河南科技大学学报（自然科学版）2024，Vol.45Issue(4)：23-29,7.DOI:10.15926/j.cnki.issn1672-6871.2024.04.004
Ni镀层对Cu/Al钎焊接头界面组织与力学性能的影响
Effect of Ni-P Coating on Microstructure and Mechanical Properties of Cu/AI Brazed Joints
摘要
Abstract
To investigate the effect of Ni-P coating on the interfacial reactions in Cu/Al dissimilar metal brazing,a chemical plating method was employed to nickel plate T2 copper,followed by brazing of the Cu/Al joints using the induction brazing technique with BA188Si flux-cored filler metal.Scanning electron microscopy and electron backscatter diffraction were utilized for microstructural observation and phase analysis of the joints.Mechanical testing was performed to analyze the influence of the coating on the microstructure and mechanical properties of the Cu/Al joints,while also exploring the interface formation mechanism of different brazing joints during the brazing process.The results reveal the formation of intermetallic compounds Cu9Al4 and CuA12 at the interface of uncoated joints,whereas intermetallic compounds Al2Ni and Al3Ni are formed at the interface of the coated joints.The tensile strength of uncoated joints reaches to 56.4 MPa,outperforming that of coated joints.Brittle fractures occurre in all joints,with the fracture location transitioning from the interface of CuAl2 and the a-Al solid solution in uncoated joints to the Al3Ni intermetallic compound in coated joints.关键词
Cu/Al异种金属/Ni-P镀层/金属间化合物/微观组织/力学性能Key words
Cu/Al dissimilar metals/Ni-P coating/intermetallic compounds/microstructure/mechanical property分类
矿业与冶金引用本文复制引用
张学智,黄玲玲,李云鹏,于卓立,曹新娜,宋路阳,安鹏涛,魏世忠..Ni镀层对Cu/Al钎焊接头界面组织与力学性能的影响[J].河南科技大学学报（自然科学版）,2024,45(4):23-29,7.基金项目
国家自然科学基金项目(U2341258) （U2341258）
河南省科技厅自然科学基金项目(232300420088) （232300420088）
河南省科技攻关计划(222103810032) （222103810032）
