Amorphous coatings deposited on aluminum alloy by plasma electrolytic oxidation

被引：0

作者：

Guan, YJ ^{[1
]}

Xia, Y ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2005年 / 15卷 / 03期

关键词：

plasma electrolytic oxidation; amorphous coatings; aluminum alloy;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Amorphous [Al-Si-O] coatings were deposited on aluminum alloy by plasma electrolytic oxidation (PEO). The process parameters, composition, micrograph, and mechanical property of PEO amorphous coatings were investigated. It is found that the growth rate of PEO coatings reaches 4.44 mu m/min if the current density is 0.9 mA/mm(2). XRD results show that the PEO coatings are amorphous in the current density range of 0.3-0.9 mA/mm(2). EDS results show that the coatings are composed of O, Si and At elements. SEM results show that the coatings are porous. Nano indentation results show that the hardness of the coatings is about 3 - 4 times of that of the substrate, while the elastic modulus is about the same with the substrate. Furthermore, a formation mechanism of amorphous PEO coatings was proposed.

引用

页码：565 / 570

页数：6

共 15 条

[1] Application of the particle backscattering methods for the study of new oxide protective coatings at the surface of Al and Mg alloys [J].

Apelfeld, AV ;

Bespalova, OV ;

Borisov, AM ;

Dunkin, ON ;

Goryaga, NG ;

Kulikauskas, VS ;

Romanovsky, EA ;

Semenov, SV ;

Souminov, IV .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2000, 161 :553-557

[2] Microplasma systems for creating coatings on aluminium alloys [J].

Butyagin, PI ;

Khokhryakov, YV ;

Mamaev, AI .

MATERIALS LETTERS, 2003, 57 (11) :1748-1751

[3] Composition and adhesion of protective coatings on aluminum [J].

Gnedenkov, SV ;

Khrisanfova, OA ;

Zavidnaya, AG ;

Sinebrukhov, SL ;

Gordienko, PS ;

Iwatsubo, S ;

Matsui, A .

SURFACE & COATINGS TECHNOLOGY, 2001, 145 (1-3) :146-151

[4] Production of hard and heat-resistant coatings on aluminium using a plasma micro-discharge [J].

Gnedenkov, SV ;

Khrisanfova, OA ;

Zavidnaya, AG ;

Sinebrukhov, SL ;

Kovryanov, AN ;

Scorobogatova, TM ;

Gordienko, PS .

SURFACE & COATINGS TECHNOLOGY, 2000, 123 (01) :24-28

[5]

GUAN YJ, 2004, ADV MECH, V35, P237

[6] The tribological performance of ultra-hard ceramic composite coatings obtained through microarc oxidation [J].

Krishna, LR ;

Somaraju, KRC ;

Sundararajan, G .

SURFACE & COATINGS TECHNOLOGY, 2003, 163 :484-490

[7] Abrasive wear/corrosion properties and TEM analysis of Al2O3 coatings fabricated using plasma electrolysis [J].

Nie, X ;

Meletis, EI ;

Jiang, JC ;

Leyland, A ;

Yerokhin, AL ;

Matthews, A .

SURFACE & COATINGS TECHNOLOGY, 2002, 149 (2-3) :245-251

[8] Structure and antiwear behavior of micro-arc oxidized coatings on aluminum alloy [J].

Tian, J ;

Luo, ZZ ;

Qi, SK ;

Sun, XJ .

SURFACE & COATINGS TECHNOLOGY, 2002, 154 (01) :1-7

[9]

VAN TB, 1997, CERAMIC B, V56, P563

[10] Characterization of wear protective Al-Si-O coatings formed on Al-based alloys by micro-arc discharge treatment [J].

Voevodin, AA ;

Yerokhin, AL ;

Lyubimov, VV ;

Donley, MS ;

Zabinski, JS .

SURFACE & COATINGS TECHNOLOGY, 1996, 86-7 (1-3) :516-521

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