This paper summarizes the results from laboratory investigations of water-soluble salts’ effect on protective coatings’ performance. The test program has included assessment of both sodium chlorides’ and iron sulphates’ influence on cathodic disbonding, ageing resistance under cyclic climatic conditions, and blistering when immersed in distilled water. Two commercially available epoxy systems and an epoxy clear lacquer were included in the tests.

Salt contaminations had little or no effect on scribe creep during the cyclic test. For all other test parameters, there were significant reductions in the coatings’ performance as the salt concentrations increased.

Subject
Steel surfaces, Water, Extraction, Contamination, Salts, Sulfates, Sodium chloride, Cathodic disbondment, Creep, Epoxies, Blistering, Chlorides, Coating systems
Keywords:
adhesion, blistering, cathodic disbonding, scribe creep, underfilm corrosion
© 2011 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).
2011
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.