摘要
纳米多层膜由于尺寸效应,存在熔点降低现象,应用于温度敏感材料的连接具有明显优势。同时由于多层膜层剧烈而快速的自蔓延放热反应,应用于连接时可以提供巨大热量。一方面可作为中间层辅助钎焊或扩散焊接;另一方面可作为独立热源为连接提供热量。纳米多层膜反应过程的实时观察受到单镜头拍摄速度和测量精度等条件的限制,而分子动力学模拟的应用为纳米多层膜反应机理研究拓展了新的思路。
Due to the size effect,nano-multilayer films have a melting point depression effect,which has obvious advantages for the joining of temperature-sensitive materials.At the same time,the violent and rapid exothermal reaction between the nano-multilayer films provides a huge heat for the materials joining process.Therefore,when the nanomultilayer film is applied for joining,it can serve in brazing or diffusion bonding as an auxiliary interlayer layer,and on the other hand,it can serve as an independent heat source to provide heat for the SHS joining.The real-time observation of the reaction process of nanomultilayer films is limited by the conditions of single lens shooting speed and measurement accuracy.In addition,the application of molecular dynamics simulation has opened up new ideas for the research of nanomultilayer film reaction mechanism.
作者
李红
许保珍
侯金保
邢增程
刘璇
胡安明
TILLMANN Wolfgang
LI Hong;XU Baozhen;HOU Jinbao;XING Zengcheng;LIU Xuan;HU Anming(College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China;AVIC Manufacturing Technology Institute,Beijing 100024,China;Institute of Laser Engineering,Beijing University of Technology,Beijing 100124,China;Dortmund University of Technology,Dortmund 44227,Germany)
出处
《航空制造技术》
2019年第12期14-21,共8页
Aeronautical Manufacturing Technology
基金
国家自然科学基金(51475007)
北京市自然科学基金(3172006)
2019科技创新服务能力建设(PXM2019_014204_500032)
关键词
纳米多层膜
自蔓延
连接
尺寸效应
分子动力学模拟
Nano-multilayer film
Self-propagation
Joining
Size effect
Molecular dynamics simulation
