Chlorine contamination has been encountered in more high temperature environments as increasing energy costs have led to the use of lower quality fuels and the application of waste heat recuperation technology to a wider variety of industrial and metallurgical processes1 . The presence of chlorine generally accelerates the corrosion rates of materials, and many materials which are usually considered to be corrosion resistant can be attacked very rapidly in chlorine containing atmospheres. 2-5  Chlorine can accelerate corrosion by promoting the formation of a liquid salt deposit, but can also produce substantial increases in the corrosion rate even when it is present only in the gas phase.6  Depending on the system in which the chlorine is encountered, it may be in the form of HCl, Cl2, or the vapors of chloride salts. The form of the chlorine and the partial pressure of oxygen prevailing in the corrosive atmosphere have significant effects on the corrosion behavior. In this study, the effect of a small amount of Cl2 in an oxidizing environment on the corrosion behavior of superalloys has been investigated over the temperature range 700°C to 850°C.

Subject
Vapor pressure, Corrosion rate, Nickel based alloys, Molybdenum alloys, Constants, Commercial alloys, Corrosion attacks, Metals, Scale formation, Chlorine, Aluminum alloys, Alloys, Chlorides
© 1986 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).
1986
Association for Materials Protection and Performance (AMPP)
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