Laser cleaning technology: mechanism
Laser cleaning is a technology that utilizes a high energy density laser beam to interact with the surface of a material, causing dirt or coatings, etc., to be stripped or decomposed from the surface of the substrate, thus realizing the purpose of cleaning. The laser cleaning process involves a variety of physical mechanisms, such as thermal ablation, stress vibration, thermal expansion, evaporation, phase explosion, evaporation pressure, and plasma impact, etc., which work together to promote the separation of the cleaning object and the substrate to achieve the effect of cleaning. According to the different cleaning media, laser cleaning can be divided into laser dry cleaning, wet laser cleaning, and laser shock wave cleaning. Laser dry cleaning Laser dry cleaning is currently the most widely used laser cleaning method, the use of laser beams directly irradiates the substrate surface so that the substrate produces thermal expansion to overcome the van der Waals force, to remove...