STOICHIOMETRY OF HYDROXYAPATITE - INFLUENCE ON THE FLEXURAL STRENGTH

被引：125

作者：

ROYER, A ^{[1
]}

VIGUIE, JC ^{[1
]}

HEUGHEBAERT, M ^{[1
]}

HEUGHEBAERT, JC ^{[1
]}

机构：

[1] LAB PHYSICOCHIM SOLIDES,F-31400 TOULOUSE,FRANCE

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE | 1993年 / 4卷 / 01期

关键词：

D O I：

10.1007/BF00122982

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

This paper reports results on the sintering behaviour of hydroxyapatite (HAP) for various compositions and its resultant flexural strength. The HAP decomposition occurs at higher temperatures for sintered compacts than for powder and their OH stoichiometry depends on the porosity-closing temperature. The mechanical behaviour of HAP depends on its composition: the best results are obtained for HAP containing tricalcium phosphate (TCP), whereas for nearly pure HAP the flexural strength decreases to the lowest results corresponding to HAP containing CaO. It is suggested that the strengthening of HAP by TCP involves surface compression due to the beta --> alpha TCP transformation.

引用

页码：76 / 82

页数：7

共 24 条

[1] MECHANICAL-PROPERTIES OF SINTERED HYDROXYAPATITE FOR PROSTHETIC APPLICATIONS [J].