Industry constantly seeks improved methods to evaluate protective coatings. In immersion service, protective coatings act to reduce electrochemical activity at the metal/coating interface. Tracking this activity via the use of segmented panel testing appears to offer additional insight into coating performance that may aid in coating design and predicting longer-term performance. The data generated also suggest that many currently used observations, such as degrees of surface rusting, are not as significant as presumed. The paper recommends some additional performance standards for predicting coating performance.

Subject
Noble potential, Holidays, Test methods, Coating performance, Protective coatings, Water, Coatings, Electrochemical cells, Corrosion currents, Centerlining, Steel, Corrosion protection, Barrier coatings
© 2015 Association for Materials Protection and Performance (AMPP). All rights reserved. This work is protected by both domestic and international copyright laws. 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).
2015
Association for Materials Protection and Performance (AMPP)
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