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SINTERING KINETICSEVALUATION OF POROUS SIC CERAMICS
https://doi.org/10.17073/1683-4518-2014-11-62-66
Abstract
Porous SiC ceramics made by burning out pore formerin sintering process were investigated by stepwise isother-maldilatometry (SID) measurement associated with X-ray diffraction (xRd) phase identification, scanning electron microscope (SEM) observation and mechanical properties analysis. The paper analyzed the step isothermal shrinkage data by Makipirtti-Meng method and the shrinkage data were found to fit well with the rate equation proposed in this method. Kinetic parameters were evaluated and sintering was found to occur through two major mechanisms of which the activation energies were 55,4 and 325,4 kJ/mol respectively, which relate to generation and sinter of oxidation products. The sintering temperature had great influence on properties of sintered products such as open porosity and flexural strength. The results were well supported by microstructural analysis of sintered specimens. Ill. 6. Ref. 12. Tab. 1.
About the Authors
Jia LiuChina
Xuebin Zhang
China
Haijun Wu
China
Jixiang Hu
China
Zelin Wan
China
Yi Feng
China
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Supplementary files
For citation: Liu J., Zhang X., Wu H., Hu J., Wan Z., Feng Y. SINTERING KINETICSEVALUATION OF POROUS SIC CERAMICS. NOVYE OGNEUPORY (NEW REFRACTORIES). 2014;(11):62-66. https://doi.org/10.17073/1683-4518-2014-11-62-66
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