Abstract
This paper investigates a key concern with Ultra High Pressure Waterjetting (UHPWJ) surface preparation – the impact of “flash rusting” on coating life. Flash rusting can occur under certain environmental conditions when the steel is left sufficiently wet following UHPWJ. Reducing or eliminating flash rusting can increase the cost of surface preparation. However, flash rust’s impact on coating life is debated. This paper presents an evaluation of coatings applied over flash rust on US Navy ship hulls. The coatings were inspected after up to six years in service. The results show that the coating performance over locations which had Moderate levels of flash rust was comparable to those with Light levels of flash rust.
© 2009 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).
2009
Association for Materials Protection and Performance (AMPP)
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