Accession Number:

ADA099702

Title:

Metallic Coatings for Graphite/Epoxy Composites

Descriptive Note:

Final rept. 16 Oct 78-31 Jul 80 on Phase 2

Corporate Author:

GRUMMAN AEROSPACE CORP BETHPAGE NY

Report Date:

1980-08-01

Pagination or Media Count:

82.0

Abstract:

Metallic coating systems for graphiteepoxy laminated aircraft structures were developed to provide protection against moisture penetration, electromagnetic interference EMI, paint strippers and lightning strikes. Foil coatings and pressed powder coatings were evaluated to assess their resistance to these hostile environments. The foil coatings provided a significant reduction in the moisture penetration and the associated strength loss of the laminate after exposure to humidity and humidity-thermal spiking. Techniques were developed for the application of foil coatings to graphiteepoxy laminates. Solid and perforated aluminum foil were applied to cured laminates in a secondary bonding operation. Sulfur dioxidesalt spray testing performed on foil-coated laminates did not indicate a severe corrosion problem.

Subject Categories:

  • Aircraft
  • Coatings, Colorants and Finishes
  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE