Characterization of the alumina-zirconia ceramic system by ultrasonic velocity measurements

被引：13

作者：

Carreon, Hector ^{[1
]}

Ruiz, Alberto ^{[1
]}

Medina, Ariosto ^{[1
]}

Barrera, Gerardo ^{[1
]}

Zarate, Juan ^{[1
]}

机构：

[1] Inst Invest Met, Morelia 58000888, Mich, Mexico

来源：

MATERIALS CHARACTERIZATION | 2009年 / 60卷 / 08期

关键词：

Alumina-zirconia ceramic; Indentation hardness; Ultrasonic velocity; Density; Inverse correlation; TRANSFORMATION; COMPOSITES;

D O I：

10.1016/j.matchar.2009.02.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work an alumina-zirconia ceramic composites have been prepared with alpha-Al2O3 contents from 10 to 95 wt.%. The alumina-zirconia ceramic system was characterized by means of precise ultrasonic velocity measurements. In order to find out the factors affecting the variation in wave velocity, the ceramic composite have been examined by X-ray diffraction (XRD) and (SEM) scanning electron microscopy. it was found that the ultrasonic velocity measurements changed considerably with respect to the ceramic composite composition. In particular, we studied the behavior of the physical material property hardness, an important parameter of the ceramic composite mechanical properties, with respect to the variation in the longitudinal and shear wave velocities. Shear wave velocities exhibited a stronger interaction with microstructural and sub-structural features as compared to that of longitudinal waves. in particular, this phenomena was observed for the highest alpha-Al2O3 content composite. interestingly, an excellent correlation between ultrasonic velocity measurements and ceramic composite hardness was observed. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：875 / 881

页数：7

共 18 条

[1] Grain size influence on ultrasonic velocities and attenuation [J].