Three-Dimensional Distribution for Images on Rough Surface of Plasma-Thermal Sprayed Z_rO_28Y_2O_3 and N_iC_rAlY Irradiated by Laser with Different Beam Width

摘要

The light spot images on the coating rough surface with the plasma-thermal sprayed coating materials Z_rO_28Y_2O_3 and N_iC_rAlY when the laser beam (visible, wavelength is 632.8nm, power is 2mw) with different diameter shined on it have been studied and its experimental demonstration has also been presented in this paper. The Charge Coupled Device(CCD) camera is applied to detect the light spot image field distribution, and three-dimensional (3D) distribution of the light spot images have been obtained by computer. Above experiment results give us some basis knowledge to measure the coating thickness in the next step, which shows the physical behavior of the light spot. In addition, the different profiles of Gauss laser spot image on the rough surface for Z_rO_28Y_2O_3 and N_iC_rAlY coating have been analyzed.