Techniques for Studying Initial Film Formation on Newly Generated Surfaces of Passive Metals

Abstract

Development of an understanding of stress corrosion cracking and corrosion fatigue requires a knowledge of the electrochemical behavior of the new metal surface generated at the crack tip. Newly generated metal surfaces have very different electrochemical properties from the steady state exterior surfaces of the metals which are covered by oxide films. The purpose of this paper is to review new surface experiments reported in the literature and examine advantages and limitations of the various techniques. Techniques to obtain new metal surfaces may be divided into five categories: (1) Form droplets of liquid metal, (2) scrape or abrade a surface, (3) strain a wire, (4) rapidly shear a wire, and (5) rapidly fracture a notched specimen.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1977
Accession Number
ADA052934

Entities

People

  • Theodore R. Beck

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Crack Tips
  • Cracks
  • Current Density
  • Electrodes
  • Fast Fractures
  • Films
  • Material Degradation Processes
  • Materials
  • Materials Science
  • Measurement
  • Oxide Films
  • Oxides
  • Steady State
  • Stress Corrosion
  • Stress Corrosion Cracking

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.
  • Systems Analysis and Design