Ni coating is about 3 μm.
出处
《热加工工艺》
CSCD
北大核心
2012年第6期110-112,共3页
Hot Working Technology
基金
南京工程学院大学生科技创新基金项目(N20100201)
关键词
真空熔敷
铝合金
扩散连接
涂层
vacuum deposition aluminum diffusion bonding coating Vacuum Deposition Coating for Stainless Steel/Aluminum Diffusion BondingYANG Zonghui,YU Liu,SI Chunlin（School of Material Engineering,Nanjing Institute of Technology,Nanjing 211167,China
