首页   按字顺浏览 期刊浏览 卷期浏览 Measurement methods to determine the elastic properties of oxides at elevated temperatu...
Measurement methods to determine the elastic properties of oxides at elevated temperatures

 

作者: NichollsJ. R.,   MendesC.,   HancockP.,  

 

期刊: Materials at High Temperatures  (Taylor Available online 1994)
卷期: Volume 12, issue 2-3  

页码: 85-94

 

ISSN:0960-3409

 

年代: 1994

 

DOI:10.1080/09603409.1994.11689473

 

出版商: Taylor&Francis

 

关键词: oxide scales;elastic properties;measurement methods

 

数据来源: Taylor

 

摘要:

Knowledge of the elastic properties of oxide scales has long been recognized as important in the understanding of how oxide scales fail at temperature. This paper examines the available measurement methods capable of determining the elastic properties of oxide scales. In the late 1960s a resonant frequency method was proposed that permitted the oxide modulus to be calculated from measurements of the stiffness of an oxidizing rod and knowledge of scale growth rates. This technique was the first to provide an‘in situ’method of measuring oxide properties at temperature. Recent developments now permit a fully automated measurement of oxide elastic properties on both rod-shaped and rectangular specimen geometries. These new developments are reviewed. Alternative methods that are available to measure the elastic properties of materials at elevated temperatures are examined and their applicability to thein situmeasurement of oxide elastic properties discussed. From this analysis it would appear that transient wave excitation methods offer the potential of rapid measurement of the resonant frequency of an oxidizing samplein situand would be capable of utilizing the analyses developed for resonant frequency to determine the oxide modulus.

 

点击下载:  PDF (900KB)



返 回