Abstract
Selected stainless steel and nickel-base alloys, as well as a FeCrAlY cladding, were evaluated for potential use as a high-temperature heat exchanger in a closed cycle gas turbine application. Corrosion probe exposures were conducted in pulverized coal-fired boilers at three plants that burned coals with sulfur contents from 0.5 to 3.1 percent. Specimen temperatures ranged from 1,000 to 1,600°F (538 to 870°C). The highest corrosion rates, up to 14 mils/yr (0.35 mm/yr), occurred with AISI 304H stainless steel. For the other alloys tested, 310H, 800H, 86, 617, 618E, 671, and FeCrAlY, corrosion rates were all less than 5 mils/yr (0.13 mm/yr).
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
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