Spray gun device for simulating high-temperature erosive corrosive service environment of thermal barrier coating

Abstract

The invention discloses a spray gun device for simulating a high-temperature erosive corrosive service environment of a thermal barrier coating, belonging to the field of simulators of the service environments of the thermal barrier coating. The spray gun device comprises a flame channel, a cooling channel, an erosive particle input system, a corrosive substance input system and an ignition system, wherein the flame channel, the cooling channel, the erosive particle input system, the corrosive substance input system and the ignition system are arranged inside a high-temperature flame spray gun; the movement of the high-temperature flame spray gun is controlled by a servo motor; and the erosive particle input system thrusts particles into an erosive particle channel inside the spray gun through compressed air. The spray gun device disclosed by the invention can be used to simulate single or any two or three service environments of alternative cycle of temperature, repeated impacts of hard particles, ceaseless erosion of corrosive gas and the like in a high-performance aeroengine, is favorable for overcoming the defect that the traditional thermal barrier coating environment simulator can only simulate a single service environment without addition of erosion of the hard particles, and provides an important test platform for effectively evaluating a fatigue failure process and a failure mechanism of a high-temperature part in the service environment with integration of high-temperature thermal cycle, erosion and corrosion.

Description

technical field [0001] The invention relates to a spray gun device for simulating a thermal barrier coating service environment of high temperature, erosion and corrosion, in particular to a loading device capable of realizing the integration of three service environments, and belongs to the field of thermal barrier coating service environment simulation devices . Background technique [0002] With the rapid development of aviation and aerospace technology, people's requirements for aviation materials are also constantly increasing, and the requirements for the operating temperature of high-temperature materials are also getting higher and higher. At present, advanced high-temperature alloys or single crystal materials are far from meeting the needs of advanced aero-engines. Due to the urgent needs of rapid development, thermal barrier coatings have become the key materials for high-temperature components on modern aero-engines because of their advantages such as high heat i...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the thorny problems existing in the simulation of the service environment of the thermal barrier coating, and to provide a spray gun device for simulating the high temperature, erosion and corrosion service environment of the thermal barrier coating, which can realize the thermal barrier coating The simulation of high-temperature, corrosion, and erosion service environments provides an important experimental platform for effectively evaluating the fatigue failure process and failure mechanism of high-temperature components in complex service environments

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