对“探索者号”深海水下机器人用材ＰＯＤ９１９与ＬＤ３１铝合金阴极保护进行模拟实验研究的基础上，根据机器人的内部结构的紧密性与复杂性，对机器人的阴极保护进行了设计，选择适当形状的牺牲阳极，有效保护水下机器人免受海水腐蚀.
The research of corrosion behavior and cathodic protection of POD919 and LD31 aluminum alloys, for the deep-sea submarine robot was carried out in 3. 5% NaCl solu- tion. The related electrochemical parameters of three types sacrificial anodes have been de- termined by constant current discharge method. The results showed that one kind of zinc al- loy sacrificial anode is suitable to the protection of submarine robot. For the compactness and completeness of the inner structure of the robot, the effects of crevice dimension on ca- thodic protection have been studied also. The results showed that smaller the crevice dimen- sion the shorter the protection distance. Based on the achieved results, the design and regu- lation of the cathodic protection for robot has been suggested.
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