Ion Vapour Deposited (IVD) Aluminium Coatings for the Corrosion Protection of High Strength Steel

Abstract

Extensive metallographic, corrosion and hydrogen embrittlement tests have been carried out with high strength steel sheet coated with ion vapour deposited (IVD) aluminum. Metallography showed that the thickness of the as- deposited IVD coatings was not uniform and that the coatings contained extensive microporosity. The application of glass bead blasting after coating, significantly reduced the porosity but did not remove it completely. The IVD coatings were found to be effective in preventing corrosion of the steel substrate provided the coating was sufficiently thick and its porosity low. Exposure of IVD coated steel to aqueous environments was found to produce hydrogen embrittlement of the high strength steel substrate under certain conditions.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1991
Accession Number
ADA242738

Entities

People

  • B. R. Hinton
  • W. J. Pollock

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Aluminum Coatings
  • Civil Aviation
  • Coatings
  • Corrosion
  • Corrosion Resistance
  • Engineering
  • Ferrium
  • Hydrogen Embrittlement
  • Materials
  • Materials Engineering
  • Sodium Compounds
  • Sodium Hydroxide
  • Standards
  • Strain Rate
  • Test Equipment

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Surface Engineering/Surface Coating Technology.