Mechanochemical Anodic Dissolution of Austenitic Stainless Steel in Hot Chloride Solution at Controlled Electrode Potential
- 1 January 1964
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 111 (3) , 348-352
- https://doi.org/10.1149/1.2426120
Abstract
The influence of metal yielding on the anodic dissolution rate of 18Cr‐8Ni stainless steel in 42 weight per cent (w/o) aqueous magnesium chloride solution at 154°C has been examined under conditions of controlled potential. At −0.14v (e H) in solution flowing at 52 cm/sec to eliminate concentration polarization, yielding of the metal anode at ca. 100%/min increases the anode current density by a factor of>104. A preliminary discussion of the mechanism of the mechanochemical effect is given; probably the intense disarranging of the deforming metal surface during the arrival of dislocation pile‐ups produced by restricted slip results in a large transient increase in the density of anodically active surface sites.Keywords
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