Ultrasonic measurement of the moduli of elasticity of refractory materials at high temperatures
Abstract
A method of ultrasonic measurement of moduli of elasticity of refractory materials up to temperatures of the order of 2000 K is described. The use of magnetostrictive transducers allows operation in the 150-350 kHz frequency range of filamentary test samples with a diameter of about 2 mm and a length of 40-50 mm. Two practical examples are considered, for alpha alumina and for gamma alumina obtained by plasma torch projection.
- Publication:
-
Memoires Scientifiques de la Revue de Metallurgie
- Pub Date:
- February 1980
- Bibcode:
- 1980MeSRM..77..145F
- Keywords:
-
- High Temperature Tests;
- Modulus Of Elasticity;
- Refractory Materials;
- Ultrasonic Tests;
- Magnetostriction;
- Temperature Dependence;
- Instrumentation and Photography