焊接科技学术动态
发布时间:2014年04月28日        点击数量:214

                                     高品质高可靠性钎料的技术发展及应用

 

                                      李 1Wolfgang Tillmann2,栗卓新1,冯宗会3,麦小波3

 (1. 北京工业大学 材料科学与工程学院,北京 100124 2. 德国多特蒙德工业大学 材料工程研究所,多特蒙德 44227 3. 浙江银轮机械股份有限公司,天台317200)

 

摘要:结合国际高品质钎焊材料的研究现状和未来发展方向,总结了新型铝基钎料、银基钎料、铁基钎料及钎焊技术的国内外最新研究进展与应用成果.AlSiCu基低熔点钎料具有较高的强度和较好的耐腐蚀性能,特别是添加微量稀土元素后能通过变质作用降低表面应力和促进界面元素扩散,适用于高强度铝合金,铝-钢,钛合金的连接.新颖的纳米多层膜低温钎料及涂层制备技术取得一系列新的研究结果,与钎焊技术相结合具有良好的应用前景;特殊的钎焊新技术,如超声波辅助钎焊、等离子-激光复合钎焊为实现无钎剂和非真空环境下材料的液相连接提供了新的解决方案.

关键词:钎焊;铝基钎料;银基钎料;铁基钎料;纳米多层膜钎料  

 

 

Development and application of high quality and high reliability brazing filler metals

 

Li Hong1, Wolfgang Tillmann2, Li Zhuoxin1, Feng Zonghui3 Mai Xiaobo3

1 College of Materials Science & Engineering, Beijing University of Technology, Beijing100124, China, 2 Dortmund University of Technology, Dortmund 44227, 3 Zhejiang Yinlun Machinery Co., Ltd, Tiantai 317200

 

Abstract

In combination with international research status and development of high quality brazing filler metals, the latest progress of new-type aluminum-based filler metals, silver-based filler metals and iron-based filler metals as well as brazing technology in China and abroad is summarized. Low-melting-point AliSiCu-based filler has high strength and good corrosion resistance, especially decreasing the surface tension and promoting element diffusion near interface after adding a small amount of rare earth elements by modification, which is suitable for brazing of high-strength aluminum alloy, aluminum- steel and titanium. In addition, novel low-temperature nano-multilayer brazing filler and coating preparation technology has made a series of new research finding. Furthermore, novel low-temperature nano-multilayer brazing filler and coating preparation technology has made a series of new research finding. Special new brazing technologies, including ultrasonic-assisted brazing, plasma-laser hybrid brazing, etc. provide new solutions to achieve liquid-phase bonding of material under fluxless and non-vacuum conditions.

Key words: brazing, Al-based filler;Ag-based filler; Fe-based filler; nano-multilayer filler