Hot corrosion is caused by liquid deposits. It is shown that Na2SO4 and Na2SO4 - NaVO3 solutions can be taken as examples of deposits which form on materials used in combustion environments. The hot corrosion of metallic alloys and some ceramics induced by such deposits is described. It is shown that both types of materials can be degraded by a number of different mechanisms. These mechanisms are briefly described. Once induced, the hot corrosion of metallic alloys is very severe. The hot corrosion of ceramics occurs at slower rates than metallic alloys but this attack of ceramics is substantial and can be expected to affect mechanical properties.

Subject
Acids, Hot corrosion, Materials, Nickel based alloys, Protective scales, Corrosion products, Corrosion attacks, Scale formation, Ceramics, Deposit corrosion, Corrosion mechanisms, Aluminum alloys, Alloys
© 1991 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).
1991
Association for Materials Protection and Performance (AMPP)
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