Corrosion mechanisms remain a major cause of tube failures in operating boiler units. Conditions resulting in caustic corrosion, acid corrosion, chelant corrosion and sulfate induced high temperature external corrosion of boiler tubes are reviewed. Three case histories are presented illustrating the impact of the conditions discussed on boiler tube failures.

Subject
Water, Metal surfaces, Tubes, Sulfates, Iron, Feedwater, Oxide surfaces, Mechanical failure, Sodium, Boilers, Magnetite, Deposit corrosion, Corrosion mechanisms
Keywords:
Boilers, tube failures, caustic corrosion, acid corrosion, chelant corrosion, high temperature corrosion
© 1996 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).
1996
Association for Materials Protection and Performance (AMPP)
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