[R2O-Al2O3-B2O3-SiO2系玻璃及超细α-Al2O3对羟基磷灰石陶瓷烧结及相变的影响]

[Influences of R2O-Al2O3-B2O3-SiO2 system glass and superfine alpha-Al2O3 on the sintering and phase transition of hydroxyapatite ceramics].

作者信息

Wang Zhiqiang, Chen Xiaoxu, Cai Yingji, Lü Bingling

机构信息

School of Chemical Engineering, Dalian University of Technology, Dalian 116012.

出版信息

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2003 Jun;20(2):205-8.

PMID:12856580

Abstract

The effects of R2O-Al2O3-B2O3-SiO2 system glass and superfine alpha-Al2O3 on the sintering and phase transition of hydroxyapatite (HAP) ceramics were assessed. The results showed that alpha-Al2O3 impeded the sintering of HAP and raised the sintering temperature. When glass and alpha-Al2O3 were used together to reinforce HAP ceramics, better results could be obtained; the bending strength of multiphase HAP ceramics approached 106 MPa when 10% (wt) alpha-Al2O3 and 20%(wt) glass were used and sintered at 1200 for 1 h.

摘要

评估了R2O-Al2O3-B2O3-SiO2系统玻璃和超细α-Al2O3对羟基磷灰石（HAP）陶瓷烧结和相变的影响。结果表明，α-Al2O3阻碍了HAP的烧结并提高了烧结温度。当玻璃和α-Al2O3一起用于增强HAP陶瓷时，可以获得更好的效果；当使用10%（重量）的α-Al2O3和20%（重量）的玻璃，并在1200℃烧结1小时时，多相HAP陶瓷的抗弯强度接近106MPa。