In 15% hydrochloric acid at 150°F, uninhibited corrosion rates for carbon steels are primarily dependent on the carbon content, while the inhibited corrosion rates for carbon steels show major dependency on the carbon content and microstructure. The uninhibited and dodecylpyridinium bromide (0.003M) inhibited corrosion tests showed maximum corrosion rates for a carbon steel with 0.53% carbon. 1-Octyn-3-ol (0.0015M) provided good protection for normalized carbon steels, but the inhibitor's performance was observed to be very sensitive to the microstructure of some quenched/tempered carbon steels. The uninhibited and inhibited corrosion rates of production tubing did not show the same dependency to carbon content or microstructure as carbon steels; however, the protection by 1-octyn-3-ol was less for quenched and tempered production tubing than for normalized tubing. During some corrosion tests, depletion of the inhibitors was observed which resulted in increased corrosion rates. Depletion of the dodecylpyridinium bromide and 1-octyn-3-ol was determined using liquid and gas chromatography, respectively.

Subject
Acids, Corrosion rate, Microstructure, Steel coupons, Corrosion testing, Tubing, Corrosion inhibitors, Steel, Carbon steel, Carbon, Corrosion protection, Hydrochloric acid, Heat treatment
© 1986 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).
1986
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.