SOLID PARTICLE EROSION OF BRITTLE MATERIALS .8. THE EROSION RATE OF ZRO2 CERAMICS

被引：0
|
作者：
WADA, S
WATANABE, N
机构：
[1] Toyoto Central Research &, Development Lab Inc, Japan
来源：
NIPPON SERAMIKKUSU KYOKAI GAKUJUTSU RONBUNSHI-JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 1988年 / 96卷 / 05期
关键词：
Erosion - Microscopic examination--Scanning electron microscopy;
D O I：
10.2109/jcersj.96.599
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：
Ten kinds of commercial ZrO2 ceramics were eroded at 250-300 m/s by SiC abrasive with an average diameter of 500 μm. These ZrO2 ceramics are classified into three groups: one is Y2O3-doped tetragonal ZrO2(TZP), another is a composite of Y2O3-doped tetragonal ZrO2 and Al2O3, and the other is MgO stabilized ZrO2 including cubic ZrO2 as the main crystal phase. Among these three groups, TZP showed the lowest erosion rate, 2.1-2.8×10-3 cm3/cm3, which is comparable to that of hot pressed Si3N4. The erosion resistance of TZP is explained by elevated fracture toughness due to the reorientation of tetragonal ZrO2 domains by the impact stress of the abrasive.
引用
收藏
页码：599 / 602
页数：4
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