Relationship between the ultrasonic velocity and the degree of sintering of alumina-based materials

被引：3
|
作者：
Berutti, F. A. [1 ]
Alves, A. K. [1 ]
Bergmann, C. P. [1 ]
机构：
[1] Univ Fed Rio Grande do Sul, Dept Mat Engn, BR-90035190 Porto Alegre, RS, Brazil
来源：
MATERIALS & DESIGN | 2010年 / 31卷 / 08期
关键词：
D O I：
10.1016/j.matdes.2010.03.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of this work was to investigate the application of the ultrasonic velocity in the evaluation and characterization of the porosity and density in alumina-based materials. To make this possible, ceramic bodies with 94.3%wt. in Al(2)O(3) were uniaxially pressed and sintered at temperatures between 1100 and 1600 degrees C. In the ultrasonic tests, a piezoelectric transducer with 4 MHz was used. The obtained image was treated via software and an oscilloscope was used for standardization. The ultrasonic velocity was used as a parameter to indicate the correlation between the acoustic properties and the microstructure of the material. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3996 / 4000
页数：5
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