Influence of pulse currents on the nanostructure and color absorption ability of colored anodized aluminum

Few investigations have been carried out on the influence of the variation of pulse current parameters on the anodized aluminum. The present paper deals with some experimental results regarding the influence of pulse current parameters on the nanostructure and color absorption ability of colored anodized aluminum. Under these conditions, the nanostructure and the color were found to be dependent on the duty cycles and frequencies. The Field Emission Scanning Electron Microscopy (FE-SEM) analysis showed that variation of the pulse current parameters changed and improved the distribution and uniformity of the pores within the anodic layer and consequently the quality of the final color.