Preparation of MgO coatings on magnesium alloys for corrosion protection

被引：67

作者：

Lei, Ting ^{[1
]}

Ouyang, Chun ^{[1
]}

Tang, Wei ^{[1
]}

Li, Lian-Feng ^{[1
,2
]}

Zhou, Le-Shan ^{[3
]}

机构：

[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

[2] Cent South Univ, Xiangya Hosp, Changsha 410008, Hunan, Peoples R China

[3] Cent South Univ, Xiangya Sch Med, Changsha 410013, Hunan, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2010年 / 204卷 / 23期

基金：

中国国家自然科学基金;

关键词：

Magnesium alloy; Anodization; Alkaline solution; Corrosion resistance; Oxide coatings; MICROARC OXIDATION; BEHAVIOR; PERFORMANCE; RESISTANCE;

D O I：

10.1016/j.surfcoat.2010.04.060

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

MgO coating is formed on magnesium alloy by anodic electrodeposition in 6 M KOH solution, whereas Mg (OH)(2) coating is produced by anodization in 10 M KOH solution, which could be successively converted to MgO by calcination in air at 450 degrees C. The evolution of morphology, structure and composition of anodic film obtained on Mg alloy is investigated using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDX) and X-ray diffraction (XRD). Potentiodynamic polarization measurements show that the as-grown MgO protective coatings are very effective in improving the corrosion resistance of magnesium alloy compared to bare metallic magnesium. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3798 / 3803

页数：6

共 25 条

[1] Studies on the influence of chloride ion concentration and pH on the corrosion and electrochemical behaviour of AZ63 magnesium alloy [J].

Altun, H ;

Sen, S .

MATERIALS & DESIGN, 2004, 25 (07) :637-643

[2] Transport of species during plasma electrolytic oxidation of WE43-T6 magnesium alloy [J].

Arrabal, R. ;

Matykina, E. ;

Skeldon, P. ;

Thompson, G. E. ;

Pardo, A. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2008, 155 (03) :C101-C111

[3] Corrosion resistance of plasma-anodized AZ91D magnesium alloy by electrochemical methods [J].

Barchiche, C. -E. ;

Rocca, E. ;

Juers, C. ;

Hazan, J. ;

Steinmetz, J. .

ELECTROCHIMICA ACTA, 2007, 53 (02) :417-425

[4] Anodizing treatments for magnesium alloys and their effecton corrosion resistance in various environments [J].

Blawert, Carsten ;

Dietzel, Wolfgang ;

Ghali, Edward ;

Song, Guangling .

ADVANCED ENGINEERING MATERIALS, 2006, 8 (06) :511-533

[5] Electrochemical performance of microarc oxidation films formed on AZ91D magnesium alloy in silicate and phosphate electrolytes [J].

Cai, QZ ;

Wang, LS ;

Wei, BK ;

Liu, QX .

SURFACE & COATINGS TECHNOLOGY, 2006, 200 (12-13) :3727-3733

[6] Study on anodic oxidation of magnesium in 6 M KOH solution by alternative current impedance [J].

Cai, Zongping ;

Lu, Dongsheng ;

Li, Weishan ;

Liang, Ying ;

Zhou, Hebing .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (01) :467-472

[7]

Emley E.F., 1966, PRINCIPLES MAGNESIUM

[8] Protective coatings on magnesium and its alloys - a critical review [J].

Gray, JE ;

Luan, B .

JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 336 (1-2) :88-113

[9] Electrolytic plasma technology: Science and engineering - An overview [J].

Gupta, P. ;

Tenhundfeld, G. ;

Daigle, E. O. ;

Ryabkov, D. .

SURFACE & COATINGS TECHNOLOGY, 2007, 201 (21) :8746-8760

[10] A novel approach for the formation of Mg(OH)2/MgO nanowhiskers on magnesium:: Rapid anodization in chloride containing solutions [J].

Hahn, R. ;

Brunner, J. G. ;

Kunze, J. ;

Schmuki, P. ;

Virtanen, S. .

ELECTROCHEMISTRY COMMUNICATIONS, 2008, 10 (02) :288-292

← 1 2 3 →