Near net-shape fabrication of hydroxyapatite glass composites

被引：0
|
作者：
Qingshan Zhu
Gijsbertus De With
Leonardus J. M. G. Dortmans
Frits Feenstra
机构：
[1] Chinese Academy of Sciences,Multiphase Reaction Lab, Institute of Process Engineering
[2] Eindhoven University of Technology,Lab of Solid State and Materials Chemistry
[3] TNO Institute of Applied Physics,undefined
[4] TNO Industrial Technology,undefined
来源：
Journal of Materials Science: Materials in Medicine | 2004年 / 15卷
关键词：
Polymer; Phosphate; SiO2; Shrinkage; Elevated Temperature;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Near net-shape fabrication of hydroxyapatite (HA) glass composites has been attempted by infiltrating a glass into porous HA performs. Main efforts were put to develop glasses that are chemically compatible with HA at elevated temperatures. After extensive investigations in the phosphate and borosilicate systems, glasses of (50-55)SiO2-(20-25)B2O3-(10-20)Li2O-(0-6)CaO (wt%) composition were successfully developed. The glass shows good chemical compatibility with HA at elevated temperatures. Dense HA/glass composites can be fabricated at 850–950 ∘C by the melt infiltration process. Investigations demonstrated a good near net-shape capability of the process, where the linear shrinkage induced by the infiltration process is less than 0.1%. Preliminary mechanical tests showed that the fracture strength and toughness of the infiltrated HA/glass composite are comparable with dense HA.
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页码：1187 / 1191
页数：4
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