Corrosion Resistance of GH2150A Compressor Blade for Shipborne Aeroengine

The high temperature, high humidity, and high salt spray in the marine environment pose a serious corrosion risk to carrier-based aircraft engines. The compressor is the main channel through which the atmosphere flows through the engine, and its blades are directly eroded and corroded by the high pressure, high speed, and humid marine atmosphere, resulting in particularly prominent damage and failure. According to the service conditions of high-pressure compressor blades in a certain type of carrier-based aircraft engine, 192 hours of acid salt spray testing, 680 hours of acid atmospheric corrosion testing, and 100 hours of 600 °C salt coating hot corrosion testing were conducted on high-pressure compressor blades in GH2150A and GH2150A+ chemical passivation states. The results indicate that both types of leaves exhibited good salt spray resistance and acidic atmospheric corrosion performance. However, after 20 hours of salt-hot corrosion testing, both types of blades showed red corrosion spots, and after 60 hours of testing, the entire blade was corroded. Among them, the chemically passivated blade had less loss of quality after 100 hours of salt-hot corrosion testing compared to the original blade, indicating that chemical passivation could hinder corrosion to a certain extent, but its protective ability was limited.