Corrosion damage due to acid deposition has been studied by exposing samples of galvanized steel, nickel and latex house paint (with and without carbonate extender) at three test sites in the Greater Los Angeles area and in Salinas, CA. Atmospheric corrosion rate monitors (ACRM) with zinc or nickel sensors facing the sky or the ground have also been exposed. The ACRMs provide a continuous record of the time-of-wetness and atmospheric corrosion rates. The results of the field tests show that corrosion rates for galvanized steel are very low with the lowest rates being observed in the winter months. The higher corrosion rates observed during the summer are considered to be caused by nitric acid produced by photochemical oxidation of NOx.

Subject
Atmospheric corrosion, Sensors, Materials, Corrosion rate, Winter, Corrosion losses, Galvanized steel, Weight loss, Corrosion data, Zinc, Nickel, Latex paints, Paints
Keywords:
atmospheric corrosion, corrosion rates, time-of-wetness, field tests, California, galvanized steel, nickel, latex paint, corrosion sensors
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
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