Corrosion Behavior of the Rare Earth Sealing Anodized Coating on Aluminum Alloy LY12

材料科学技术（英文）, 2002, 18(5): 471-474.

^1, , ^2, , ^3,

1.Laboratory for Solid State Ionics, Institute of Physics, Chinese Academy of Sciences, P.O.Box 603, Beijing 100080, China

2.State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

3.State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

基金项目: This work has been carried out with the support of the Chinese Postdoctoral Science Fund and the Special Funds for the Major State Basic Research Projects(G19990650)

Corrosion Behavior of the Rare Earth Sealing Anodized Coating on Aluminum Alloy LY12

Keywords： LY12 alloy

Technological process of rare earth sealing anodized LY12 (2024) alloy is introduced. Corrosion behavior of the filmwas studied by polarization curves and electrochemical impedance spectroscopy (EIS). The results showed that thecoating remained passivity at the potential range from the open circuit potential (-780 mV) to -250 mV in NaClsolution. When the potential exceeded -200 mV, corrosion reaction happened on the coating. the results of ElSanalysis was consistent with the results of polarization curves.

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Corrosion Behavior of the Rare Earth Sealing Anodized Coating on Aluminum Alloy LY12

参考文献