Abstract
Several factors affecting the adhesion of fusion bonded epoxy coatings to steel substrates have been investigated. The effect of pH, applied cathodic potentials, cyclic wetting and drying, presence of fillers in epoxy resins, and development of interfacial stresses due to water uptake by coatings are reported. It was found that the combined effect of high pH and high cathodic potentials is more detrimental to adhesion than the individual effect of any of these factors. Cyclic wetting and drying increased the rate of disbondment while the presence of fillers in epoxy coatings decreased it. Finally, the presence of interfacial stresses due to water uptake by epoxy coatings was identified as a contributing factor to disbondment.
© 2000 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).
2000
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.
