On the Limiting Electrode Potential in Cavities and Its Role in Deciding between SCC (Stress Corrosion Cracking) and HC (Hydrogen Cracking) in Metals.

Abstract

This paper reviews the conditions needed to determine whether aqueous-phase crack propagation occurs due to hydrogen (HC) or due to anodic metal dissolution (SCC). It shows that the main question to be answered is whether overlap of the electrode potential regions of the metal dissolution and hydrogen evolution reactions increases or decreases with increasing distance x into a cavity or crack. It also reviews the theoretical and experimental basis of the recently discovered existence of a limiting electrode potential in a cavity, a finding which is paramount to the goal of this paper.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1984
Accession Number
ADA138585

Entities

People

  • H. W. Pickering

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Anodic Polarization
  • Base Metal
  • Chemical Analysis
  • Chemical Engineering
  • Chemistry
  • Crack Tips
  • Earth Sciences
  • Engineering
  • Geography
  • Materials
  • Materials Science
  • Military Research
  • Mining Engineering
  • Ores
  • Physics Laboratories
  • Stress Corrosion
  • Stress Corrosion Cracking

Readers

  • Economics
  • Electrochemical Engineering/ Fuel Cell Technologies
  • Materials Science and Engineering.