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Proceedings Paper

CO2-metal coupling in solid-phase laser treatments
Author(s): Patricia Laurens; C. Dubouchet; Didier Kechemair; Frederic Coste; Lilian Sabatier
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Paper 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.

Paper Details

Date Published: 10 August 1994
PDF: 6 pages
Proc. SPIE 2097, Laser Applications, (10 August 1994); doi: 10.1117/12.183133
Show Author Affiliations
Patricia Laurens, ETCA-CNRS (France)
C. Dubouchet, PSA-ER (France)
Didier Kechemair, PSA-ER (France)
Frederic Coste, EIA Laser (France)
Lilian Sabatier, EIA Laser (France)

Published in SPIE Proceedings Vol. 2097:
Laser Applications
Artur A. Mak, Editor(s)

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