中国物理B ›› 2022, Vol. 31 ›› Issue (6): 64205-064205.doi: 10.1088/1674-1056/ac539b
Li-Jun Zhang(张丽君)1, Kai-Nan Zhou(周凯南)2,3, Guo-Ying Feng(冯国英)1, Jing-Hua Han(韩敬华)1,†, Na Xie(谢娜)2,3, and Jing Xiao(肖婧)4
Li-Jun Zhang(张丽君)1, Kai-Nan Zhou(周凯南)2,3, Guo-Ying Feng(冯国英)1, Jing-Hua Han(韩敬华)1,†, Na Xie(谢娜)2,3, and Jing Xiao(肖婧)4
摘要: Laser paint removal in a water environment does not diffuse ablation pollution products into air. Characteristics of water, such as high specific heat and heat flux, generate different effects of the laser paint removal than in an air environment. In this study, the effects of air and water environments on the mechanism and effect of laser paint removal are analyzed and compared experimentally and theoretically. In air, thermodynamic ablation causes removal of paint, whereas in water, stress coupled with plasma shock waves cause tear and splash removal of paint layers after fracture and damage. Fracture and pressure thresholds of the paint and substrate, respectively, indicate the optimum energy density range for laser paint removal in water, providing a reference for engineering applications.
中图分类号: (Laser applications)