Abstract
A review of galvanized steel and painted galvanized steel processes is provided, as well as the fundamentals and requirements for painted galvanized steel products. The corrosion processes found with both galvanized steel and painted galvanized steels are discussed. In the evaluation of painted galvanized steels, various laboratory techniques have proven most useful, with electrochemical impedance spectroscopy (EIS) as a sensitive quantitative technique for measuring coating degradation and corrosion protection. A detailed overview of the EIS technique is provided. Two case studies are provided for the laboratory evaluation of replacement and repair coatings for painted galvanized structures, featuring EIS and other laboratory techniques.
© 2006 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).
2006
Association for Materials Protection and Performance (AMPP)
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