CO2-metal coupling in solid-phase laser treatments

Patricia Laurens; C. Dubouchet; Didier Kechemair; Frederic Coste; Lilian Sabatier

doi:10.1117/12.183133

10 August 1994 CO₂-metal coupling in solid-phase laser treatments

Patricia Laurens, C. Dubouchet, Didier Kechemair, Frederic Coste, Lilian Sabatier

Proceedings Volume 2097, Laser Applications; (1994) https://doi.org/10.1117/12.183133
Event: Laser Optics, 1993, St. Petersburg, Russian Federation

Abstract

In order to control CO₂ laser surface treatments, a precise knowledge of the CO₂ radiation-surface coupling is required. For this purpose, numerical identification of the absorption coefficient, either with temporal resolution in non stationary 1D configuration or with spatial resolution in a stationary 2D configuration, were achieved from thermal cycles measurements and simulations. Evolutions of the coupling during laser treatment were studied both in the case of coated steel hardening (graphite and manganese phosphate coatings) and in the case of solid state nitridation of titanium alloys. Results were interpreted in terms of chemical evolutions of the surface; moreover, the influence of a reflective shielding gaz device covering the substrate was also pointed out.

Citation Download Citation

Patricia Laurens, C. Dubouchet, Didier Kechemair, Frederic Coste, and Lilian Sabatier "CO₂-metal coupling in solid-phase laser treatments", Proc. SPIE 2097, Laser Applications, (10 August 1994); https://doi.org/10.1117/12.183133

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