| 摘要: |
| 微连接和纳连接是微/纳级机械、电子和医疗等器件或系统结构制造的关键技术,综述其最新研究进展.针对电子封装,阐述无铅钎料的研制现状和铜引线键合新技术.针对医疗器件和铋系超导带材,分别介绍细丝、薄片连接的典型方法如微电阻焊、微激光焊和钎焊以及一步法扩散焊.对于碳纳米管,介绍电子束辐照连接、双壁碳纳米管薄膜卷覆法连接及钎焊.对于纳米金属颗粒,介绍飞秒激光辐照实现连接.最后,重点阐述了微-纳米Ag,Ag-Cu,Cu以及Ag2O颗粒膏低温烧结连接及其在电子封装中的可能应用. |
| 关键词: 微连接 纳连接 医疗器件 电子器件 纳米颗粒 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金面上和重点项目(51075232,50635050);清华大学自主科研计划项目(2010THZ02-1) |
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| Recent progress in microjoining and nanojoining |
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ZOU Guisheng1, YAN Jianfeng1, MU Fengwen1, WU Aiping1, ZHOU Y Norman2
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1.Department of Mechanical Engineering, Key Laboratory for Advanced Materials Processing Technology, Ministry of Education of China, Tsinghua University, Beijing 100084, China;2.Department of Mechanical and Mechatronics Engineering, University of Waterloo, Ontario N2L 3G1, Canada
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| Abstract: |
| Micro-joining and nano-joining have been identified as the key technologies in the construct fabrication such as micro-and nano-mechanical,electronic and medical devices and systems,and their recent progresses are briefly reviewed in this article.For electronic packaging applications,the developed lead-free solders and the two-step loading procedure accompanied with a superimposed ultrasound for copper-wire-bonding were expounded.Typical joining methods including resistance micro-welding,laser micro-welding and brazing for similar and dissimilar wires or pieces used for medical devices were discussed,as well as one-step diffusion bonding with pressing at high temperature for Bi-Sr-Ca-Cu-O superconductive leads.Joining technologies were also introduced,including electron beam irradiating welding,strand wrapping bonding with Double-walled Carbon Nanotube Strands(DWNT) film and brazing,the welding technologies of metal nanoparticles realized through laser irradiation,and the novel process of low-temperature sintering bonding by using Ag,Cu,Ag-Cu and Ag2O micro/nano-particle pastes for electronic packaging applications.Based on the existing and new processes,the challenges and outlooks in micro-and nano-joining were pointed out. |
| Key words: microjoining nanojoining medical device electronics nanoparticle |
