Characterization of Al2O3 ceramic coatings on 6063 aluminum alloy prepared in borate electrolytes by micro-arc oxidation

被引：89
作者：
Li, H. X. [1 ]
Rudnev, V. S. [2 ]
Zheng, X. H. [1 ]
Yarovaya, T. P. [2 ]
Song, R. G. [1 ]
机构：
[1] Zhejiang Univ Technol, MOE Key Lab Mech Mfg & Automat, Hangzhou 310014, Zhejiang, Peoples R China
[2] Russian Acad Sci, Inst Chem, FEB, Vladivostok 690022, Russia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 462卷 / 1-2期
关键词：
Al2O3 ceramic coatings; micro-arc oxidation; borate electrolyte; micro-hardness;
D O I：
10.1016/j.jallcom.2007.08.046
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：
Al2O3 ceramic coatings were directly prepared on 6063 aluminum alloy in borate electrolytes by micro-arc oxidation technique. The microstructure, phase composition, elemental distribution, and micro-hardness of Al2O3 ceramic coatings were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and micro-hardness test. The fabricated samples were almost composed of alpha-Al2O3 and gamma-Al2O3, also there existed pores and cracks on the surface of the coatings. Micro-hardness test shows that the prepared coatings are of high hardness, which can satisfy the requirements for the mechanical application. (C) 2007 Elsevier B.V. All rights reserved.
引用
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页码：99 / 102
页数：4
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