Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1989-12-15
1992-04-07
Lusignan, Michael
Coating processes
With post-treatment of coating or coating material
Heating or drying
427294, 4273762, 4273978, 4274191, 4274197, 428289, 428367, 428368, 428389, 428408, 501 88, B05D 302
Patent
active
051026988
ABSTRACT:
A process is provided for obtaining an article which is made of a carbon-containing composite material and which is protected against oxidation. The composite material, which is obtained by densifying a porous fibrous texture with a matrix and which exhibits a residual internal porosity, is impregnated under a vacuum with an alkaline compound in a liquid solution. The article is dried and heat-treated at a temperature sufficient to cause the alkaline compound to line the surfaces of the internal pores, thereby constituting the residual porosity and forming a continuous auto-cicatrizing internal protective coating. An additional external protective layer comprised of a wear- and oxidation-resistant material may be applied.
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Cavalier jean-Claude
Nale Alain
Lusignan Michael
Owens Terry J.
Societe Europeenne de Propulsion
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