Continuing an earlier investigation, a new sealing solution that contains catalytic amount of chromium (1-10μg) was developed. Aluminum alloys 2024-T6 and 6061-T6 coupons were anodized and sealed with the new sealing formulation. Passivation characteristics of these samples were evaluated using potentiodynamic anodic polarization tests. Al 6061-T6 coupons were further subjected to prohesion tests. In this paper, the results obtained from these tests are compared to those obtained by aluminum alloy treated with standard chromate conversion coating.

Subject
Wash solutions, Water, Prohesion, Cathodic protection, Materials performance, Inspection, Sodium chloride solution, Corrosion inhibitors, Health, safety, and environment, Coating formulation, Passivation, Aluminum alloys, Anodic polarization
Keywords:
Aluminum, anodizing, corrosion, inhibitor, sealing
© 1999 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).
1999
Association for Materials Protection and Performance (AMPP)
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