Analysis on the wettability of fused silica glass surface modified by femtosecond Laser

被引：0
|
作者：
Li X. [1 ]
Zhang Z. [1 ]
Wang W. [1 ]
Fan J. [1 ]
Peng Y. [1 ]
Wang K. [1 ]
机构：
[1] College of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing
来源：
Hanjie Xuebao/Transactions of the China Welding Institution | 2020年 / 41卷 / 11期
关键词：
Femtosecond laser; High-speed scanning; Micro-nano structure; Wettability;
D O I：
10.12073/j.hjxb.20200907002
中图分类号：
学科分类号：
摘要：
A femtosecond laser high-speed scanning method is used to prepare hierarchical micro-nano structures on the surface of fused silica. One-scale is periodic micro-nano structure, two-scale is the ablation groove and triple-scale is the gridding structure comprised by bi-direction grooves. The mechanism of micro-nano structure fabricated by femtosecond laser scanning at high speed was revealed through numerical calculations. The wettability test shows that micro-nano structure with the period of 400~500nm which obtained under 1 MHz, 1 000 mm/s, 55% peak power and 30 μm the orthogonal groove spacing has the best wettability. The contact angle of Bi2O3-50%B2O3 solder can be reduced by 8° than that of unmodified fused silica which is beneficial to reduce the residual stress of the brazed joint. Copyright © 2020 Transactions of the China Welding Institution. All rights reserved.
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页码：18 / 24
页数：6
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