High grade stainless steels rely on an extremely thin passive layer for their corrosion protection in saline environments. This paper examines how the corrosion behavior of three high grade stainless steels (UNS S31254, UNS S32654 and UNS S32750) is affected when the passive layer is removed by the mechanical influence of an impinging liquid-solid jet. The effect of corrosion in enhancing the erosion material loss has been found to be significant. In terms of alloying it would appear that even when the passive layer is not intact the stainless steels which exhibit the best corrosion resistance in static conditions also exhibit the lowest corrosion current densities under these aggressive tribo-corrosion conditions.

Subject
Materials, Corrosion currents, Corrosion rate, Impingement, Mass loss, Solids, Free corrosion potential, Liquids, Material degradation, Erosion, Stainless steel, Erosion corrosion, Passivity
Keywords:
corrosion, erosion, synergy, seawater, impingement, erosion-corrosion, stainless steels
© 2002 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).
2002
Association for Materials Protection and Performance (AMPP)
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