Controlled high temperature incineration is playing an increasingly important role in proper and safe management of both municipal and industrial waste products. Depending on the chemical make-up of the waste stream and combustion conditions, a multitude of aggressive and corrosive high temperature environments are produced. These could be either sulfudizing, carburizing, halogenizing, nitriding, reducing, and oxidizing in nature, or a combination thereof. Other harmfull species are also generated due to presence of alkali metals (Na, K) and heavy metals (Pb, Zn), all of which could attack the various incinerator components. Materials of construction traditionally used for these components have either been iron based, nickel based or cobalt based alloys. This paper describes the development of a new nickel based alloy, which combines the beneficial effects of high chromium, high silicon with microalloying additions of rare earth and nitrogen. Data on various environmental laboratory media, field tests and cost comparisons are shown.

Subject
New alloys, Waste incineration, Costs, Carburization, Materials, Salts, Nickel based alloys, Chromium, Silicon, Sulfidation, Corrosion data, Oxidation, High temperature
Keywords:
Incineration, municipal waste, chemical waste, sulfidation, carburization, oxidation, alloy 45TM, alkali metal corrosion, halogenization, nitridation
© 1993 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).
1993
Association for Materials Protection and Performance (AMPP)
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