摘要
本文将离子注入技术用于扩散焊接焊前表面预处理,通过分析焊接接头的微观组织、成分分布和断口形貌,探讨了离子注入Ni对硬质合金扩散焊接接头强度的影响规律及其机理。研究表明:离子注入合金层的增强扩散效应能够促进焊接接合面两侧原子的相互扩散,细化接头中间层的晶粒,提高低温扩散焊接接头的强度。
Ion implantation is used for the surface treatment of samples before diffusion welding for fhe first time. Analysing the microstructure, the composition distribution and the cracking appearance, the paper investigates the influence and mechanism of Ni ion implantation on the strength of difiusion welding joint of hard metal. The results show that increasing diffusion effect of ion implantation layer can promote the atom diffusion between two sides of welding boundry, refine grains of interlayer and hence raise the bonding strength when welded at Iower temperature.
出处
《西安工业学院学报》
1990年第3期99-105,共7页
Journal of Xi'an Institute of Technology
关键词
离子注入
硬质合金
镍
焊接接头
Ion implantation
Diffusion welding
Hard metal
Surface treatment.
