Synthesis of SiC Ceramics from Coal Gangue
The synthesis and the sintering of SiC from coal gangue by carbothermal synthesized in N2 atmosphere are studied. The material, 5 percent carbon black added and sintered at 1400°C for 2 hours, had good properties and a bending strength of 137.8MPa. Too high temperature or too long holding time made the properties of the material to decrease. β-SiC found by observing the microstructure is a major crystal phase in the synthesized ceramics, which would lead to fine mechanical properties.
Hyung Sun Kim, Sang-Yeop Park, Bo Young Hur and Soo Wohn Lee
S. H. Jia, "Synthesis of SiC Ceramics from Coal Gangue", Materials Science Forum, Vols. 486-487, pp. 378-381, 2005