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The corrosion behavior of 7A09 alloys exposed to an industrial atmosphere for 36 months was studied by weight loss method, morphology observation, electrochemical method, and loss in mechanical properties. Under the condition of exposure to an industrial atmosphere, the 7A09 alloy suffers obvious pitting corrosion and intergranular corrosion (IGC), and a charge transfer process controls the corrosion...
Atmospheric corrosion behavior of 3A21 Al‐Mn alloy and 7A09 Al‐Zn‐Mg‐Cu alloy were investigated and compared. Electrochemical results, together with corrosion morphology characterization, suggest that in tropical coastal atmosphere, 3A21 and 7A09 alloys suffer pitting corrosion and intergranular corrosion (IGC), respectively, and 3A21 alloy shows better corrosion resistance and stronger repassivating...
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