Community Research and Development Information Service - CORDIS

Surface treatment of bulk ceramics and ceramic coatings by carbon dioxide laser

This research programme was successful mainly for zirconiacoatings. Laser sealing and strengthening of plasma sprayed zirconia coatings could generate high performance thermal and chemical barrier coatings. For diesel engines, the next step should be testing zirconia coated piston crowns and exhaust valves in operating conditions. Concerning gas turbine engines, further investigations are required, at temperatures above 1000 C, in terms of corrosion, oxidation, erosion and thermal cycling. The possible components are combustion chambers, first stage static vanes, and possible rotor blades.

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ALcatel Alsthom Recherche
Route de Nozay
91460 Marcoussis
France
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