An overview of laboratory techniques for electrochemically measuring corrosion rate in aqueous solutions is presented. Techniques such as electrochemical impedance spectroscopy, polarization resistance, and potentiostatic polarization are discussed along with the assumptions made in using each technique. A short summary of the electrochemical background for each measurement is included with possible concerns that are not usually emphasized in making the calculations of corrosion rate. Measuring corrosion rate in the presence of localized corrosion is mentioned with some references to more in depth papers on each topic.

Subject
Electrochemical impedance spectroscopy, Anode potential, Corrosion currents, Corrosion rate, Cathodic current, Constants, Electrochemical current, Anodic current, Localized corrosion, Polarization resistance, Tafel slope, Corrosion potential, Electrode potential
Keywords:
Corrosion rate, electrochemical techniques, potentiostatic polarization, potentiodynamic polarization, electrochemical impedance, polarization resistance, Tafel slopes, basic techniques
© 1991 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).
1991
Association for Materials Protection and Performance (AMPP)
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