Nanostructure processing of hydroxyapatite-based bioceramics

被引：215

作者：

Ahn, ES ^{[1
]}

Gleason, NJ ^{[1
]}

Nakahira, A ^{[1
]}

Ying, JY ^{[1
]}

机构：

[1] MIT, Dept Chem Engn, Cambridge, MA 02139 USA

来源：

NANO LETTERS | 2001年 / 1卷 / 03期

关键词：

D O I：

10.1021/nl0055299

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanostructure processing was applied to derive hydroxyapatite and hydroxyapatite-zirconia bioceramics with ultrafine microstructures and significantly improved mechanical properties for orthopedic and dental implant applications. Despite its attractive bioactivity, hydroxyapatite (HAP) has been limited in applications due to the poor processability and mechanical strength of the conventional material. Through nanostructure processing, high-strength HAP has been obtained by pressure-assisted sintering. To further toughen the HAP matrix, nanocrystalline yttria-stabilized zirconia (YSZ) dispersoids have been introduced during HAP precipitation. The nanostructured HAP and HAP-YSZ composites demonstrated excellent chemical and microstructural uniformity and mechanical properties, compared to conventional coarse-grained systems.

引用

页码：149 / 153

页数：5

共 31 条

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