Effects of current density on the corrosion behaviour of anodized aluminum alloy in FeCl3 solution
CUI Xin-fang, QIAO Ying-jie, LIU Rui-liang, LIAN Xiao-zheng
School of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
Abstract:
In the present study, 2024 aluminum alloy specimen was anodized in acetic acid and oxalic acid electrolytes. Effects of the current density on the microstructure and corrosion resistance of anodic oxide film have been investigated. The steady voltage increases from 11 V to 71 V with the current density increase from 05 A／dm2 to 25 A／dm2. The SEM reveals that there are pits, cavities and irregular pores in the anodic film, and their size and morphologies change with the current density. The corrosion resistance of the film was evaluated by potentiodynamic polarization and electrochemical impedance in 01 mol／L FeCl3 solution at room temperature. The results show that corrosion resistance of the anodic oxide film changes with the current density, and the anodic film formed at the current density of 10 A／dm2 has the best corrosion resistance. These observations indicate that anodic film formed at J=10 A／dm2can serve as a support material for the Cu micrometallic patterns.
Key words: aluminum alloy anodic oxide film corrosion resistance FeCl3 solution
DOI：10.11916/j.issn.1005-9113.2012.03.010
Clc Number:TG 1462
Fund:
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Effects of current density on the corrosion behaviour of anodized aluminum alloy in FeCl3 solution
本站小编 哈尔滨工业大学/2019-10-23
相关话题/Effects current density corrosion behaviour
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