Electrochemical noise has been used as a corrosion monitoring tool for almost twenty-four years. During this time, the technique has received a high level of interest in both laboratory and field applications. Various analytical approaches in both the time and frequency domains have been developed for data evaluation. In addition, different probe arrangements/geometries and electronic instrumentation have been applied to help capture essential mechanistic information.

This paper describes how the technique and some of its variants have evolved in the last few years. The paper also discusses some of the fundamental aspects of how the technology has been used to identify localized corrosion effects, with emphasis on interpretation of the observed electrochemical response as it evolves.

Subject
Double layer, Materials, Corrosion currents, Corrosion rate, Electrochemical noise, Constants, Current noise, Pitting, Localized corrosion, Electrodes, Corrosion potential, Electrode potential, Types of corrosion
Keywords:
Electrochemical noise, corrosion kinetics, general corrosion, localized corrosion
© 2005 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2005
Association for Materials Protection and Performance (AMPP)
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