The cleaning, deoxidization, and conversion coating of automotive aluminum alloys with a commercial non-toxic and chrome-free pretreatment sytem is described in detail. The results of paint adhesion and filiform testing with powder coatings, solvent and water borne epoxies and various urethane coatings is presented along with comparison data for chrome and other non-chrome systems. Neutral salt-spray data is presented. In addition, scanning electron micrographs of treated surfaces are shown along with data on the physical and chemical compositon of the surfaces.

Subject
Coatings, Metal surfaces, Aluminum, Oxide films, Manganese, Oxide surfaces, Surface corrosion, Metals, Corrosion resistance, Aluminum alloys, Steam, Chemical conversion coatings, Aluminum oxide
Keywords:
Chrome-free, corrosion resistant, automotive
© 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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