Laboratory corrosion studies can utilize standard reference electrodes to good effect. However, the “real-life” plant, corrosion monitoring, situation often involves process conditions where reference electrodes are impractical or difficult to use satisfactorily. Electrochemical techniques can use either two- or three- identical “working” electrode arrangements, enabling simultaneous monitoring of current and potential at the free corrosion potential. Benefits and experiences of corrosion measurement without reference electrodes are reviewed.

Subject
Working electrodes, Stability, Materials, Corrosion rate, Electrochemical noise, Reference electrodes, Pourbaix diagrams, Potential measurements, Impedance measurements, Corrosion monitoring, Electrodes, Corrosion potential, Electrode potential
Keywords:
Corrosion monitoring, reference electrodes, electrochemical noise, harmonic distortion
© 2001 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).
2001
Association for Materials Protection and Performance (AMPP)
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