Tribological behavior of plasma-sprayed carbon nanotube-reinforced hydroxyapatite coating in physiological solution

被引：176

作者：

Balani, Kantesh

Chen, Yao

Harlinkar, Sandip P.

Dahotre, Narendra B.

Agarwal, Arvind ^{[1
]}

机构：

[1] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

ACTA BIOMATERIALIA | 2007年 / 3卷 / 06期

关键词：

hydroxyapatite; carbon nanotubes; plasma spraying; wear; simulated body fluid;

D O I：

10.1016/j.actbio.2007.06.001

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Wear behavior of plasma-sprayed carbon nanotube (CNT)-reinforced hydroxyapatite (HA) coating is evaluated in the simulated body fluid environment. Apart from enhancing the fracture toughness and providing biocompatibility, CNT-reinforced HA coating demonstrated superior wear resistance compared with that of hydroxyapatite coating without CNT. Initiation and propagation of microcracks during abrasive wear of plasma-sprayed hydroxyapatite coatings was suppressed by CNT reinforcement. Surface characterization and wear studies have shown that in addition to acting as underprop lubricant, CNTs provide reinforcement via stretching and splat-bridging for enhanced abrasion resistance in vitro. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：944 / 951

页数：8

共 32 条

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