Atmospheric corrosion is an important degradation process that causes damage to, among other things, buildings, bridges, vehicles, structures, plants and ships. Testing has been carried out for more than eighty years to better understand the mechanism of atmospheric corrosion. Chloride and sulfur dioxide have been identified as key aggressive agents in promoting atmospheric corrosion. The International Organization for Standardization has sponsored a major effort to develop a quantitative approach to classifying atmospheric corrosivity. The development of standard methods for measuring corrosion rates and corrosivity has allowed the development of corrosivity maps in various parts of the world. New challenges include coping with environmental changes, developing new techniques for dealing with atmospheric corrosion, and finding the resources for future developments.

Subject
Atmospheric corrosion, Test methods, Time of wetness, Materials, Corrosion rate, Metal surfaces, Corrosivity, Atmosphere, Metals, Steel, Maritime, Sulfur dioxide, Chlorides
Keywords:
Atmospheric corrosion, weathering steels, time of wetness, automotive corrosion, cost of corrosion, galvanic corrosion, indoor atmospheric corrosion, sulfation plate, chloride candle, nonmetallic degradation
© 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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