As an effective technology in preventing metal structures from corrosion in marine environment, the cathodic protection has been widely used for shallow-water oil & gas transportation and storage facilities. On the other hand, parameters like temperature, pressure and dissolved oxygen content in deep-water environment are quite different from those in shallow-water area, bringing lots of uncertainties and difficulties for the application of CP technology. In the present work the CP current density requirement, the CP potential range and the service performances of aluminum alloy sacrificial anode for carbon steel and stainless steel in deep-water environment are studied through indoor experiments. The results can provide some references for the application of CP technology in deep-water environments.

Subject
Marine environments, Water, Galvanic anodes, Cathodic protection, Calcium, Seawater, Current densities, Deep water, Steel, Duplex stainless steel, Deposit corrosion, Protection potential, Corrosion potential
Keywords:
deep water, cathodic protection, CP current density, protection potential, anode performances
© 2012 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).
2012
Association for Materials Protection and Performance (AMPP)
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