Chen Hao, Li Zhaoxu, Han Mingyang, Yang Xiao, Bai Shi
Hebei Key Laboratory of Materials Near-Net-Forming Technology, School of Material Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China.
Advanced Laser Processing Research Team, RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
ACS Omega. 2024 Sep 4;9(37):38878-38886. doi: 10.1021/acsomega.4c05018. eCollection 2024 Sep 17.
Ultrafast laser welding has emerged as a significant technology for the joining of transparent materials and has been extensively researched for the welding of glass materials in recent years. However, achieving a robust connection requires optical contact between the samples during laser processing, which complicates the welding process and increases its cost. To achieve high-strength welding of glass samples without optical contact, the samples are typically pressed together to minimize the gap, allowing the molten materials to completely fill it. In this study, two approaches are employed to facilitate high-strength welding of silica glasses: femtosecond (fs) laser welding with the assistance of pressure using a fixture and femtosecond laser welding aided by a water intermediate layer. The welding quality achieved by both methods is thoroughly examined and compared. The findings reveal that femtosecond laser welding with water assistance outperforms other methods in terms of welding uniformity and quality. Furthermore, the principle behind achieving high-quality welding is discussed to elucidate the success of this method.
超快激光焊接已成为连接透明材料的一项重要技术，近年来，人们对玻璃材料的焊接进行了广泛研究。然而，要实现牢固连接，在激光加工过程中样品之间需要光学接触，这使得焊接过程变得复杂并增加了成本。为了在无光学接触的情况下实现玻璃样品的高强度焊接，通常将样品压在一起以最小化间隙，使熔融材料能够完全填充间隙？在本研究中，采用了两种方法来促进石英玻璃高强度焊接：一种是使用夹具在压力辅助下进行飞秒（fs）激光焊接；另一种是借助水中间层的飞秒激光焊接。对这两种方法所实现的焊接质量进行了全面检查和比较？研究结果表明，在水辅助下的飞秒激光焊接在焊接均匀性和质量方面优于其他方法。此外，还讨论了实现高质量焊接的原理，以阐明该方法的成功之处。
