The working environment inside aerospace engines is extremely harsh, with temperatures reaching several thousand degrees Celsius and immense pressure. The addition of rhenium significantly enhances the high-temperature resistance of engine components. This enables the engine to withstand the intense combustion process within the combustion chamber, ensuring efficient fuel combustion and stable thrust output. Rhenium also improves the material’s fatigue and corrosion resistance. During prolonged flights, components must endure constantly fluctuating stresses and the erosive effects of the severe high-temperature environment. Both rhenium-containing coatings and rhenium-based iridium coatings substantially extend the service life of critical components, thereby enhancing the overall reliability and safety of the engine.