Abstract：The Cu-Ni-Cr composite electroplating of PVC film was investigated. Except physical coarsening and chemical coarsening, the other processing steps was carried out at an automatic production line of electroplating of plastics. The thickness, heat resistance and morphology of Cu-Ni-Cr coatings were analyzed by X-ray fluorescence thickness gauge (XRF) and scanning electron microscope (SEM). The results show that brightness, adhesion and thermal shock resistance of the coating obtained by physical coarsening are better than those obtained by chemical coarsening. Ni thickness made by physical coarsening is more even that by chemical coarsening while the result of Cu coating is contrary. This is because the surface roughness of physical coarsening was larger.
2021, Vol. 28 