Laser treatment for corrosion prevention

Cecile Georges; Nadjib Semmar; Chantal Boulmer-Leborgne; Christian Perrin; Dominique Simon

doi:10.1117/12.482056

13 September 2002 Laser treatment for corrosion prevention

Cecile Georges, Nadjib Semmar, Chantal Boulmer-Leborgne, Christian Perrin, Dominique Simon

Proceedings Volume 4760, High-Power Laser Ablation IV; (2002) https://doi.org/10.1117/12.482056
Event: International Symposium on High-Power Laser Ablation 2002, 2002, Taos, New Mexico, United States

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.

Citation Download Citation

Cecile Georges, Nadjib Semmar, Chantal Boulmer-Leborgne, Christian Perrin, and Dominique Simon "Laser treatment for corrosion prevention", Proc. SPIE 4760, High-Power Laser Ablation IV, (13 September 2002); https://doi.org/10.1117/12.482056

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