A corrosion testing program was undertaken to evaluate the corrosion resistance of anodized/oxygen stabilized films on aluminum substrate. In oxalic acid the oxide layer formation is the self-color type with superior corrosion resistance properties. Two test procedures are discussed that were used to complete the evaluation. These included the Kape test, and the potential decay test in natural immersion. Electron microscopy was used to identify the attack pattern. In accordance with the test results a corrosion resistance ranking designation was assigned to various surfaces based on electrical and physical process parameters. Finally, a cross-reference was established to correlate the rankings to various atmospheric environments.

Subject
Films, Water, Materials, Anodic protection, Barrier layers, Oxide formation, Aluminum, Oxide films, Oxalic acid, Pores, Film formation, Corrosion resistance, Electrolytes
© 2001 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).
2001
Association for Materials Protection and Performance (AMPP)
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