王伟  黄燕滨 徐可可

（装甲兵工程学院，北京 100072）

　　摘要：本文针对海洋环境下7A52铝合金干湿周浸使用过程中存在的电偶腐蚀现象进行研究，测试了干湿周浸情况下7A52与38CrSi、5A06之间的电偶电流及电偶电压，使用SEM对腐蚀后的表面进行了分析，实验发现，干湿周浸情况下，试样表面腐蚀产物较多且堆积比较松散，试样的腐蚀速度比全浸更加严重。

　　关键词：7A52,电偶腐蚀，干湿周浸

　　Study on Galvanic Corrosion in Cyclic Wet-dry Immersion Test of 7A52 Aluminium Alloy

　　WANG Wei  HUANG Yan-bin XU Ke-ke

　　（Academy of Armored Forces Engineering,Beijing 100072;）

　　Abstract: In this paper, The galvanic corrosion of 7A52 in after cyclic wet-dry immersion is been studied. We have studied 38CrSi and 5A06 that often been used arrange in pairs or groups with 7A52 .The galvanic current and galvanic voltage of two different materials is been tested. We have studied the surface of samples after corrosion use SEM. We can get that in cyclic wet-dry immersion , the structure of corrosion product is loose and more gap , the corrosion rate is more serious.

　　Key words:7A52; galvanic corrosion;cyclic wet-dry immersion test

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