The electrochemical corrosion potential (ECP) of 316 stainless steel was measured by using the rotating cylinder electrode under simulated BWR water chemistry conditions. It was demonstrated that the rotating cylinder electrode is useful for measuring the ECP under hydrodynamic conditions in 288°C water. The preliminary results have shown that the increase of the water flow velocity results in a positive ECP shift with increase of the O2 or H2O2 concentration under various water chemistry conditions; indicating the mass transport rate of oxygen to be an important factor controlling the ECP of 316 stainless steel. In addition, a more significant effect of the water flow rate on the ECP behavior was observed in low O2 and H2O2 concentrations.

Subject
Water, Piping, Boiling water reactors, Hydrogen concentration, Autoclaves, Flow velocity, Water flow, Water chemistry, Oxygen, Stainless steel, Electrodes, Corrosion potential, Hydrogen
Keywords:
electrochemical corrosion potential, stainless steel, boiling water reactor (BWR), rotating cylinder electrode, high temperature and high pressure
© 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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