Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Nanosecond Laser Cleaning of Aluminum Alloy Oxide Film

  • Hang Dong (Jilin Key Laboratory of Solid-State Laser Technology and Application School of Science, Changchun University of Science and Technology) ;
  • Yahui Li (Jilin Key Laboratory of Solid-State Laser Technology and Application School of Science, Changchun University of Science and Technology) ;
  • Shanman Lu (Jilin Key Laboratory of Solid-State Laser Technology and Application School of Science, Changchun University of Science and Technology) ;
  • Wei Zhang (Jilin Key Laboratory of Solid-State Laser Technology and Application School of Science, Changchun University of Science and Technology) ;
  • Guangyong Jin (Jilin Key Laboratory of Solid-State Laser Technology and Application School of Science, Changchun University of Science and Technology)
  • Received : 2023.07.17
  • Accepted : 2023.10.09
  • Published : 2023.12.25
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Abstract

Laser cleaning has the advantages of environmental protection, precision, and high efficiency, and has good prospects for application in removing oxide films on the surface of aluminum alloy. This paper discusses the cleaning threshold and cleaning mechanism of aluminum alloy surface oxide film. A nanosecond pulsed laser was used to remove a 5-㎛-thick oxide film from the surface of 7A04 aluminum alloy, and the target surface temperature and cleaning depth were simulated. The effects of different laser energy densities on the surface morphology of the aluminum alloy were analyzed, and the plasma motion process was recorded using a high-speed camera. The temperature measurement results of the experiment are close to the simulation results. The results show that the laser cleaning of aluminum alloy oxide film is mainly based on the vaporization mechanism and the shock wave generated by the explosion.

Keywords

Acknowledgement

We are grateful to the Jilin Key Laboratory of Solid-State Laser Technology and Application for supporting the equipment in the experiments.

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