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Proceedings Paper

Laser treatment for corrosion prevention
Author(s): Cecile Georges; Nadjib Semmar; Chantal Boulmer-Leborgne; Christian Perrin; Dominique Simon
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Paper Abstract

The laser surface treatment is applied to a multilayer component (copper alloy plated with two thin coatings, nickel and gold). The aim of the study is to melt the whole gold layer (thick < micrometers ) without damaging the underlying layers. The gold melting must be homogeneous and the process must be fast to avoid heat diffusion in the depths. For these reasons, the laser has been chosen for surface treatment. The application of this laser surface treatment is to improve the corrosion of resistance of electrical contacts due to columnar microstructure of gold deposited by electrolytic process. Tests of corrosion are carried out in the humid synthetic air containing low contents of pollutants (NO2, SO2 and Cl2). An numerical study has been realized to find the best laser conditions to melt the whole gold layer.

Paper Details

Date Published: 13 September 2002
PDF: 8 pages
Proc. SPIE 4760, High-Power Laser Ablation IV, (13 September 2002); doi: 10.1117/12.482056
Show Author Affiliations
Cecile Georges, Univ. d'Orleans (France) and CERI-CNRS (France)
Nadjib Semmar, Univ. d'Orleans (France)
Chantal Boulmer-Leborgne, Univ. d'Orleans (France)
Christian Perrin, CERI-CNRS (France)
Dominique Simon, CERI-CNRS (France)

Published in SPIE Proceedings Vol. 4760:
High-Power Laser Ablation IV
Claude R. Phipps, Editor(s)

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