Preparation and Mechanical Properties of Zirconia Ceramics Doped with Different Y2O3 Contents

被引：0

作者：

宋艳伟 ^{[1
]}

ZHAO Xiaoqing ^{[1
]}

WANG Aiyang ^{[1
]}

XIONG Yan ^{[2
]}

董艳玲 ^{[1
]}

王为民 ^{[1
]}

机构：

[1] State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology

[2] School of Materials and Chemical Engineering, Hubei University of Technology

来源：

Journal of Wuhan University of Technology(Materials Science) | 2023年 / 38卷 / 06期

基金：

中国国家自然科学基金;

关键词：

D O I：

暂无

中图分类号：

TQ174.1 [基础理论];

学科分类号：

摘要：

The sintering behavior and mechanical properties of zirconia doped with 2.0mol%-3.0mol%Y2O3were studied by pressure-less sintering. The experimental results show that the densification temperature of zirconia ceramics increases gradually with the decrease of Y2O3doping content by which decreases the sintering driving force due to the lower oxygen vacancy concentration of the systems. Furthermore, the bending strength and fracture toughness of the prepared zirconia ceramics increase with the decrease of Y2O3doping content. It can be attributed to the fact that the phase stability of tetragonal zirconia decreases with the decrease of Y2O3doping content, which is easier to induce "phase transformation toughening" and dissipate impact energy. The relative density, bending strength and fracture toughness of 2.0 mol% Y2O3doped zirconia ceramics(2.0Y-ZrO2)sintered at 1 525 ℃ are 99.00%, 1 256.65±20.82 MPa and 9.85±0.13 MPa·m1/2, respectively.

引用

页码：1287 / 1292

页数：6

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