Mild steels are susceptible to stress corrosion cracking (SCC) by nitrate solutions, as well as caustic1,2  and carbonate3  solutions. The cracking mode in these solutions is intergranular1  and thought to be due to pre-existing active paths related to the compositional differences at grain boundaries.4  SCC can be inhibited by adding NO2−⁠, OH−, and some organic chemicals to the bulk solution.5  The temperature dependence of SCC is also important for practical applications and for an understanding of the mechanism of nitrate SCC.

Subject
Crack growth, Intergranular stress corrosion cracking, Composition, Stress intensity, Oxides, Crack initiation, Bulk solution, Stress cracking, Stress, Nitrates, Crack velocity, Steel, Stress corrosion cracking
© 1977 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).
1977
Association for Materials Protection and Performance (AMPP)
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