一、前言当今船舶的推进器,水轮机和水泵叶片,内燃机的缸套等构件都面临空泡腐蚀问题。这是由于这些构件在高速流动水环境中,局部产生空泡破损和电化学腐蚀联合作用所致。空泡腐蚀随流速增加或振幅的增加而加剧。我们采用振动空蚀试验机,对碳钢试样进行空泡腐蚀及在阴极保护下的空泡腐蚀试验。考察外加电流对空泡腐蚀的保护效果。二、实验方法 I. INTRODUCTION In today’s ships, thrusters, turbines and water pump blades, cylinder liner and other components of internal combustion engines are all faced with cavitation corrosion problems. This is due to the combination of cavitation damage and electrochemical corrosion caused by these components in a high-speed flowing water environment. Cavitation corrosion aggravates with increasing flow rate or amplitude. We use the vibration cavitation test machine, cavitation erosion of carbon steel samples and cavitation corrosion test under the protection of the cathode. Inspect the applied current to prevent cavitation erosion. Second, the experimental method