Monododecyl Phosphate Film on LY12 Aluminum Alloy: pH-Controlled Self-Assembly and Corrosion Resistance

被引：64
|
作者：
Pan, Chengcheng [1 ]
Wang, Xianzong [2 ]
Behnamian, Yashar [3 ]
Wu, Zhong [1 ]
Qin, Zhenbo [1 ]
Xia, Da-Hai [1 ]
Hu, Wenbin [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Composite & Funct Mat, Tianjin 300354, Peoples R China
[2] Northwestern Polytech Univ, Ctr Adv Lubricat & Seal Mat, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
[3] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2020年 / 167卷 / 16期
基金：
中国国家自然科学基金;
关键词：
self-assembled film; monododecyl phosphate; aluminum alloy; SULFUR INDUCED CORROSION; PHOSPHONIC ACID; SURFACE MODIFICATION; PROTECTION PERFORMANCE; ALKANEPHOSPHONIC ACIDS; AQUEOUS-SOLUTION; METAL-OXIDES; MONOLAYERS; TITANIUM; XPS;
D O I：
10.1149/1945-7111/abd3bb
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
An LY12 aluminum alloy was coated with a self-assembled dodecyl phosphate film by employing a novel surface-modification protocol based on the chemisorption of sodium monododecyl phosphate from aqueous solution. The effect of solution pH on the self-assembled film properties was documented, and the corrosion resistances of the self-assembled film in a Cl--containing solution and in a marine atmosphere were evaluated by electrochemical impedance spectroscopy and corrosion morphology analysis. Unlike self-assembled film formed in acidic and alkaline conditions, dodecyl phosphate films formed in neutral solution exhibited a multilayer structure with greater thickness and superior corrosion resistance due to the strong chemisorption and electrostatic attraction that are fostered in neutral solutions.
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页数：12
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