Hydroxyapatite formation on bioactive-glazed alumina

被引：23

作者：

Kim, CY ^{[1
]}

Jee, SS ^{[1
]}

机构：

[1] Inha Univ, Dept Ceram Engn, Nam Ku, Inchon 402751, South Korea

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2003年 / 23卷 / 11期

关键词：

Al2O3; bioactive glass; hydroxyapatite; wollastonite;

D O I：

10.1016/S0955-2219(02)00444-2

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：

Alumina was coated with bioactive glass which is known to show a bonding behavior to living tissue. Another glass also coated between alumina and bioactive glass to compensate their differences in thermal expansion. After coating the alumina with bioactive glass, it reacted in simulated body fluids to investigate the formation of hydroxyapatite. The bioactive-glazed layer crystallized into alpha-wollastonite and beta-wollastonite crystalline phases when the glaze was fired at 1200 degreesC and 1100 degreesC, respectively. When the samples reacted in SBF, alpha-wollastonite easily leached out of the surface and hydroxyapatite formed on the leached site. The leaching rate of alpha-wollastonite was faster than that of beta-wollastonite, and the hydroxyapatite-forming rate was also faster in the sample containing a-wollastonite than in the other sample. No silica-rich layer was found underneath the newly developed hydroxyapatite. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：1803 / 1811

页数：9

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