HEAT-RESISTANT COATING Russian patent published in 2008 - IPC C03C8/22 

FIELD: chemistry.

SUBSTANCE: invention relates to materials designed to protect the gas-turbine engine details made of heat-resistant iron-nickel alloys and corrosion-resistant steels from the high-temperature gas corrosion in operating at 900°C. The heat-resistant coating contains the following components, in mass percent: 16.0-25.0 of SiO₂; 3.5-4.0 of B₂O₃; 1.5-2.0 of Al₂O₃; 20.0-21.0 of BaO; 2.5-3.0 of CaO; 1.5-2.0 of TiO₂; 16.5-17.5 of Cr₂O₃; 4.0-5.0 of the mineral complex compound based on SiO₂; 0.5-1.0 of polymethylphenilsiloxane; 11.5-12.5 of silicone resin; 10.0-11.0 of xylene; 0.5-1.0 of SiB₄; 1.0-1.5 of MoO₃; 2.0-2.5 of Co₂O₃ The mineral complex compound based on SiO₂ has the following content: 56.25-58.05 of SiO₂; 34.3-35.1 of Al₂O₃; 1.0-1.2 of CaO; 1.0-1.1 of MgO; 2.5-2.6 of K₂O; 0.6-0.7 of Na₂O; 1.6-1.8 of TiO₂; 0.15-0.25 of SO₃; 0.8-1.0 of Fe₂O₃; or 35.25-40.05 of SiO₂; 34.3-35.1 of Al₂O₃; 1.0-1.2 of CaO; 1.0-1.1 of MgO; 2.5-2.6 of K₂O; 0.6-0.7 of Na₂O; 1.6-1.8 of TiO₂; 0.15-0.25 of SO₃; 0.8-1.0 of Fe₂O₃; 18.0-21.0 of SiB₄.

EFFECT: thermoresistance, thermodurability and strength of adherence of heat-resistant coating are increased.

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