The effects of the addition of tetragonal-ZrO2 on the mechanical properties of MgAl2O4 - ZrO2 composites

被引：9
|
作者：
Marais, Francois [1 ,2 ]
Sigalas, Iakovos [1 ,2 ]
Whitefield, David [1 ,2 ]
机构：
[1] Univ Witwatersrand, Sch Chem & Met Engn, ZA-2050 Johannesburg, South Africa
[2] Univ Witwatersrand, DST NRF Ctr Excellence Strong Mat, ZA-2050 Johannesburg, South Africa
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 01期
关键词：
Sintering; Mechanical properties; Spinels; ZrO2; GRAIN-SIZE; ZIRCONIA; TRANSFORMATION; TOUGHNESS; SPINEL;
D O I：
10.1016/j.ceramint.2021.09.134
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 effects of the addition of tetragonal 3mol% Y2O3 - ZrO2 into a MgAl2O4 spinel matrix were investigated. MgAl2O4 spinel's lacking mechanical properties prevent further utilization in many structural and refractory applications even though it has excellent chemical and thermal stability. The addition of tetragonal-ZrO2 was observed to improve the hardness, fracture toughness and biaxial flexural strength of MgAl2O4 materials. Moreover, the additions of 3mol% Y2O3 - ZrO2 resulted in a reduction of the mean grain size.
引用
收藏
页码：563 / 568
页数：6
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