Laboratory testing under static and controlled velocity conditions show that electroless nickel (EN) coatings have excellent corrosion resistance in brine, cooling tower water, and caustic environments employed in the production of sodium hydroxide. Corrosion rates of EN coatings are lower than other alloys presently used and economics for their use in process equipment is shown to be extremely favorable. Heat treatment was found to improve the corrosion/erosion resistance of the coating in brine and cooling tower water but no advantage was detected in caustic environments.

Subject
Nickel coatings, Costs, Test methods, Water, Coatings, Electrochemical cells, Corrosion rate, Liquor, Sodium chloride, Heat, Steel, Brines, Electroless nickel
© 1987 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).
1987
Association for Materials Protection and Performance (AMPP)
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