A bacterium isolated from a copper-containing marine coating produced copious amounts of extracellular polymer under suitable conditions and altered the corrosion behavior of copper in a seawater/glutamate medium. Electrochemical measurements and surface analyses showed a five-fold increase in the corrosion rate of copper in the presence of the microorganism. Proposed mechanisms for the enhanced corrosion are discussed.

Subject
Corrosion rate, Metal surfaces, Seawater, Copper alloys, Acidity, Biofilms, Ion concentrations, Negative potentials, Oxide surfaces, Metals, Maritime, Copper, Microorganisms
Keywords:
Copper, marine bacterium, microbiologically influenced corrosion, bacterial exopolymer, polymeric metal binding
© 1991 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).
1991
Association for Materials Protection and Performance (AMPP)
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