期刊
ELECTROCHIMICA ACTA
卷 54, 期 11, 页码 3086-3091出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2008.11.062
关键词
Nanostructure; Self-organisation; Stainless steels; Duplex
资金
- DEN/CEA
The nanoscaled morphology of the overlayer covering stainless steels after electropolishing in perchloric acid-based electrolyte was explored mainly by AFM and SEM. Two kinds of stainless steels were tested. For the austenitic one (AISI 304L), a quasi-periodic arrangement of pores in this overlayer has been observed. Depending on the experimental conditions, the distance between neighbouring pores ranged from 20 nm up to 230 nm. This inter-pore distance varied either with the applied voltage or with the current density for a constant voltage. From XPS spectra performed on the nanostructured surfaces, analysis of the energy shifts of Cr and Fe 2p levels showed that the anodic overlayer was enriched in Cr atoms compared to the 304Lsteel bulk composition. For the austeno-ferritic duplex stainless steel, the electropolished surface exhibited nanoscaled pores, which had grown and self-organised on both phases but with different characteristic dimensions. (C) 2009 Published by Elsevier Ltd.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据