Conductive, Lusterless Coatings for Light Metals

Abstract

A metallic conductive, lusterless plating system with improved corrosion durability developed for aluminum was the basis for a program on the improvements of the corrosion durability of magnesium. A composite of electroplates containing either a fused tin or a cobalt-nickel alloy was effective for inhibiting corrosion pits from penetrating through the coating into the magnesium substrates. The efficacy of the coating was not completely demonstrated because of inconsistent quality (adhesion) of copper strike on magnesium, however. A technique proposed for improving the quality of the copper strike includes a cyanide treatment after the application of a zinc displacement coating on magnesium, to improve the adhesion of the subsequent copper strike.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1972
Accession Number
AD0753360

Entities

People

  • C. H. Layer
  • G. R. Schaer
  • J. G. Beach
  • W. H. Safranek

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Anodic Polarization
  • Cobalt Alloys
  • Composite Materials
  • Corrosion
  • Material Degradation Processes
  • Materials
  • Materials Processing
  • Measurement
  • Nickel Alloys
  • Protective Coatings
  • Resistance
  • Sodium Compounds
  • Sodium Hydroxide
  • Substrates
  • Test And Evaluation
  • Tin Coatings
  • Zinc Coatings

Fields of Study

  • Materials science

Readers

  • Surface Coatings Technology.
  • Surface Engineering/Surface Coating Technology.