Survey of atmospheric corrosion test results of structural metals in open air and under shelters on the base of multilateral European programs (1968 - 1992) is presented and in the view point of trend effects of SO2 pollution analysed.

The regional and microclimatic pollution effects are documentated by SVUOM testing results on Czech permanent test sites, test sites on the territory of Prague and testing places on the St. Vitus cathedral in the locality of Prague castle. The variability of pollution activity and of time of wetness in the regional sense and on different objects' surfaces is considered.

Utilization and limits of the regional approach for pollution effects evaluation are proposed. It is not purposeful to differentiate atmospheric corrosivity when designing a large object; the different corrosivities should be respected in the inspection and maintenance plans.

Subject
Atmospheric corrosion, Test methods, Time of wetness, Corrosion rate, Corrosivity, Corrosion testing, Corrosion losses, Salinity, Metals, Pollution, Weathering, Steel, Zinc
Keywords:
atmospheric corrosion, structural metals, open air and sheltered exposure, pollution effects, corrosivity category, regional and microclimatic influences
© 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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