Abstract
Boiler tube failures involving fireside corrosion due to low melting point eutectic formation and waterside corrosion due to acid phosphate attack and caustic gouging are discussed. Tubes were examined using scanning electron microscopy/energy dispersive x-ray spectroscopy and metallographic techniques. In addition, corrosion products were examined using x-ray diffraction analysis. Key factors leading to corrosion and failure are provided.
Subject
Acids,
Pits,
Corrosion failures,
Hydrogen damage,
Metal surfaces,
Tubes,
Walls,
Iron,
Corrosion products,
Phosphates,
Sodium,
Metals,
Copper
© 2005 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).
2005
Association for Materials Protection and Performance (AMPP)
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