For the codeposition of Cr and Si into plain carbon and low alloy steels using the pack cementation process, the importance of using a silica filler to increase the fluorine activity in a pack is treated thermodynamically and experimentally. Also, results of cyclic oxidation tests indicate a thin protective silica film is formed during the oxidation of coated AISI 1018 steel coupons, however the silica film has not been positively identified.

Subject
Thin films, Coatings, Materials, Thermodynamics, Materials performance, Chromia, Steel coupons, Silica, Partial pressures, Oxide scales, Steel, Scale, Oxidation
Keywords:
pack cementation, codeposition, diffusion coatings, thermodynamics
© 1992 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).
1992
Association for Materials Protection and Performance (AMPP)
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