Effect of silicon and heat-treatment temperature on the morphology and mechanical properties of silicon - substituted hydroxyapatite

被引：53

作者：

Bang, L. T. ^{[1
]}

Ishikawa, K. ^{[2
]}

Othman, R. ^{[1
]}

机构：

[1] Univ Sains Malaysia, Sch Mat & Mineral Resources Engn, Nibong Tebal 14300, Penang, Malaysia

[2] Kyushu Univ, Fac Dent Sci, Dept Biomat, Fukuoka 812, Japan

来源：

CERAMICS INTERNATIONAL | 2011年 / 37卷 / 08期

关键词：

Mechanical properties; Silicon-substituted hydroxyapatite; Biomaterials; Morphology; IN-VITRO;

D O I：

10.1016/j.ceramint.2011.06.023

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：

The precipitation method was used to synthesize silicon-substituted hydroxyapatite with different Si contents of 0.4, 0.8 and 1.6 wt.% (0.4, 0.8 and 1.6Si-HA) using silicon acetate [Si(OCOCH3)(4)] as a Si source. As-synthesized hydroxyapatite (HA) and Si-HA powders/bulks were heat-treated at different temperatures of 1150, 1200 and 1250 degrees C for 1 h. Pure 0.4Si-HA and 1.6Si-HA were obtained after heat-treatment at all temperatures, whilst alpha-TCP phase was formed in the 0.8Si-HA sample after heat-treatment at 1250 degrees C. SEM observation clearly showed that the substitution of Si in HA inhibited the grain growth of Si-HA even at high heat-treatment temperatures (1200 or 1250 degrees C). The highest diametral tensile strength (DTS) of 15.93 MPa was obtained in the 1.6Si-HA sample after heat-treatment at 1250 degrees C. (C) 2011 Elsevier Ltd and Techna Group Sri. All rights reserved.

引用

页码：3637 / 3642

页数：6

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