Tester for simulation and real-time test of gaseous corrosion failure of thermal barrier coating

Abstract

The invention discloses a tester for simulation and real-time test of a gaseous corrosion failure of a thermal barrier coating, belonging to the field of testers of high-temperature coating materials. The tester comprises a test platform, a corrosive gas loading system, a nondestructive testing system, a control system and the like, wherein the test platform is provided with a test sample clamping device and a sample chamber, the corrosive gas loading system is fixed on the test platform, and the nondestructive testing system and the control system are arranged below the test platform. The tester disclosed by the invention can be used to simulate a high-temperature corrosive service environment of the thermal barrier coating of aeroengine turbine blades, simulate a gas corrosion failure process when the coating takes service by means of controlling the type (such as H2S, SO2 and steam), pressure, corrosion temperature and other parameters of the corrosive gas, periodically detect the changes of coating impedance and damage acoustic emission signals during corrosion of the test sample through a complex impedance spectrometry system and an acoustic emission detection system, and analyze the evolution conditions of interface shapes and damages in the corrosion process of the test sample, thereby providing an important test platform for effectively evaluating the failure process and failure mechanism of the thermal barrier coating in the high-temperature gas corrosion environment.

Description

technical field [0001] The invention relates to a test device for simulating and real-time testing the gas corrosion failure of thermal barrier coatings, in particular to a test device for simulating the gas corrosion service environment of high-temperature components with thermal barrier coatings of aero-engines, and realizing multiple corrosion failures A test device for real-time testing of parameters belongs to the field of high-temperature coating material test devices. Background technique [0002] The aeroengine is the power plant of the aircraft and is known as the "heart" of the aircraft. In recent years, with the development of the aviation industry, the requirements for engine performance have been continuously improved, and at the same time, the operating temperature of high-temperature components inside the engine has become higher and higher. With the development of the fourth-generation fighter jets, the gas inlet temperature of aero-engines has reached 1700 °...

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Problems solved by technology

More importantly, in these devices, there is a lack of real-time detection and

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