Galvanic coupling between carbon steel and austenitic stainless steel in alkaline media

被引：68

作者：

Abreu, CM

Cristóbal, MJ

Montemor, MF

Nóvoa, XR

Pena, G

Pérez, MC

机构：

[1] Univ Vigo, ETSEI, E-36200 Vigo, Spain

[2] Inst Super Tecn, DEQ, P-1049001 Lisbon, Portugal

来源：

ELECTROCHIMICA ACTA | 2002年 / 47卷 / 13-14期

关键词：

galvanic corrosions; stainless steel; reinforcement; concrete; electrochemical impedance spectroscopy;

D O I：

10.1016/S0013-4686(02)00086-5

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The galvanic currents between carbon steel and two types of stainless steels have been Studied in solutions of pH close to that of concrete. The situations analysed were passivity and active corrosion induced by chlorides. In all cases the galvanic effects recorded were of minor importance indicating that no significant risk of galvanic corrosion exists when carbon steel and stainless steel are electrically coupled in reinforced concrete structures. Oxygen reduction current is lower for stainless steel than for passive carbon steel. The results have been interpreted by means of EIS in terms of the resistivity of the passive layer formed on steels. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：2271 / 2279

页数：9

共 22 条

[1]

Abd El Meguid EA, 1998, BRIT CORROS J, V33, P42, DOI 10.1179/000705998798114787

[2] Electrochemical behaviour of zinc-rich epoxy paints in 3% NaCl solution [J].