Role of a clay sediment deposit on the corrosion of carbon steel in 0.5 mol L-1 NaCl solutions

被引：62

作者：

Jeannin, M. ^{[1
]}

Calonnec, D. ^{[1
]}

Sabot, R. ^{[1
]}

Refait, Ph. ^{[1
]}

机构：

[1] Univ La Rochelle, Lab Etud Mat Milieux Agressifs, EA 3167, F-17042 La Rochelle 01, France

来源：

CORROSION SCIENCE | 2010年 / 52卷 / 06期

关键词：

Clay; NaCl solutions; Steel; Green rust; mu-Raman spectroscopy; RAMAN-SPECTROSCOPY; STATISTICAL-ANALYSIS; ANAEROBIC CORROSION; COMPACTED BENTONITE; IRON CORROSION; MILD-STEEL; PRODUCTS; CHLORIDE; OXIDES; ADSORPTION;

D O I：

10.1016/j.corsci.2010.02.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：2026 / 2034

页数：9

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