PREPARATION OF ZIRCONIA-TOUGHENED BIOACTIVE GLASS-CERAMIC COMPOSITE BY SINTER HOT ISOSTATIC PRESSING

被引：28

作者：

KASUGA, T ^{[1
]}

NAKAJIMA, K ^{[1
]}

UNO, T ^{[1
]}

YOSHIDA, M ^{[1
]}

机构：

[1] HOYA CORP,MAT RES LAB,AKISHIMA,TOKYO 196,JAPAN

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1992年 / 75卷 / 05期

关键词：

BIOCERAMICS; GLASS-CERAMICS; ZIRCONIA; TOUGHENING; SINTERING;

D O I：

10.1111/j.1151-2916.1992.tb05545.x

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：

High-strength bioactive ceramics, MgO-CaO-SiO2-P2O5 glass-ceramic composites toughened by zirconia, were prepared by sinter-hot isostatic pressing (sinter-HIPing) to achieve easier mass production and higher reliability. Raw materials for preparing a dense presintered body were investigated to obtain almost complete densification by sinter-HIPing. It was found that the densification of a presintered body was influenced by residual glassy phases in the crystallized glass particles. By using a controlled crystallized glass powder and a zirconia powder as raw materials, a presintered body with a relative density higher than 94% was prepared, and then it was densified to near its theoretical density by sinter-HIPing. This bioceramic exhibited an extremely high bending strength of 400 to 1000 MPa and fracture toughness of 3 to 5 MPa . m1/2 for 30 to 80 vol% of zirconia.

引用

页码：1103 / 1107

页数：5

共 14 条

[1] HYDROXYLAPATITE SYNTHESIS AND CHARACTERIZATION IN DENSE POLYCRYSTALLINE FORM [J].