Microbial degradation of coating materials is a well known phenomenon. Early work by NOVA showed that coating components can feed a serious microbial corrosion scenario under disbonded tape coatings. A quantitative relationship between bacteria and coating damage has been hard to establish. This paper presents results of long term exposure studies of various coatings to biologically active soils. A test protocol has been established which allows coatings to be compared based on their resistance to biological degradation. Using a combination of exposure to realistic soil environments followed by cathodic disbondment the performance of coatings can be ranked.

Subject
Holidays, Water, Coatings, Sand, Tape, Cathodic disbondment test, Fusion bonded epoxy coating, Coating damage, Cathodic disbondment, Disbondment, Polyethylene, Soil, Damage
© 1995 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).
1995
Association for Materials Protection and Performance (AMPP)
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