Laser Induced Reaction for Prebond Surface Preparation of Aluminum Alloys

Abstract

The potential of UV lasers irradiation as prebonding treatment of Al-2024 alloy was proved in a previous investigation (1) using a modified epoxy adhesive (2). Surface treatment of Al by excimer laser results in oxidation and morphological changes of the surface promoting shear adhesion strength when optimal laser conditions are applied. The adhesion strength achieved by the laser treatment is similar or higher compared to chemically treated Al. The objective of this research is to establish the effect of excimer ArF UV laser on the Al alloy surface microstructure and activity and to find its correlation with the macro behavior of shear strength, tensile strength, resistance to peel and failure locus. The treated system was adhesively bonded with structural adhesives and durability tests were performed.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1994
Accession Number
ADA359608

Entities

People

  • Joseph Zahavi

Organizations

  • Technion – Israel Institute of Technology

Tags

DTIC Thesaurus Topics

  • Adhesion
  • Adhesive Bonding
  • Adhesives
  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Chemical Synthesis
  • Chemistry
  • Contracts
  • Failure Mode And Effect Analysis
  • Lasers
  • Metals
  • Spectra
  • Spectroscopy
  • Surface Chemistry
  • Surface Finishing
  • Ultraviolet Lasers

Fields of Study

  • Materials science

Readers

  • Optical Physics and Photonics.
  • Powder metallurgy of Titanium alloys.
  • Surface Coatings Technology.

Technology Areas

  • Directed Energy