The potential of adsorption of scale inhibitor and indeed other cations such as magnesium and calcium, promoted by electrochemical pre-treatment, to effectively protect metallic surfaces from the adhesion and growth of calcium carbonate scale is investigated in this study. An experimental study has examined the effect of pre-treatment of rotating disk electrode (RDE) surfaces in preventing scale deposition. The beneficial effect of the divalent Mg2+ cations, present during pre-treatment has been demonstrated. Visualization of the amount of scale deposition, with and without electrochemical pre-treatment, has been conducted using scanning electron microscopy (SEM).

In summary, this paper describes the beneficial effects of using an electrochemical pre-treatment to inhibit scale deposition on metal surfaces and assesses the cation/inhibitor interactions and their effect on inhibitor efficiency.

Subject
Ions, Inhibitor performance, Metal surfaces, Scale inhibitors, Scale deposition, Pretreatment, Film formation, Scale formation, Brines, Magnesium, Cations, Electrodes, Scaling
© 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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