Hydrogen Embrittlement of Cadmium-Plated Ultra-High Strength Steels in Paint Strippers

Abstract

Slow strain rate and electrochemical tests were applied to elucidate the mechanism of hydrogen embrittlement of high strength 4340 steel by paint strippers. Results show that hydrogen embrittlement does not occur unless the steel is cadmium plated and is due to hydrogen generation produced by the establishment of a galvanic couple between the steel and the cadmium in the paint stripper. The amount of embrittlement is seen to increase as the galvanic potential becomes increasingly more negative compared with the potential for the reduction of water to produce hydrogen. The role of inhibitors in the prevention of hydrogen embrittlement is discussed. Additional keywords: Paint remover; Galvanic corrosion; Cadmium coatings; Aircraft; Australia.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1984
Accession Number
ADA156962

Entities

People

  • W. J. Pollock

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Corrosion
  • Department Of Defense
  • Engineering
  • Ferrium
  • Galvanic Corrosion
  • Heat Treatment
  • Hydrogen Embrittlement
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Engineering
  • Production Engineering
  • Standards
  • Strain Rate
  • Stress Tests

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Surface Coatings Technology.