期刊
CORROSION SCIENCE
卷 52, 期 6, 页码 2026-2034出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2010.02.033
关键词
Clay; NaCl solutions; Steel; Green rust; mu-Raman spectroscopy
The role of different minerals (silica, kaolinite, chlorite and montmorillonite) in the corrosion processes of steel in 0.5 mol L-1 NaCl solutions was investigated. About 200-500 mu m thick layers of minerals were deposited by sedimentation. Cyclic voltammetry indicated that the deposits favoured a general corrosion process, except montmorillonite that induced a pitting process, explained by the partial dissolution of the particles and their interaction with the steel surface. mu-Raman analyses of the corrosion products found at the steel/deposit interface after 2.5 and 20 h of polarization showed that interactions between minerals and dissolved Fe species could influence rust formation. (C) 2010 Elsevier Ltd. All rights reserved.
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