The mechanism of the welding between silica glass and 304 stainless steel using nanosecond fibre laser
The mechanism of the welding between silica glass and 304 stainless steel using nanosecond fibre laser
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DOI：
10.1080/13621718.2023.2167568
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发表时间：
2023-01
影响因子：
3.3
通讯作者：
Jingyu Huo;Boyuan Zhang;Chuangkai Li;Minghuo Luo;Tao Chen;Liang Guo;Aiping Luo;Nan Zhao;Jiaming Li;Qingmao Zhang
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文献类型：
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作者：
Jingyu Huo;Boyuan Zhang;Chuangkai Li;Minghuo Luo;Tao Chen;Liang Guo;Aiping Luo;Nan Zhao;Jiaming Li;Qingmao Zhang
由玻璃和金属组成的器件广泛应用于许多领域。随着这些器件的微型化和应用领域的扩大，对玻璃与金属之间的微连接提出了更高的要求。采用红外纳秒光纤激光器对石英玻璃和304不锈钢进行了焊接。通过改变激光参数优化了焊接质量。接头强度达到16.39MPa。研究了两种材料的焊接机理。结果表明，激光加热条件下石英玻璃与304不锈钢之间存在元素扩散，其中Fe、Cr和Si是形成焊缝的关键因素。在元素扩散过程中，Cr比Fe更容易扩散到玻璃中。在界面处观察到Fe-O-Si键。此外，增加界面Cr含量是提高接头强度的可能途径。
Devices consisting of glass and metal are widely applied to many fields. With the miniaturisation and the expansion of application fields of these devices, the requirement of micro-joining between glass and metal is becoming higher. In this work, silica glass and 304 stainless steel were welded by the infrared nanosecond fibre laser. The welding quality was optimised by varying the laser parameters. The joint strength reached 16.39 MPa. The mechanism of the welding between the two materials was investigated. The results demonstrated the elemental diffusion in the interface between silica glass and 304 stainless steel under laser heating, where Fe, Cr and Si were the crucial factors in forming the welds. During the elemental diffusion, Cr was much easier to diffuse into glass than Fe. In the interface, Fe-O-Si bonds were observed. Moreover, increasing Cr content in the interface is a probable approach to improve the joint strength.