Design and Application of Testing Equipment for Determining the Mechanical Properties of Ceramics at Ultrahigh Temperatures

Abstract:

The elastic modulus and fracture strength at ultrahigh temperatures over 1500°C is very important for Ultrahigh temperature ceramics (UHTCs), but no available method can be used so far because of the limitation of the testing equipments. In this work, a novel testing equipment was developed to determine the elastic modulus and fracture strength (bending, tensile and shear strength) of ceramics from 1500 °C to 2200 °C. To check the availability and reliability of this equipment, several typical UHTCs including C, C/C fiber woven composite and C/SiC ceramic composite, were used as the testing samples. The results indicate that this new designed testing equipment is a good and feasible for evaluating the ultrahigh temperature mechanical properties of ceramics over 1500 °C in vacuum or in air.

• Periodical: Key Engineering Materials (Volume 680)
• Pages: 3-8
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.680.3
• Online since: February 2016
• Authors: De Tian Wan*, Yi Wang Bao, Yuan Tian, Zhao Liu, Yan Qiu
• Keywords: C, C/C, C/SiC, Elastic Modulus, Strength, Ultrahigh Temperature Ceramic

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