C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 41/87 (2006.01) C04B 41/50 (2006.01) C04B 41/52 (2006.01) C04B 41/89 (2006.01)
Patent
CA 2151948
The invention relates to a process for obtaining refractory antioxidative coatings on carbon-based materials and articles operating in an oxidizing environment at temperatures of up to 2000°C under thermal cycling and high-speed gas stream conditions. The process comprises the heat-treatment of the surface to be protected in silicon vapors and is characterized in that prior to said silicon vapor treatment, the surface to be protected is covered with a layer of the composition consisting of HfB2 + C powdery filler and a carboxymethyl cellulose-based binder, followed by drying under normal conditions till it is completely dry. The process is intended for oxidation protection of structural elements and articles in metallurgy, aircraft, and other industries.
Demin Alexander Victorovich
Kostikov Valery Ivanovich
Kravetzkii Gennady Alexandrovich
Kuznetzov Andrey Vasiljevich
Rodionova Valeriya Veniamonovna
Aerospatiale Societe Nationale Industrielle
Goudreau Gage Dubuc
Nii Grafit Research Institute
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