Tuberculation is a major form of corrosion on steel and cast iron contacting oxygenated water. Yet, the tuberculation process is not completely understood. Tubercles are much more than amorphous lumps of oxide covering localized areas of metal loss. Structure and chemical composition are complex. Major factors controlling growth include water chemistry, flow and biological interaction. Tubercle structures, chemical composition, growth mechanisms and biological interactions are thoroughly discussed. The relationship between structure and composition illustrates rapid and slow growth.

Subject
Acids, Water, Materials, Hydroxides, Corrosion rate, Metal surfaces, Sulfates, Magnification, Acidity, Tubercles, Bacteria, Magnetite, Oxygen
© 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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