HEAT-RESISTANT COATING Russian patent published in 2005 - IPC

FIELD: mechanical engineering.

SUBSTANCE: invention relates to coatings to protect parts of exhaust system of gliders made from heat-resistant alloys and corrosion-resistant steels against high-temperature gas corrosion under operation at temperatures up to 600°C. Coating contains, wt %: SiO₂ 20.0-36.5, B₂O₃ 4.0-5.0, Al₂O₃ 5.0-6.0, BaO 5.0-6.0, CaO 2.0-4.0, MgO 0.5-1.5, TiO₂ 1.5-2.5, Cr₂O₃ 15.0-17.0, Na₂O 0.6-0.7, P₂O₅ 0.5-1.5, sodium liquid glass 23.0-27.0, and mineral silica-based complex compound 5.0-6.0 composed of, wt %: SiO₂ 56.25-58.05, Al₂O₃ 34.3-35.1, CaO 1.0-1.2, MgO 1.0-1.1, K₂O 2.5-2.6, Na₂O 0.6-0.7, TiO₂ 1.6-1.8, SO₃ 0.15-0.25, Fe₂O₃ 0.8-1.0, or, instead of SiO₂ 56.25-58.05, SiO₂ 35.25-40.05 and SiB₄ 18.0-21.0. Reliability of operation with thus coated parts is increased by a factor of 1.5-2.

EFFECT: increased heat resistance and adhesion strength.

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