期刊
SCRIPTA MATERIALIA
卷 66, 期 8, 页码 503-506出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.09.026
关键词
Nanoporous; Metal; Foam; Amorphous; Corrosion
类别
资金
- Center for Integrated Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy Sciences user facility at Los Alamos National Laboratory [AC52-06NA25396]
- Sandia National Laboratories [DE-AC04-94AL85000]
We examine the influence of electrochemical parameters on transversely isotropic nanoporous (NP) platinum foam synthesized from amorphous PtxSi1 - (x) by dealloying. The externally applied potential controls the size of the Voronoi polyhedra on the free surface with sizes ranging from 0.01-0.35 mu m(2). The shape of the amperometric curve is governed by the dealloying front progression that in turn advances faster than the rate of diffusion of Si in the electrolyte. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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