Laser Induced Reaction for Prebond Surface Preparation of Aluminum Alloys.;Stage 2
Abstract
The potential of excimer ArF UV lasers as prebonding treatment technique for Al-2O24 alloy adherends was demonstrated in a previous investigation(1) using a room temperature cured modified epoxy adhesive(2). Surface treatment of the Al adherend by excimer laser causes the removal of weak surface boundary layers, oxidation and morphological changes of the surface. Those surface modifications improve adhesion strength at optimal laser conditions, as expected from theoretical considerations of adhesion mechanisms (mechanical interlocking, physical and chemical bonding,etc.). The second stage of this research (0002 of the contract) is summarized in this report. The results of this stage present the correlation between the various laser parameters and the adhesive: shear strength in order to achieve the maximum shear strength for the structural adhesives specified during the first stage (0001 of the contract). The effect of time interval between laser irradiation and adhesive bonding (open time) is also reported.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 28, 1993
- Accession Number
- ADA359890
Entities
People
- A. Buchman
- H. Dodiuk
- J. Zahavi
- M. Rotel