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Laser-induced multiple points ignition test in Al/Ni exothermic reactive film for crack propagation control
Japanese Journal of Applied Physics ( IF 1.5 ) Pub Date : 2021-05-06 , DOI: 10.35848/1347-4065/abf39c
Kana Maekawa 1, 2 , Kenta Kodama 2 , Shugo Miyake 3 , Takahiro Namazu 2
Affiliation  

Al/Ni multilayer film shows a self-propagating exothermic reaction when a minute external shock is applied. Using the reactive film as a heat source for soldering enables us to complete the bonding process instantaneously within a second because of its fast reaction propagation. However, cracks are introduced in the reacted NiAl layer after bonding, which becomes a big problem in the viewpoint of thermal and mechanical reliability. In this study, a laser-induced multiple points ignition technique is developed, and reaction propagation characteristics and crack introducing phenomenon are investigated toward crack propagation control.



中文翻译:

用于控制裂纹扩展的 Al/Ni 放热反应膜中的激光诱导多点点火试验

当施加微小的外部冲击时,Al/Ni 多层膜显示出自蔓延的放热反应。使用反应膜作为焊接的热源,由于其快速反应传播,我们可以在一秒钟内立即完成键合过程。然而,在接合后在反应的 NiAl 层中引入裂纹,从热和机械可靠性的角度来看,这成为一个大问题。在这项研究中,开发了一种激光诱导多点点火技术,并针对裂纹扩展控制研究了反应扩展特性和裂纹引入现象。

更新日期:2021-05-06
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