Corrosion mechanism of PEO films on AZ31 magnesium alloys

被引：0
作者：
Wang, Li [1 ]
Fu, Wen [1 ,2 ]
Chen, Li [2 ]
机构：
[1] Guangdong Univ Petrochem Technol, Coll Chem & Environm Engn, Maoming 525000, Guangdong, Peoples R China
[2] South China Univ Technol, Coll Chem & Chem Engn, Guangzhou 510640, Peoples R China
来源：
ADVANCED BUILDING MATERIALS AND STRUCTURAL ENGINEERING | 2012年 / 461卷
关键词：
Plasma electrolytic oxidation; films; corrosion mechanism; PLASMA ELECTROLYTIC OXIDATION; RESISTANCE; COATINGS;
D O I：
10.4028/www.scientific.net/AMR.461.220
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The corrosion mechanisms of plasma electrolytic oxidation (PEO) films formed on AZ31 magnesium alloys were discussed in alkaline silicate solution. The structure and element contents of the films after immersed in 3.5 wt.% NaCl solution were investigated by SEM and EDS. The results indicated that the corrosion occurred on AZ31 magnesium alloy and the treated PEO samples during five days immersion. The corrosion procedure of the samples was depicted.
引用
收藏
页码：220 / +
页数：2
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共 11 条
[1]   Environmental friendly plasma electrolytic oxidation of AM60 magnesium alloy and its corrosion resistance [J].
Cao Fa-he ;
Lin Long-yong ;
Zhang Zhao ;
Zhang Jian-qing ;
Cao Chu-nan .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2008, 18 (02) :240-247
[2]   Growth mechanism of black ceramic layers formed by microarc oxidation [J].
Li, Junming ;
Cai, Hui ;
Jiang, Bailing .
SURFACE & COATINGS TECHNOLOGY, 2007, 201 (21) :8702-8708
[3]   Preparation and characterization of oxide films containing crystalline TiO2 on magnesium alloy by plasma electrolytic oxidation [J].
Liang, Jun ;
Hu, Litian ;
Hao, Jingcheng .
ELECTROCHIMICA ACTA, 2007, 52 (14) :4836-4840
[4]   Destruction of coating material during spark anodizing of titanium [J].
Matykina, E. ;
Doucet, G. ;
Monfort, E. ;
Berkani, A. ;
Skeldon, P. ;
Thompson, G. E. .
ELECTROCHIMICA ACTA, 2006, 51 (22) :4709-4715
[5]   Excessive oxygen evolution during plasma electrolytic oxidation of aluminium [J].
Snizhko, L. O. ;
Yerokhin, A. L. ;
Gurevina, N. L. ;
Patalakha, V. A. ;
Matthews, A. .
THIN SOLID FILMS, 2007, 516 (2-4) :460-464
[6]   Evolution of active species and discharge sparks in Na2SiO3 electrolyte during PEO process [J].
Wang, Li ;
Fu, Wen ;
Chen, Li .
JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (28) :7652-7656
[7]   Effect of potassium fluoride on structure and corrosion resistance of plasma electrolytic oxidation films formed on AZ31 magnesium alloy [J].
Wang, Li ;
Chen, Li ;
Yan, Zongcheng ;
Wang, Honglin ;
Peng, Jiazhi .
JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 480 (02) :469-474
[8]   Characteristics of anodic coatings oxidized to different voltage on AZ91D Mg alloy by micro-arc oxidization technique [J].
Wang, Y ;
Wang, J ;
Zhang, J ;
Zhang, Z .
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2005, 56 (02) :88-92
[9]   Growth characteristics of plasma electrolytic oxidation ceramic coatings on Ti-6Al-4V alloy [J].
Yao, Zhongping ;
Jiang, Yanli ;
Jia, Fangzhou ;
Jiang, Zhaohua ;
Wang, Fuping .
APPLIED SURFACE SCIENCE, 2008, 254 (13) :4084-4091
[10]   Plasma electrolysis for surface engineering [J].
Yerokhin, AL ;
Nie, X ;
Leyland, A ;
Matthews, A ;
Dowey, SJ .
SURFACE & COATINGS TECHNOLOGY, 1999, 122 (2-3) :73-93
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