Transparent single crystalline ZrO2-SiO2 glass nanoceramic sintered by SPS

被引：60

作者：

Fu, Le ^{[1
]}

Wu, Chengtie ^{[2
]}

Grandfield, Kathryn ^{[3
,4
]}

Unosson, Erik ^{[1
]}

Chang, Jiang ^{[2
]}

Engqyist, Hakan ^{[1
]}

Xia, Wei ^{[1
]}

机构：

[1] Uppsala Univ, Dept Engn Sci, Appl Mat Sci, Uppsala, Sweden

[2] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, Peoples R China

[3] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON, Canada

[4] McMaster Univ, Sch Biomed Engn, Hamilton, ON, Canada

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2016年 / 36卷 / 14期

关键词：

ZrO2-SiO2; Single crystalline spheres; Transparent glass ceramic; SPS; Sol-gel; DENTAL APPLICATIONS; FRACTURE-TOUGHNESS; INDENTATION METHOD; LIGHT-SCATTERING; CERAMICS; ZIRCONIA; ALUMINA; SYSTEM;

D O I：

10.1016/j.jeurceramsoc.2016.05.016

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：

Transparent ZrO2-SiO2 glass ceramics show potential for application in the dental industry. The application of this material prepared by a sol-gel method was hindered by the difficulties in obtaining large dimension samples. Spark plasma sintering (SPS) offers the possibility of achieving transparent ZrO2-SiO2 glass ceramics. In this study, a ZrO2-SiO2 powder was prepared by the sol-gel method and subsequently sintered by SPS. Varied sintering temperatures and pressures were explored to achieve better mechanical strength and transparency. TEM results showed single crystalline ZrO2 spherical nanocrystals (approximately 20 nm) homogenously embedded in the SiO2 matrix. Tetragonal ZrO2 was the only crystalline phase in all specimens. With sintering conditions of 1200 degrees C and 30 MPa, a glass ceramic with fracture toughness of 4.13 MPa was obtained. This value is similar to the commercial dental glass ceramic of IPS e.max (R) Press. The studied transparent glass ceramic with high transparency and moderate mechanical strength shows promise for dental application. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：3487 / 3494

页数：8

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