Field tests dealing with the corrosive environments in different parts of the automotive body have been carried out. The tests were run on a Volvo 244, driven a fixed distance in Gothenburg for three weeks in March 1981, a season with wet snow and deicing salt on the roads.

The corrosiveness was measured at 12 selected locations outside and inside the car body. Atmospheric corrosion cells for continuous monitoring and steel specimens for time averaged corrosion measurements were used. Environmental factors were measured at the same time. At 9 locations the daily, weekly and 3-week average deposits were collected and the total amount of deposits of chloride, sulphate, iron and copper were determined. At 3 locations, only 3-week average deposits were taken. At 6 locations filter, sampling for SO2, chloride and sulphate was carried out.

The results show that condensation and hygroscopic mud play a dominating role in the corrosion. Sulphates and chlorides are the most interesting ions in the mud. Sulphates and SO2 deposited are basicly connected to the general pollutant level in the area. The chloride deposition is more connected to the driving period and the local road conditions.

Subject
Electric current, Water, Electrochemical cells, Salts, Sulfates, Drilling fluid, Deicing, Electrochemical current, Engines, Filters, Weight loss, Deposit corrosion, Chlorides
© 1982 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).
1982
Association for Materials Protection and Performance (AMPP)
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