Abstract:
The Cu-nanoAl2O3 composite coatings were prepared by direct and pulse electrodeposition (named DC and PC), respectively. The results from scanning electron microscope (SEM) indicate that compared with DC, the morphology of PC illustrates has the following features. The surface texture is more fine, and the crystallline granules on sueface are more uniform, and dense. Additionally, the orientation of the granules is enhanceed. The results from X-ray diffract ion indicate that the preferential orientation and granules size of the composite coating strongly depends on the preparation method. Both lattice constant and distortion of PC were increased, which agree with the results from SEM mentioned above.
