Effect of Surface Exposure Time (Set) on Strength of Adhesive Bonds to Aluminum

Abstract

Surface exposure times (SET) at 23 C and 50% RH for 2024-T3 aluminum subsequently bonded with EC-2214 adhesive did not affect the bond strength for SET up to 30 days. SET at 54 C and 95 + or - 5% RH gave much lower bond strengths that did not further change with increasing SET. The difference in strength is believed to be due to the formation of a hydrated aluminum oxide on the aluminum surface at 54 C and 95 + or - 5% RH. This hydrated oxide functions as a weak boundary layer. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1979
Accession Number
ADA077107

Entities

People

  • David W. Levi
  • Elizabeth A. Garnis
  • Marie C. Ross
  • Natalia Petrianyk
  • Raymond F. Wegman

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Adhesives
  • Air Force
  • Air Force Facilities
  • Aluminum
  • Aluminum Alloys
  • Aluminum Oxides
  • Bonding
  • Boundary Layer
  • Classification
  • Composite Materials
  • Engineering
  • Films
  • Manufacturing
  • Materials
  • Materials Laboratories
  • Mechanics
  • Security

Readers

  • Materials Science and Engineering.
  • Mathematics or Statistics
  • Structural Health Monitoring of Composite Structures.