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The behaviour of iron and low alloy steels in anhydrous organic solvents—methanolic solutions

Authors
Journal
Corrosion Science
0010-938X
Publisher
Elsevier
Volume
28
Issue
4
Identifiers
DOI: 10.1016/0010-938x(88)90057-1
Disciplines
  • Chemistry

Abstract

Abstract The data supplied by electrochemical methods such as potentiodynamic polarization curves and potentiostatic anodic transients show that in methanolic solution a region of unstable passivity for Armco iron and Ni-Cr-Mo low alloy steels results from the overlapping of certain ranges of solution composition (e.g. acidity up to 10−3 M as sulphuric acid, chlorides 10−4 to 10−3 M, water 0.01–0.5%). Slow strain rate tests indicated that the instability of the protective oxide films can induce susceptibility to stress corrosion cracking in the presence of applied stresses.

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