电流密度对镁合金微弧氧化膜结构和性能的影响
Effect of Electric Current Density on Structure and Properties of Microarc Oxidation Catings on Magnesium Aloy
查看参考文献15篇
|
文摘
|
电流密度是影响微弧氧化膜层结构和性能的主要因素之一.采用测厚仪、扫描电镜(SEM)、电化学测试等手段研究了AM60B镁合金在不同电流密度下硅酸盐溶液中微弧氧化膜层的结构和耐蚀性能.结果表明,随电流密度的增大,氧化膜厚度呈线性增加;氧化膜的表面微孔数目减少,微裂纹扩展程度增大.电化学腐蚀测试结果显示,电流密度9.0 A/dm~2下生成的氧化膜耐蚀性最好,主要与膜层较致密的微观结构有关. |
|
其他语种文摘
|
Current density is one of the key factors influencing the structure and properties of microarc oxidation coatings. Thus microarc oxidation coatings were prepared on AM60B magnesium alloy from a silicate electrolyte at different current density. The effects of the current density on the structure and corrosion resistance of the microarc oxidation coatings were investigated using a thickness meter, scanning electron microscope, and electrochemical device. The results showed that the coating thickness increased linearly with the increasing current density. The micro-structure of the coatings was highly dependent on the current density. The number of the micropores on the coating surface decreased and the micro-cracks were enlarged with increasing current density. Moreover, the coating formed at a current density of 9.0 A/dm~2 had the best corrosion resistance, which was attributed to its compact microstructure. |
|
来源
|
材料保护
,2007,40(8):24-26,29 【核心库】
|
|
关键词
|
镁合金
;
微弧氧化
;
电流密度
;
微观结构
;
耐蚀性
|
|
地址
|
中国科学院兰州化学物理研究所, 固体润滑国家重点实验室, 甘肃, 兰州, 730000
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1001-1560 |
|
学科
|
金属学与金属工艺 |
|
基金
|
国家自然科学基金创新研究群体项目
|
|
文献收藏号
|
CSCD:2854684
|
参考文献 共
15
共1页
|
|
1.
Gray J E. Protective coatings on magnesium and its alloys-a critical review.
Journal of Alloys and Compounds,2002,336:88-113
|
被引
447
次
|
|
|
|
|
2.
刘建平. 微弧氧化技术及其发展.
材料导报,1998,12(5):27-29
|
被引
20
次
|
|
|
|
|
3.
Kuhn A. Plasma anodizing of magnesium alloys.
Metal Finishing,2003,101(9):44-50
|
被引
9
次
|
|
|
|
|
4.
蒋百灵. 镁合金微弧氧化陶瓷层显微缺陷与相组成及其耐蚀性.
中国有色金属学报,2002,12(3):454-457
|
被引
80
次
|
|
|
|
|
5.
李建中. 微弧氧化技术在Al、Mg、Ti及其合金中的应用.
腐蚀科学与防护技术,2004,16(4):218-221
|
被引
17
次
|
|
|
|
|
6.
魏同波. 电流密度对铝合金微弧氧化膜的生长及结合力的影响.
材料保护,2004,37(4):4-6
|
被引
17
次
|
|
|
|
|
7.
唐光昕. 电流密度对复合氧化法制备涂层结构的影响.
材料研究学报,2004,18(4):435-442
|
被引
1
次
|
|
|
|
|
8.
张新平. 微弧氧化工艺参数对覆盖层厚度的影响规律模型.
材料保护,2004,37(8):19-20
|
被引
11
次
|
|
|
|
|
9.
魏同波. 铝合金微弧氧化陶瓷膜的性能研究.
材料科学与工程学报,2004,22(4):564-567
|
被引
8
次
|
|
|
|
|
10.
Yerokhin A L. Plasma electrolysis for surface engineering.
Surface and Coatings Technology,1999,122:73-93
|
被引
399
次
|
|
|
|
|
11.
李宝东. 镁合金铸件表面处理技术现状.
材料保护,2002,35(4):1-3
|
被引
13
次
|
|
|
|
|
12.
Yang G l. The effects of current density on the phase composition and microstructure properties of microarc oxidation coating.
Journal of Alloys and Compounds,2002,345:196-200
|
被引
38
次
|
|
|
|
|
13.
Guo H F. Growth of ceramic coatings on AZ91D magnesium alloys by micro-arc oxidation in aluminate-fluoride solutions and evaluation of corrosion resistance.
Applied Surface Science,2005(246):229-238
|
被引
1
次
|
|
|
|
|
14.
Yao Z P. Electrochemical impedance spectroscopy of ceramic coatings on Ti-6Al-4V by micro-plasma oxidation.
Electrochimica Acta,2005,50:3273-3279
|
被引
4
次
|
|
|
|
|
15.
Bai A. The corrosion behavior of Ni-P deposits with high phosphorous contents in brine media.
Materials Chemistry and Physics,2003,82:93-100
|
被引
14
次
|
|
|
|
|
了解气象卫星更多信息，请访问