石英玻璃飞秒激光微连接及其接头性能

潘泽浩; 程战; 刘磊; 邹贵生; ZHOUYunhong

石英玻璃飞秒激光微连接及其接头性能

1.
清华大学机械工程系, 北京 100084
2.
北京航空航天大学材料加工及控制工程系, 北京 100191

基金项目: 国家自然科学基金资助项目（51375261，51405258）；北京市自然科学基金资助项目（3132020）；先进焊接与连接国家重点实验室开放课题（AWJ-M14-05）

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- 收稿日期: 2014-09-15

Microwelding of fused silica by femtosecond laser and the joint mechanical properties

1.
Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
2.
Department of Materials Processing Engineering, School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 飞秒激光的低热输入、极小热影响区的特点使其在微米尺度材料连接领域有明显的应用潜力。为研究飞秒激光进行玻璃连接的可行性及其接头性能，测定了其接头的拉剪强度并分析了接头断裂前后的形貌特征。证明了飞秒激光连接玻璃的可行性，并发现玻璃试样之间的间隙对飞溅有明显影响。拉剪试验测得的接头强度在6.4~40.4MPa之间。结果表明，在激光平均功率较大，焊缝间距较小的条件下，连接试样容易在母材中断裂，使得接头的强度相比于断裂在界面上的试样强度降低一半以上。
- 飞秒激光 /
- 微连接 /
- 石英玻璃
Abstract: Femtosecond laser is a promising tool for micro/nano joining due to its low heat input and small heat affected zone. In this paper, fused silica was welded by using femtosecond laser. The shear strength and failure modes of the joints were investigated and the joint formation was studied. The shear strengths of the glass joint were between 6.4 MPa and 40.4 MPa, depending on the welding parameters. It was found that the gap of the faying surfaces between the two glasses had significantly effect on splashing, which would lower the joint strength. The results also indicated that high average power of laser and small distance between two weld seams tended to induce cracks in the glass, which were crack initiation sites during shear test and reduced the joint strength by half, compared with the joints with no cracks.
- femtosecond laser /
- microwelding /
- fused silica

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参考文献(13)

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石英玻璃飞秒激光微连接及其接头性能

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出版历程

Microwelding of fused silica by femtosecond laser and the joint mechanical properties

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出版历程

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