异种材料连接中表面预处理及对接头强度影响的研究进展

摘要

This paper reviews the research status of surface pretreatment and the effects of surface state on joint strength in dissimilar materials joining. Some conclusions are as follows: 1 ) Depositing an active metal can form well solid solubility with the base material or the filler metal in dissimilar materials joining, which can enhance the interface reaction and improve the joint strength; 2 ) The activity of surface elements is promoted and the diffusion ability is enlarged, the hard brittle phase in the joint is reduced and the joint strength is improved by perfecting the physical, chemical or mechanical properties of the base material.%综述了异种材料连接中表面预处理及表面状态对接头强度影响的研究，认为：1)在异种材料连接时，在母材表面沉积一层与母材或钎料之间具有良好固溶度的活性金属，能增强异种材料之间的界面反应，提高接头强度；2)通过改善母材表面的物理、化学或力学性能，可提高母材表层元素的活性，增加扩散能力，减少接头中的脆性相，从而提高接头强度。