Nanosecond laser cleaning provides an alternative cleaning method that displays a significantly improved cleaning efficiency without environmental pollution. This paper reports the results of an investigation into the nanosecond pulsed laser cleaning of TA15 titanium alloy oxide film using the laser fluence and the laser head moving speed as variables. The TA15 titanium alloy oxide film changed from original silver gray to silvery white with the increase of laser fluence. However, the material surface transformed from silvery-white into yellowish-brown when the laser energy fluence exceeded 5.97 J/cm². This phenomenon was attributed to the formation of titanium alloy oxides (Ti₆O, TiO₂-anatase, γ-TiO₂, and TiO) after removing the oxide film using a high laser fluence at atmospheric conditions. The best surface properties were obtained when the laser fluence and the laser head moving speed were set to 3.98 J/cm² and 5 mm/s, respectively. The oxidation content and roughness were 2.08 wt% and 37 μm, respectively. The removal effect of the oxide film was best when the surface temperature was slightly higher than the boiling point of the oxide film, as shown by numerical calculations and analysis. The main mechanism of laser cleaning was laser ablation.

纳秒激光清洗提供了另一种清洗方法，该清洗方法显示出显着提高的清洗效率，而不会造成环境污染。本文报道了以激光能量密度和激光头移动速度为变量对TA15钛合金氧化膜进行纳秒脉冲激光清洗的研究结果。随着激光注量的增加，TA15钛合金氧化物膜从原来的银灰色变为银白色。但是，当激光能量通量超过5.97 J / cm ²时，材料表面从银白色变为黄棕色。该现象归因于钛合金氧化物（钛的形成₆ O，二氧化钛₂ -anatase，γ-的TiO ₂，然后在大气条件下使用高激光通量去除氧化膜。当激光通量和激光头移动速度分别设为3.98 J / cm ²和5 mm / s时，可以获得最佳的表面性能。氧化含量和粗糙度分别为2.08wt％和37μm。如数值计算和分析所示，当表面温度略高于氧化膜的沸点时，氧化膜的去除效果最佳。激光清洁的主要机理是激光烧蚀。