A series of laboratory experiments was conducted on the corrosion behaviors in acidizing environments of corrosion resistant alloys (CRAs) such as a 13$ chromium martensitic stainless steel, duplex stainless steels and high nickel austenitic alloys. Corrosion tests were performed with and without a corrosion inhibitor in a stimulating acid of 15% HCl aqueous solution. Corrosion behaviors in spent acid with low pH were also examined. The effect of alloying elements on corrosion behaviors and their roles in the corrosion process were investigated by means of electrochemical measurements.

On the basis of test results, the corrosion risk of CRA OCTG during acid stimulation is discussed in relation to the necessity for the addition of corrosion inhibitors.

Subject
Acids, Corrosion resistant alloys, Stainless alloys, Corrosion rate, Nickel based alloys, Stimulation, Aqueous solutions, Acidity, Tubing, Chemical inhibition, Corrosion inhibitors, Nickel, Alloys
Keywords:
corrosion resistant alloys, hydrochloric acid, corrosion prevention, stainless steel, corrosion inhibitor, polarization
© 1990 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).
1990
Association for Materials Protection and Performance (AMPP)
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