中国激光, 2015, 42 (10): 1003007, 网络出版: 2022-09-24   

基于颗粒形貌及成分分析的激光除漆去除机理研究

Study of Mechanism on Laser Paint Removal Based on the Morphology and Element Composition of Ejected Particle
作者单位
四川大学电子信息学院激光微纳工程研究所, 四川 成都 610064
摘要
通过对纳秒Nd∶YAG 脉冲激光辐照油漆过程中所喷溅的颗粒形貌及成分的分析,研究激光除漆的物理机理。扫描电子显微镜的结果表明,在激光除漆的过程中产生微米量级和纳米量级的颗粒以及纳米网状结构。微米尺度的颗粒形状不规则,表面粗糙;纳米尺度的颗粒呈球形,表面光滑。随着激光能量的增大,微米量级和纳米量级的颗粒平均尺寸都变大。X 射线能谱仪的结果显示,微米量级的颗粒成分与激光辐照前漆的成分相当,与振动去除机制有关,而纳米颗粒中碳的含量(原子数分数)下降超过50%,是由于激光对漆的烧蚀作用所导致。该研究为激光除漆基本物理机理的研究提供新的思路和方法。
Abstract
Laser paint removal mechanism is studied by analyzing the morphology and element composition of the ejected particle coming from nanosecond Nd∶YAG pulse laser radiation. The scanning electron microscope results show that the micro-/nano-particles, web-like aggregates are produced respectively in the process of laser paint removal. Micro- particles have irregular shapes and rough surfaces while nano- particles exhibit spherical and smooth surfaces. The average sizes of micro-and nanoparticles become larger as the laser energy increase. The energy dispersive X-ray spectrometer results indicate that the components of micro-particles are the same as the bulk material, related to the vibration removal mechanism. However, the content (atomic fraction) of C element for nanoparticles decrease seriously, more than 50%, resulting from the effect of laser ablation to paint. The research provides a new idea and method for studying the basic physical mechanism of laser paint removal.

王德良, 冯国英, 邓国亮, 陈康喜. 基于颗粒形貌及成分分析的激光除漆去除机理研究[J]. 中国激光, 2015, 42(10): 1003007. Wang Deliang, Feng Guoying, Deng Guoliang, Chen Kangxi. Study of Mechanism on Laser Paint Removal Based on the Morphology and Element Composition of Ejected Particle[J]. Chinese Journal of Lasers, 2015, 42(10): 1003007.

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