Laser removal of oxide layer by using Q-switched Nd: YAG laser

The influence of various laser energies on the surface roughness, morphology, and element content of aluminium alloy and copper are investigated using a Q-Switched Nd: YAG laser with a wavelength of 1064nm and a frequency of 2Hz. The sample’s surface will ablate at different laser energy levels: 0.5J, 1.0J, and 1.4J. The surface roughness of aluminium alloys and copper is measured using atomic force microscopy (AFM). Scanning electron microscope (SEM), and energy dispersive X-ray(EDX) analyses are used to investigate the surface morphology and element content of the sample. According to the findings, 1.0J is the laser energy setting that most successfully removes the oxide layer from copper and aluminium alloy surfaces. When the laser energy reaches 1.0 J, the oxygen content is at its lowest. The results demonstrated that the oxide layer and impurities might be cleaned and removed from the sample surface using laser cleaning.