Elastic Modulus of Alumina Carbon Refractory in Four Point Bending Test
Carbon-bonded alumina refractory composites were prepared with coarse alumina grains as the aggregates, flake graphite and glassy carbon from pyrolysis of phenolic resin as the matrix.The mechanical behavior and elastic modulus of the composites were investigated at room temperature with static resistance strain gauge in four-point bend test.It was shown that alumina-carbon composite exhibited an irreversible strain and non-linear behavior in the loading-unloading process.The secant modulus decreased with increasing content of aggregate.The cleavage, sliding and crumpling of flake graphite and development of microcrack at the matrix-aggregate interface resulted in a non-linear behavior of the refractory.
alumina-carbon refractory elastic modulus four-point bend non-linear
LI Bo GAO Yuming LIU Shaojie
School of High Temperature Materials and Magnesite Resources Engineering,University of Science and T USTL-Oriental Giant Advanced Ceramic Co.,Ltd. Anshan 114042,China
国际会议
西安
英文
1-5
2016-09-20（万方平台首次上网日期，不代表论文的发表时间）