Effect of deformation on electrochemical properties of the double layer and surface charge of metals

E. M. Gutman, L. N. Petrov, G. V. Karpenko

Research output: Contribution to journalArticlepeer-review

Abstract

Electrochemical measurements on plastically deformed metals revealed the previously predicted [1] deformation-induced shifts toward positive surface charge values and clarified the character of the intensification of the electrochemical heterogeneity of deformed metal surfaces (localization of activated anodes as a result of mechanochemical phenomena). The deformation-induced increase in the differential capacitance of the double layer is attributable to an increase in the intensity of physical (electrostatic) adsorption of SO42- and HSO4- HSO4- anions on a positively charged surface in sulfuric acid solutions. A necessary (but not always sufficient) condition of the effectiveness of cation-active inhibitors of corrosion of plastically deformed metals is their stable chemisorption at potentials in the range of deformation-induced changes in the surface charge (of the order of tenths of a volt on the φ{symbol}-scale).

Original languageEnglish
Pages (from-to)105-110
Number of pages6
JournalSoviet Materials Science
Volume4
Issue number2
DOIs
StatePublished - 1 Mar 1969
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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