Tribological characterization of microarc oxidized alumina coatings for biological applications

被引：24

作者：

Baxi, Juhi ^{[1
]}

Kar, Presenjit ^{[1
]}

Liang, Hong ^{[1
]}

Polat, Aytekin ^{[2
]}

Usta, Metin ^{[2
]}

Ucisik, Ahmet Hikmet ^{[3
]}

机构：

[1] Texas A&M Univ, College Stn, TX 77843 USA

[2] Gebze Inst Technol, TR-41400 Gebze, Kocaeli, Turkey

[3] Bogazici Univ, Istanbul, Turkey

来源：

VACUUM | 2008年 / 83卷 / 01期

基金：

美国国家科学基金会;

关键词：

Microarc oxidation (MAO); Alumina coatings; Artificial joints;

D O I：

10.1016/j.vacuum.2008.03.085

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Coatings with high wear and corrosion resistance are desirable in tribological and biological applications. In an attempt to develop such coatings, we used microarc oxidation (MAO) method to generate noble coatings of alumina on aluminum alloys. This paper reports our tribological investigations on these coatings with a pin-on-disk tribometer in synthetic biofluid. The frictional behavior and wear mechanisms were studied through surface characterization using a scanning electron microscope and a surface profilometer. It was found that the MAO coatings were highly wear resistant in the biofluid environment. The frictional behavior depends on the relative hardness of the ball-on-disk materials. The increased alpha-Al2O3 and gamma-Al2O3 phases with an increase in the current intensity were found to reduce the friction. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：217 / 222

页数：6

共 21 条

[1]

*CDC, 1994, MMWR-MORBID MORTAL W, V43, P737

[2]

Centers for Disease Control and Prevention (CDC), 1994, MMWR Morb Mortal Wkly Rep, V43, P730

[3]

CHARLES AH, 2001, HDB CERAMICS GLASSES

[4]

DANTONIO JA, 2005, BIOCERAMICS ALTERNAT