电焊机2024，Vol.54Issue(6)：7-12,6.DOI:10.7512/j.issn.1001-2303.2024.06.02
原位合成AgCuSnTi钎料原位反应过程研究
Study on the In-situ Reaction Process of AgCuSnTi Brazing Filler Metal Synthesized In-situ
摘要
Abstract
To investigate the in-situ reaction process of AgCuSn-based active brazing materials,this experiment mechani-cally mixed elemental powders of Ag,Cu,Sn,and Ti in various mass fraction ratios,with an appropriate amount of binder and water to form a brazing paste,which was then heated to different temperatures and maintained.The microstructure of the brazing material was characterized using Scanning Electron Microscopy(SEM)and Energy Dispersive Spectroscopy(EDS),and the in-situ reaction process was explored based on thermodynamic theory and diffusion theory.The results indi-cate that the in-situ reaction mainly occurs in three stages.In the first stage,the melting of Sn leads to the formation of bi-nary intermetallic compounds Cu6Sn5 and Cu3Sn within the brazing material.In the second stage,at approximately 650℃to 750℃,the brazing material begins to alloy,forming a ring-layered diffusion layer around the Ti metal powder,composed of CuTi binary intermetallic compounds.In the third stage,at around 850℃,the brazing material fully alloys,making full con-tact with the graphite substrate and forming a metallurgical bond.关键词
AgCuSnTi四元钎料/原位反应/显微组织/冶金结合Key words
AgCuSnTi quaternary brazing material/in-situ reaction/microstructure/metallurgical bond分类
矿业与冶金引用本文复制引用
赵亦嘉,纠永涛,尹慧明,张雷..原位合成AgCuSnTi钎料原位反应过程研究[J].电焊机,2024,54(6):7-12,6.基金项目
国家重点研发计划(2021YFB3401100) （2021YFB3401100）
