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Titanium thermodiffusional nitriding by CO2 laser: process parameters controlling the nitride growth
Author(s): Herve L'Enfant; Patricia Laurens; Marie Christine Sainte Catherine; Jacques Amouroux
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Paper Abstract

Solid state nitriding of titanium under cw CO2 laser was investigated. The nitriding kinetics were studied in the case of CO2 laser treatment in isothermal conditions, and were compared to those obtained by using a conventional heating system. Identical kinetics rate constants and activation energy were obtained; therefore CO2 irradiation of the titanium surface did not influence nitride growth. Studying nitriding treatment in non isothermal conditions showed that high heating rates induced modifications of the nitride morphology. At last, we investigated the evolution of the CO2-surface coupling during the nitriding treatment. It was found that it depended only on the surface temperature and the substrate surface roughness since the growth of a few micrometers which nitride layer did not modify the coupling.

Paper Details

Date Published: 23 September 1996
PDF: 9 pages
Proc. SPIE 2789, High-Power Lasers: Applications and Emerging Applications, (23 September 1996); doi: 10.1117/12.251165
Show Author Affiliations
Herve L'Enfant, Lab. d'Applications des Lasers de Puissance/ETCA (France)
Patricia Laurens, Lab. d'Applications des Lasers de Puissance/ETCA (France)
Marie Christine Sainte Catherine, CREA/ETCA (France)
Jacques Amouroux, Lab. de Genie des Procedes Plasma/ENSCP (France)

Published in SPIE Proceedings Vol. 2789:
High-Power Lasers: Applications and Emerging Applications
Georges Sayegh; Michael R. Osborne, Editor(s)

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