METHOD FOR TESTING HIGH-TEMPERATURE GAS CORROSION, ABRASIVE AND TEMPERATURE RESISTANCE OF MATERIALS AND COATINGS OF GAS TURBINE ENGINES IN HIGH-SPEED GAS FLOWS Russian patent published in 2022 - IPC G01M15/14 G01N17/00 G01N25/24 G01N25/58 

FIELD: testing.

SUBSTANCE: method for testing high-temperature gas corrosion, abrasive and temperature resistance of materials and coatings of gas turbine engines in high-speed gas flows relates to the field of aerospace and power engineering and can be used for applying regulated corrosion damage, simultaneous testing of corrosion, abrasive and temperature resistance of materials and alloys in the environment of combustion products of liquid and/or gas fuels contaminated with sulphur, carbon, nitrogen oxides, dust, water vapours, hydrogen chloride, salts and other corrosive agents. Proposed is a method for testing high-temperature gas corrosion, abrasive and temperature resistance of materials and coatings of gas turbine engines in high-speed gas flows, including placing the samples under study in a rotary cassette rotating at a preset speed and equipped with a cooling air intake collector, supplying and adjusting the flow of combustible gas in the reactor, supplying and adjusting the flow of air for cooling the samples under study from the outside and via internal channels by means of a compressed air distribution system supplying air required for internal cooling of the samples into the rotary cassette, and cold air to the surface of the samples under study, introducing abrasive particles into the saline solution further injected into the reactor, putting and removing the samples under study into and out of a flame torch by means of a server electric engine with a drive, placed on a movable platform moving along the rails located perpendicular to the flame flow. The motion of the drive is therein set so that the samples under study are in the heating area in one extreme position and in the cooling area in the other extreme position. One of the gases - propane, hydrogen or acetylene is therein used as a combustible gas for high temperature testing, and the abrasive particles constitute crushed powders of silicon dioxide and/or corundum and/or iron and/or volcanic ash.

EFFECT: provided possibilities of applying regulated corrosion damage, simultaneous testing of corrosion, abrasive and temperature resistance in the range of 500 to 2,350°C of alloy samples, including gas turbine blades cooled by air via internal channels, in the environment of high-speed flows of combustion products of liquid and/or gas fuels contaminated with sulphur, carbon, nitrogen oxides, dust, water vapours, hydrogen chloride, salts and other corrosive agents.

3 cl, 1 dwg