Abstract
Double-loop electrochemical potentiokinetic reactivation (DL-EPR) tests were investigated to detect the degree of sensitization (DOS) of low sensitized type 316 stainless steel (ss). The effect of Mo alloying element in type 316 ss on the DL-EPR test was examined and a large suppression effect on the test was seen at low sensitization. By increasing the test solution concentration, it was possible to detect very low DOS in type 316 ss.
Based on these results, DL-EPR measurements in neutron irradiated type 316 ss were performed. The reactivation peak current could be measured by using a high concentration test solution condition. These results suggested that chromium depletion on the grain boundary might occur due to neutron irradiation.
© 1992 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).
1992
Association for Materials Protection and Performance (AMPP)
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