The selection of heat-resistant alloys is reported in terms of hot corrosion mechanisms that are common to their use in carburizing and sulfurizing environments. Data based on laboratory oxidation tests and carburization tests are presented. Coupon exposure of heat-resistant alloys having a wide variation in alloy content has been implemented in waste disposal units used in dissimilar applications. The mode of hot corrosion and the rates of corrosion have been determined.

Intergranular oxidation associated with carburization has been the mode of hot corrosion in an incinerator for pyrolyzing waste solvents, paints, and spent aircraft fuel. Sulfidation has been observed in a pyrolyzer used for converting rubber tires to carbon black. Carburization, sulfidation and severe chromium depletion have been observed in a third unit.

Subject
Carburization, Materials, Metal surfaces, Nickel based alloys, Chromium, Metal coupons, Commercial alloys, Silicon, Weight loss, Sulfidation, Carbon, Alloys, Oxidation
© 1987 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).
1987
Association for Materials Protection and Performance (AMPP)
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