Abstract
The performance of mill-finish and powder-coated aluminium alloys was evaluated for up to two years at 30 sites underground at ten mines. Even though the majority of these exposure sites were very corrosive, the corrosion rate of the mill-finish aluminium alloys was less than 10 μm/y at 25 of the sites. Twelve sites that were fairly representative of the corrosivity ratings encountered were examined in more detail. The mode of corrosion was primarily pitting, in most cases of a benign nature. At most sites there was significant loss of metal from the horizontal surfaces of the samples, due to erosive impact of falling debris.
Subject
Pits,
Water,
Corrosion rate,
Materials performance,
Corrosivity,
Aluminum,
Powder coatings,
Erosion,
Steel,
Pitting,
Mining,
Aluminum alloys,
Samples
© 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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