Experiment study of laser thermal enhanced electrochemical deposition

The experiment of laser thermal enhanced electrochemical deposition was investigated in this paper and the deposition layer of copper was obtained when laser irradiated the stainless steel substrate through the electrolyte. Then the scanning electron microscope was utilized to observe the surface morphology and cross-sectional morphology of the deposition layer. According to morphology observed, the laser thermal effect was discussed and the mechanical of laser enhanced electrochemical deposition was analyzed. The results show that the thermal effect of laser could increase the electrode potential and speed up the reduction reaction rate of electrochemical deposition. Compared with the ordinary electrodeposition, the grain size of electrodeposition has also been greatly reduced. When the laser energy was 0.2 mJ (20 kHz), the deposition rate was better and when the laser energy was between 0.2 mJ (20 kHz) and 0.4 mJ (20 kHz), the deposition layer with high tensile strength was gained. The results are useful to the development of the later electrochemical machining technology.