Abstract
In the aerospace industry, engines are exposed to extreme stress during long-term operation in high-temperature oxidation atmospheres and gas-corrosive environments. To extend the engine’s service life, it is often necessary to apply high-temperature protective coatings to enhance their resistance to high-temperature oxidation and thermal corrosion. However, in harsh, highly corrosive, and high-temperature environments, such as medium environments, as well as high vibrations and flow rates, these protective coatings can often suffer from damage and failure. This research work aims to summarize the causes of failure in high-temperature protective coatings, discuss the failure mechanisms in detail, and address issues such as interdiffusion, matching of thermal expansion coefficients, wear resistance, and erosion resistance in the design of these coatings. The findings will provide theoretical support for failure analysis, life prediction, and new material design of high-temperature protective coatings.
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