Historically, as better high-temperature alloys are developed, furnace users increase the temperature or severity of the furnace operating conditions in their quest for more product or a more desirable ratio of products in the outlet stream. As a result, furnace parts are consistently operating at or near their maximum potential. This, coupled with stresses created during rapid shutdown and start-ups (both scheduled and unscheduled), makes furnace parts prone to fail. During the past several years, we have done several failure analyses of high-temperature materials from an ethylene plant, an ammonia plant and a coal gasification pilot plant and have followed many of these with laboratory or field tests aimed at understanding and preventing the recurring and more expensive failures.

Subject
Pits, Sulfur, Carburization, Stainless alloys, Metal surfaces, Nickel based alloys, Tubes, Molybdenum alloys, Carbon monoxide, Furnaces, Oxide surfaces, Pitting, Hydrogen
© 1977 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).
1977
Association for Materials Protection and Performance (AMPP)
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