HEAT-RESISTANT COATING Russian patent published in 2006 - IPC C03C8/22 

FIELD: mechanical engineering; production of materials for protection of details of the turbine engines against the heat-resistant gaseous corrosion.

SUBSTANCE: the invention is pertaining to the field of mechanical engineering, in particular, to production of materials for protection of details of the turbine engines (the combustion chambers, flame tubes, gas ducts, etc.) made out of the refractory alloys against the heat-resistant gaseous corrosion in the process of operation at the temperature of 1000°C and above. The technical result of the invention is creation of the coating with the increased temperature resistance, the cohesive strength, the thermal stability at the operation temperature of 1000°C - for the coating being formed at the room temperature. The heat-resistant coating contains (in mass %):_{SiO2 - 56.25-58.05, Al2О3 - 34.3-35.1, CаО - 1.0-1.2, MgO - 1.0-1.1,K2О - 2.5-2.6,Na2O - 0.6-0.7,TiO2 - 1.6-1.8,SO3 - 0.15-0.25,Fe2O3 -0.8-1.0 orSiO2 - 35.25-40.05,A12O3 -34.3-35.1, CаО - 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,SiB4 - 18.0-21.0, polymethylphenylsiloxane, silicone resin. At that the heat-resistant coating additionally contains SiB4, xylene at the following ratio of the components (in mass %):SiO2 - 20.0-33.0, B2О3 - 4.0-5.0,Al2О3 - 7.0-8.0, BаО - 7.0-8.0, CаО - 4.0-5.5, MgO - 0.5-1.5,TiO2 - 1.0-2.2,Cr2O3 - 15.0-17.0, the mineral complex compound on the basis ofSiO2 - 5.0-6.0, polymethylphenylsiloxane - 0.5-0.8, silicone resin - 11.5-12.5, xylene - 10.0-11.0,SiB4 - 1.5-2.5. Application of the coating being formed at the room temperature ensures reduction of the power input and the labor input at the repair operations under the production process conditions and the increased by 1.5 - 2 times reliability of operation of the details with the coating. The coating ensures ecological purity of the production.}

EFFECT: the invention ensures the coating increased temperature resistance, cohesive strength, thermal stability at the operation temperature of 1000°C, significantly increased operational reliability of the details with the coating, reduction of the power and labor inputs at the repair operations during production process.

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