Thermal barrier coating high temperature erosion detection method

A thermal barrier coating and detection method technology, applied in the field of aero-engines, can solve problems such as difficult detection, low efficiency, and high cost, and achieve scientific and reasonable evaluation, improve detection efficiency, and save detection costs
CN109900577AActive Publication Date: 2019-06-18XIANGTAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIANGTAN UNIV
Publication Date
2019-06-18

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Abstract

A thermal barrier coating high temperature erosion detection method is disclosed. The method comprises the following steps of acquiring initial mass of a sample or an initial area of a thermal barriercoating on a sample surface; spraying a high temperature flame flow to the sample surface fixed at a preset position; when a sample surface temperature and the direction of the high temperature flameflow satisfy certain conditions, doping erosion particles into the high temperature flame flow, and carrying out high temperature erosion on the thermal barrier coating on the sample surface; obtaining residual mass of the sample after high temperature erosion or the remaining area of the thermal barrier coating of the sample surface; and calculating an erosion rate of the thermal barrier coatingof the sample surface based on the initial mass and the residual mass of the sample, or calculating a ratio of the remaining area of the thermal barrier coating and the initial area of the thermal barrier coating based on the initial area of the thermal barrier coating on the sample surface and the remaining area of the thermal barrier coating. Through simulating a high temperature erosion environment under a working condition of an aero-engine, high temperature erosion detection is performed on the thermal barrier coating, a reliable basis is provided for the research of a thermal barrier coating material and detection efficiency of the thermal barrier coating is improved.
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Description

technical field

[0001] The invention relates to the technical field of aero-engines, in particular to a detection method for high-temperature erosion of a thermal barrier coating. Background technique

[0002] Thermal barrier coating is a layer of ceramic coating, which is deposited on the surface of high-temperature metals or superalloys. And the interface oxide layer formed during preparation or service is used to protect the base material, so that the engine turbine blade made of it can operate at a high temperature of 1600 °C. The application of thermal barrier coating can not only improve the high temperature corrosion resistance of the substrate, further increase the operating temperature of the engine, but also reduce fuel consumption, improve efficiency, and prolong the service life of hot end components. According to statistics, the global thermal barrier coating market was valued at US$1.286 billion in 2016 and is expected to reach US$2.23 billion by 2024, reachin...

Claims

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