Ren Haodong, Tian Chenyun, Shen Hong
Opt Lett. 2024 Apr 1;49(7):1717-1720. doi: 10.1364/OL.520150.
A novel, to our knowledge, method is proposed for the welding of glass and metal with a large gap filled with solder paste using ultrafast laser bursts. The addition of solder paste enables a reliable glass-metal connection even at gaps of hundreds of microns, while the position of the glass can be flexibly adjusted. By ultrafast laser bursts, the volume of the molten pool increases significantly, and the height of the molten pool reaches approximately 350 µm, which is more than an order of magnitude higher than that of conventional ultrafast lasers (10-20 µm). Cross-sectional analysis of the welded region shows that extensive material mixing and element diffusion occur, and stable connections are achieved at multiple interfaces. An analysis of the interaction between the ultrafast laser bursts and the material, as well as the mixing of multiple materials during the welding process, leads to a clear welding mechanism.
据我们所知，一种新颖的方法被提出来用于玻璃与金属的焊接，该方法使用超快激光脉冲，在填充有焊膏的大间隙中进行焊接。添加焊膏即使在数百微米的间隙下也能实现可靠的玻璃-金属连接，同时玻璃的位置可以灵活调整。通过超快激光脉冲，熔池体积显著增加，熔池高度达到约350微米，这比传统超快激光的熔池高度（10 - 20微米）高出一个多数量级。焊接区域的横截面分析表明，发生了广泛的材料混合和元素扩散，并且在多个界面处实现了稳定连接。对超快激光脉冲与材料之间的相互作用以及焊接过程中多种材料的混合进行分析，得出了清晰的焊接机理。
