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The splash zone of offshore wind turbines is the area with the most severe corrosion in marine environments; its corrosion rate can be 20 times higher than that in inland industrial areas, and even 3 to 10 times higher than that in fully submerged areas. The core reason lies in the strong coupling of multiple corrosion factors, which can be analyzed from the following aspects: First, the core corrosion mechanism: multi-factor \"combined attack\". The splash zone is located at the highest point affected by ocean waves and is exposed to a combined environment of alternating dry and wet conditions, high salt fog, abundant oxygen supply, and mechanical stress, thereby creating a \"corrosion accelerator\": 1. Alternating dry and wet conditions: a \"multiplier\" for corrosion rate. The seawater film in the splash zone remains wet for long periods of time (up to several hours per occurrence); during drying, salts such as NaCl crystallize, resulting in a high-concentration electrolyte solution that accelerates the electrochemical corrosion of metals. With a high frequency of wet-dry cycles (dozens of times per day), the metal surface undergoes repeated processes of absorption and loss of moisture. As a result, corrosion products such as rust are unable to form a stable protective layer; instead, they keep peeling off, exposing fresh metal that continues to corrode. Studies show that steel corrodes most severely at a humidity of 70%, and the alternating dry and wet conditions in the splash zone keep the local humidity at the critical level for an extended period; as a result, the corrosion rate there is 2-3 times higher than that in areas that remain continuously wet.