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http://dx.doi.org/10.14773/cst.2022.21.6.495

Effects of Heat Treatment on Surface Properties of Aluminum 6061 Alloy After Anodization  

Seungmin, Lee (Department of Advanced Materials Engineering, Dong-eui University)
Chanyoung, Jeong (Department of Advanced Materials Engineering, Dong-eui University)
Publication Information
Corrosion Science and Technology / v.21, no.6, 2022 , pp. 495-502 More about this Journal
Abstract
Anodization is a representative electrochemical surface treatment method that can improve both heat resistance and corrosion resistance by forming an anodization film on the surface of the aluminum. However, these properties can be changed after an additional heat treatment process. In this study, Al 6061 was subjected to an anodization process at 60 V for 1 hour, 5 hours, or 9 hours. An additional heat treatment process was performed at 500 ℃ for 30 minutes. Field emission scanning electron microscopy (FE-SEM) analysis revealed that the thickness of the anodized film was increased in proportion to the anodization time. Both pore size and pore diameter of the anodized film was also increased after anodization. After an additional heat treatment process, there were no significant changes in the thickness, pore size, or pore diameter of the anodized film. Heat resistance was confirmed through thermal analysis and chemical resistance was evaluated with a potentiodynamic polarization test.
Keywords
Anodization; Aluminum 6061 alloy; Heat Treatment; Delta H; Corrosion resistance;
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Times Cited By KSCI : 15  (Citation Analysis)
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