Influence of Alumina Addition on the Optical Property of Zirconia/Alumina Composite Dental Ceramics  

作　　者：蒋丽 李伟 

机构地区：[1]State Key Laboratory of Oral Diseases, Sichuan University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2011年第4期690-695,共6页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National High-Tech Research and Development Program of China (863 Program) (No. 2006AA03Z440)

摘　　要：The influence of various alumina additions on the optical property of zirconia/alumina composite ceramics was investigated. The relative sintered densities, transmittances, color and the microstructure of the composite ceramics were studied. The experimental results showed that the relative sintered densities and transmittances decreased with alumina addition. The lightness increased obviously but the chroma change was small. Pure zirconia nanopowders sintered densely could obtain the relatively high transmittance, while the transmittance and the lightness of slight addition changed significantly. The zirconia/alumina composite ceramics with alumina addition less than 7.5wt% could achieve the relatively stable and reliable optical properties.The influence of various alumina additions on the optical property of zirconia/alumina composite ceramics was investigated. The relative sintered densities, transmittances, color and the microstructure of the composite ceramics were studied. The experimental results showed that the relative sintered densities and transmittances decreased with alumina addition. The lightness increased obviously but the chroma change was small. Pure zirconia nanopowders sintered densely could obtain the relatively high transmittance, while the transmittance and the lightness of slight addition changed significantly. The zirconia/alumina composite ceramics with alumina addition less than 7.5wt% could achieve the relatively stable and reliable optical properties.

关 键 词：alumina addition zirconia/alumina ceramics TRANSMITTANCE color optical properties 

分 类 号：TQ174.1[化学工程—陶瓷工业]