Surface Wettability of Aluminum Alloy Surface by Laser Etching After Heat Treatment

被引：2
|
作者：
Zheng Xiaoguang [1 ]
Ding Yunfei [1 ,2 ]
Wu Huijun [1 ,2 ]
机构：
[1] Guangzhou Univ, Sch Civil Engn, Guangzhou 510006, Guangdong, Peoples R China
[2] Guangdong Prov Key Lab Bldg Energy Efficiency & A, Guangzhou 510006, Guangdong, Peoples R China
来源：
LASER & OPTOELECTRONICS PROGRESS | 2020年 / 57卷 / 15期
关键词：
laser optics; laser etching; aluminum alloy; heat treatment; surface wettability; organics; micro/nano composite structure; SUPERHYDROPHOBIC SURFACE; WATER CONDENSATION; FABRICATION; TRANSITION;
D O I：
10.3788/LOP57.151406
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The cylindrical rough structure was etched on the surface of 6061 aluminum alloy by microsecond laser with different power densities, and the etched rough aluminum alloy sheet was kept in a drying oven at 110 degrees C for 12 hours. The surface rough structures, and the changes of the wettability, surface element, group, and crystal structure before and after heat treatment were characterized by droplet shape analyzer, scanning electron microscope, optical profiler, and X-ray photoclcctron spectroscopy. Experimental results show that the rough aluminum alloy surface etched by microsecond laser has a micro/nano composite structure, and the amount of hydroxyl (-OH) on the surface is reduced after heat treatment. The non-polar component (C-C(H)) is the main component of organics adsorbed on the aluminum alloy surface, and the heat treatment accelerates the adsorption process, which changes the wettability of the rough aluminum alloy surface from the supcrhydrophilic surface to the superhydrophobic surface.
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页数：8
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