王偉  黃燕濱 徐可可

（裝甲兵工程學院，北京 100072）

　　摘要：本文針對海洋環境下7A52鋁合金干濕周浸使用過程中存在的電偶腐蝕現象進行研究，測試了干濕周浸情況下7A52與38CrSi、5A06之間的電偶電流及電偶電壓，使用SEM對腐蝕后的表面進行了分析，實驗發現，干濕周浸情況下，試樣表面腐蝕產物較多且堆積比較松散，試樣的腐蝕速度比全浸更加嚴重。

　　關鍵詞：7A52,電偶腐蝕，干濕周浸

　　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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