부산대학교 도서관

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.electacta.2009.06.014 Byline: Olga Kopp, Monika Lelonek, Meinhard Knoll Keywords: Surface morphology; Porous alumina; Oxide growth; Concave surface; Convex surface Abstract: The formation of aluminium oxide layers on surfaces with different morphologies prepared by various structuring methods has been analyzed. Different growth rates and thus different oxide thicknesses have been observed under the same reaction parameters on planar surfaces in contrast to convex and concave surfaces with different radii in the curvature. The stronger the curvature of the concave or convex surface, the more the growth rates differ from the growth rates on planar surfaces. The influence of the electrical field strength on those differences is discussed in a simple model. Author Affiliation: Institute for Physical Chemistry & CeNTech, University of Muenster, Heisenbergstr. 11, D-48149 Muenster, Germany Article History: Received 26 February 2009; Revised 25 May 2009; Accepted 5 June 2009