The effect of post-treatment on the mechanical behavior of plasma sprayed HA coating

被引：1

作者：

Cao, Y ^{[1
]}

Zhang, B ^{[1
]}

Wang, LP ^{[1
]}

Lin, Q ^{[1
]}

Li, XD ^{[1
]}

Bao, CY ^{[1
]}

Chen, JY ^{[1
]}

Yang, BC ^{[1
]}

Yang, L ^{[1
]}

Zhang, XD ^{[1
]}

机构：

[1] Sichuan Univ, Engn Res Ctr Biomat, Chengdu 610064, Peoples R China

来源：

BIOCERAMICS 17 | 2005年 / 284-286卷

关键词：

HA coating; mechanical behavior; plasma-sprayed; water vapor treatment;

D O I：

10.4028/www.scientific.net/KEM.284-286.337

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Plasma-sprayed hydroxyapatite coating on metal substrate has been prepared, two kinds of post-treatment methods have been used: (1) Heating in air at 650 degrees C for 30 min, (2) Heating in water vapor at 125 degrees C, 0.15Mpa for 6 hours. XRD showed that the nanocrystals of HA coating increased after water vapor treated. The interfacial tensiles strength between HA and the substrate were 45.0 +/- 1.82MPa, 39.1 +/- 1.27MPa and 30.3 +/- 1.61MPa for as-received coatings, water vapor treated coatings and heated in air coatings respectively. After 3 months implant in dogs limbs, the push-out strength between implants and bone were 11.27 +/- 2.71MPa, 11.63 +/- 3.11MPa, 23.92 +/- 2.01MPa and 18.8 +/- 1.82MPa for pure Ti implants, as-received coating implants, water vapor treated implants and heated in air implants respectively. The results showed that the water vapor post treated HA coating have better mechanical behavior in vitro and in vivo.

引用

页码：337 / 340

页数：4

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