大部分船体外壳通过喷漆、牺牲阳极和外加电流阴极保护方法来解决抗腐蚀问题。但是,这些传统的方法不是非常有效,因为船尾的船舵常暴露在严重的腐蚀环境中,例如潮汐、船行驶速度、气蚀和冲刷腐蚀。由于气泡的生成与破裂而产生的振荡波而导致的气蚀和冲刷腐蚀会对材料产生破坏。对热喷涂Al-Zn合金涂层进行了气蚀和电化学性能测试实验。然后,Al-Zn合金涂层表面涂刷F-Si封闭剂以提高Al-Zn涂层的耐海水电化学腐蚀和抗气蚀性能。结果表明,该封闭剂不但适用静态环境,而且适用于动态环境。 Most hull enclosures solve corrosion resistance issues by painting, sacrificing the anodes and applying current cathodic protection. However, these traditional approaches are not very effective because aft rudders are often exposed to severe corrosive environments such as tides, boat speed, cavitation and erosion erosion. Cavitation erosion and erosion erosion due to oscillation waves generated and broken by the bubble may destroy the material. The cavitation and electrochemical performance tests of thermal sprayed Al-Zn alloy coatings were carried out. Then, the Al-Zn alloy coating surface brushing F-Si sealing agent to improve the Al-Zn coating resistance to seawater electrochemical corrosion and cavitation resistance. The results show that the sealant is not only suitable for static environment, but also suitable for dynamic environment.