A novel method to evaluate Young%26apos;s modulus of ceramics at high temperature up to 2100 degrees C

作者：Liu Z; Bao Y W; Wan D T; Tian Y; Hu C L; Wei C G

来源：Ceramics International, 2015, 41(10): 12835-12840.

DOI：10.1016/j.ceramint.2015.06.120

• Young's modulus
• Ultra-high temperature
• Relative split ring method
• Graphite
• C/SiC/ZrB2 composite

Although it is important to understand Young's modulus and creep behavior of ceramics at ultra-high temperature from 1500 degrees C to 2300 degrees C, measuring these properties accurately at high temperature above 1600 degrees C is not very easy due to the difficulty of the deformation measurement or invalid testing instruments at such high temperature. This work presented a solution to this problem via a combination of the split ring test and relative method (viz, relative split ring method). The real deformation of the split ring at ultra-high temperature could be easily determined from the difference of cross-beam displacements between the split ring and a rigid disk under the same loads. Experiments of graphite and C/SiC/ZrB2 composite at ultra-high temperature demonstrated the validity and convenience of the relative split ring method, which would provide a simple and efficient approach to evaluate Young's modulus of ceramic materials at ultra-high temperature.

• 出版日期2015-12
• 单位中国建筑材料科学研究总院; 武汉理工大学