学术探索
学术期刊
新闻热点
数据分析
智能评审

Improvement of surface porosity and properties of alumina films by incorporation of Fe micrograins in micro-arc oxidation

被引：74
作者：
Jin, Fanya
Chu, Paul K.
Tong, Honghui
Zhao, Jun
机构：
[1] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
[2] SW Inst Phys, Chengdu 610041, Sichuan, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2006年 / 253卷 / 02期
关键词：
micro-arc oxidation; Al2O3; coatings; Fe micrograins; surface properties;
D O I：
10.1016/j.apsusc.2006.01.024
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Micro-arc oxidation (MAO) is an effective approach to improve the properties of aluminum and its alloy by forming ceramic films on the surface. However. the oxide layers often have a porous surface structure, which exhibits relatively high friction coefficients. In this work, in order to enhance the surface and mechanical properties of the films produced by micro-arc oxidation, Al2O3 coatings embedded with Fe micrograms of different thicknesses were produced on aluminum alloys by adding Fe micrograms into the electrolyte during MAO. Compared to the Al2O3 coatings without Fe micrograins, the MAO Al2O3 coatings with Fe micrograms are much denser and harder, and the wear resistance is also improved significantly. The enhancement can be attributed to the enhancement of the surface structure and morphology of the MAO Al2O3 coatings with embedded Fe micrograins. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：863 / 868
页数：6
相关论文
共 10 条
[1]   Microplasma systems for creating coatings on aluminium alloys [J].
Butyagin, PI ;
Khokhryakov, YV ;
Mamaev, AI .
MATERIALS LETTERS, 2003, 57 (11) :1748-1751
[2]   Formation of oxygen bubbles and its influence on current efficiency in micro-arc oxidation process of AZ91D magnesium alloy [J].
Guo, HF ;
An, MZ ;
Xu, S ;
Huo, HB .
THIN SOLID FILMS, 2005, 485 (1-2) :53-58
[3]   Thickness effects on the mechanical properties of micro-arc discharge oxide coatings on aluminium alloys [J].
Nie, X ;
Leyland, A ;
Song, HW ;
Yerokhin, AL ;
Dowey, SJ ;
Matthews, A .
SURFACE & COATINGS TECHNOLOGY, 1999, 116 :1055-1060
[4]   Deposition of duplex Al2O3/DLC coatings on Al alloys for tribological applications using a combined micro-arc oxidation and plasma-immersion ion implantation technique [J].
Nie, X ;
Wilson, A ;
Leyland, A ;
Matthews, A .
SURFACE & COATINGS TECHNOLOGY, 2000, 131 (1-3) :506-513
[5]   Effect of pulse duty cycle on micro-plasma oxidation of aluminum alloy [J].
Shi, YL ;
Yan, FY ;
Xie, GW .
MATERIALS LETTERS, 2005, 59 (22) :2725-2728
[6]  
Tong H, 2005, J KOREAN PHYS SOC, V46, pS134
[7]  
TONG HH, 2003, J KOR VAC SOC, V12, P21
[8]   Growth regularity of ceramic coatings formed by microarc oxidation on Al-Cu-Mg alloy [J].
Xue, WB ;
Deng, ZW ;
Chen, RY ;
Zhang, TH .
THIN SOLID FILMS, 2000, 372 (1-2) :114-117
[9]   The effects of current density on the phase composition and microstructure properties of micro-arc oxidation coating [J].
Yang, GL ;
Lü, XY ;
Bai, YZ ;
Cui, HF ;
Jin, ZS .
JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 345 (1-2) :196-200
[10]   Characterisation of oxide films produced by plasma electrolytic oxidation of a Ti-6Al-4V alloy [J].
Yerokhin, AL ;
Nie, X ;
Leyland, A ;
Matthews, A .
SURFACE & COATINGS TECHNOLOGY, 2000, 130 (2-3) :195-206
1