High-fracture toughness and aging-resistance of 3Y-TZP ceramics with a low Al2O3 content for dental applications

被引：23

作者：

Jing, Qiang ^{[1
]}

Bao, Jinxiao ^{[1
]}

Ruan, Fei ^{[1
]}

Song, Xiwen ^{[1
]}

An, Shengli ^{[1
]}

Zhang, Yonghe ^{[1
]}

Tian, Zhen ^{[1
]}

Lv, Haodong ^{[1
]}

Gao, Jianquan ^{[1
]}

Xie, Min ^{[1
]}

机构：

[1] Inner Mongolia Univ Sci & Technol, Sch Mat & Met, Baotou 014010, Inner Mongolia, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2019年 / 45卷 / 05期

关键词：

HP + x wt% (Al2O3) ceramics; High-fracture toughness; Low-temperature degradation; Phase composition; TETRAGONAL ZIRCONIA POLYCRYSTALS; MONOCLINIC PHASE-TRANSFORMATION; LOW-TEMPERATURE DEGRADATION; MECHANICAL-PROPERTIES; ALUMINA; TZP; ADDITIONS; STRESSES; SYSTEM; CRACK;

D O I：

10.1016/j.ceramint.2018.12.078

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：

The aim of this investigation was to discuss the mechanical properties and aging-resistance of 3Y-TZP (3 mol% yttria-tetragonal zirconia with 0-0.25 wt% alumina added 3Y-TZP) by comparing the effect of high-energy ball milling zirconia powders (HP) and commercially available zirconia powders (CP). The results showed that a hardness of 12.93 GPa, combined with an excellent high-fracture toughness of 9.17 MPa m(1/2) could be attained for HP-doped (0-0.25 wt% (Al2O3)) ceramics, as well as an increase in hydrothermal stability with the increase in Al2O3 content. The HP + 0.15 wt% (Al2O3) ceramics exhibited better antiaging performance and mechanical properties. These 3Y-TZP ceramics, with high-fracture toughness and better aging-resistance, which were prepared by a high-energy ball milling method, could meet the different demands of practical dental ceramics.

引用

页码：6066 / 6073

页数：8

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