Effects of combined organic and inorganic corrosion inhibitors on the nanostructure cerium based conversion coating performance on AZ31 magnesium alloy: Morphological and corrosion studies

被引：101
作者：
Saei, E. [1 ]
Ramezanzadeh, B. [2 ]
Amini, R. [2 ]
Kalajahi, M. Salami [1 ]
机构：
[1] Sahand Univ Technol, Dept Polymer Engn, Tabriz, Iran
[2] Inst Color Sci & Technol, Dept Surface Coating & Corros, 59 Vafamanesh St,Hosainabad Sq, Tehran, Iran
来源：
CORROSION SCIENCE | 2017年 / 127卷
关键词：
Magnesium; EIS; XPS; SEM; CHEMICAL CONVERSION; ADHESION PROPERTIES; DIFFERENT KINDS; HALIDE-IONS; MILD-STEEL; MG ALLOYS; RESISTANCE; ALUMINUM; AZ91D; MICROSTRUCTURE;
D O I：
10.1016/j.corsci.2017.08.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnesium (Mg) AZ31 samples were chemically treated by a series of room temperature nanostructure cerium based conversion coatings containing Mn(NO3)(2)center dot 4H(2)O, Co(NO3)(2)center dot 6H(2)O, and polyvinyl alcohol (PVA). The microstructure and corrosion protection properties of different samples were studied by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS) and polarization test in 3.5 wt.% NaCl solution. Results demonstrated that the AZ31 Mg alloy sample treated by Ce-Mn-PVA showed the highest corrosion resistance. A denser Ce film with lower crack was precipitated on the sample treated by Ce-Mn-PVA conversion coating.
引用
收藏
页码：186 / 200
页数：15
相关论文
共 84 条
[11]   Formation of a cerium-based conversion coating on AA2024: relationship with the microstructure [J].
Campestrini, P ;
Terryn, H ;
Hovestad, A ;
de Wit, JHW .
SURFACE & COATINGS TECHNOLOGY, 2004, 176 (03) :365-381
[12]   A Comparative Study on the Corrosion Resistance of Cerium-Based Conversion Coatings on AZ91D and AZ31B Magnesium Alloys [J].
Castano, C. E. ;
Maddela, S. ;
O'Keefe, M. J. ;
Wang, Y. M. .
COATINGS FOR CORROSION PROTECTION, 2012, 41 (15) :3-12
[13]   Photo-assisted reduction in nanostructured cerium-based coatings [J].
Castano, Carlos E. ;
O'Keefe, Matthew J. ;
Fahrenholtz, William G. .
SCRIPTA MATERIALIA, 2013, 69 (06) :489-492
[14]   Preparation of cerium oxide based environment-friendly chemical conversion coating on magnesium alloy with additives [J].
Chen Dong-chu ;
Wu Jian-feng ;
Liang Yi-qing ;
Ye Shu-lin ;
Li Wen-fang .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2011, 21 (08) :1905-1910
[15]   Review of Corrosion-Resistant Conversion Coatings for Magnesium and Its Alloys [J].
Chen, X. B. ;
Birbilis, N. ;
Abbott, T. B. .
CORROSION, 2011, 67 (03)
[16]   Microstructure and electrochemical characterization of trivalent chromium based conversion coating on zinc [J].
Cho, KeunWoo ;
Rao, V. Shankar ;
Kwon, HyukSang .
ELECTROCHIMICA ACTA, 2007, 52 (13) :4449-4456
[17]   Conversion-coating treatment for magnesium alloys by a permanganate-phosphate solution [J].
Chong, KZ ;
Shih, TS .
MATERIALS CHEMISTRY AND PHYSICS, 2003, 80 (01) :191-200
[18]   Corrosion resistance of a self-healing micro-arc oxidation/polymethyltrimethoxysilane composite coating on magnesium alloy AZ31 [J].
Cui, Lan-Yue ;
Gao, Shang-Dong ;
Li, Ping-Ping ;
Zeng, Rong-Chang ;
Zhang, Fen ;
Li, Shuo-Qi ;
Han, En-Hou .
CORROSION SCIENCE, 2017, 118 :84-95
[19]   Corrosion behaviors in physiological solution of cerium conversion coatings on AZ31 magnesium alloy [J].
Cui, Xiufang ;
Yang, Yuyun ;
Liu, Erbao ;
Jin, Guo ;
Zhong, Jinggao ;
Li, Qingfen .
APPLIED SURFACE SCIENCE, 2011, 257 (23) :9703-9709
[20]   Microstructure and corrosion resistance of phytic acid conversion coatings for magnesium alloy [J].
Cui, Xiufang ;
Li, Qingfen ;
Li, Ying ;
Wang, Fuhui ;
Jin, Guo ;
Ding, Minghui .
APPLIED SURFACE SCIENCE, 2008, 255 (05) :2098-2103
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