Electrochemical techniques for the assessment of corrosion processes have been widely adopted for many years. Traditional techniques typically use an applied voltage signal and the current response is monitored. This enables an estimation of the corrosion rate to be made. Recent studies have used the technique of Electrochemical Noise, which involves monitoring the spontaneous fluctuations in potential and current, in the absence of an applied signal. This approach has certain advantages, particularly in that the spontaneous evolution of the corrosion process(es) may be studied. Some of the more commonly used methods for data analysis and interpretation are demonstrated, along with guidelines as to how the data may be best presented.

Subject
Noble potential, Electric current, Corrosion currents, Corrosion rate, Electrochemical noise, Constants, Corrosion attacks, Electrochemical current, Crevice corrosion, Electrochemical data, Corrosion data, Pitting, Electrode potential
Keywords:
Corrosion, Electrochemical Noise, Charge-Transfer Resistance, Electrochemical Impedance Spectroscopy, Pitting, Stress-Corrosion Cracking
© 1992 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).
1992
Association for Materials Protection and Performance (AMPP)
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