The use of electrochemical noise (EN) measurements for the study of corrosion processes is now well established, but it remains somewhat unclear as to the best methods to use the extract useful information from the measured time records. Many of the simpler methods are based on the calculation of statistical parameters, such as the standard deviation of current, σI, or potential, σE, and the electrochemical noise resistance, Rn. A problem with many parameters derived from EN measurements is they are inherently noisy, which can make interpretation difficult. This paper explores an alternative method of plotting these parameters that may offer some advantages. The method is inspired by the method developed by Schmitt, and the relationship between this method and conventional statistical parameters is examined.

Subject
Electric current, Materials, Corrosion currents, Corrosion rate, Electrochemical noise, Slopes, Deviation, Electrochemical current, Filters, Electrochemical data, Localized corrosion, Pitting factor, Samples
Keywords:
Electrochemical noise, integrated absolute deviation, integrated standard deviation
© 2007 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).
2007
Association for Materials Protection and Performance (AMPP)
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