The Preparation and Properties of Clay Bonded Silicon Carbide by Using Silicon Carbide Dusting Powder


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In this paper, clay bonded silicon carbide was prepared through pressureless sintering process with silicon carbide dusting powder as raw materials and clay as sintering additive. The effects of the ball-milling method, sintering temperature and clay contents on the density, microstructure and mechanical properties of clay bonded silicon carbide refractory were studied. The planetary ball-milling was a good method to improve the density of the green body, and the density was increased simultaneously with an increase of the clay content. The liquid phase derived from low-melting eutectic mixtures of clay could prevent the superlative oxidation of silicon carbide. The mass increment of sintered samples decreased firstly and then increased at the sintering temperature range from 1250 to 1500 °C. The open porosity of samples decreased with the clay addition at a content range from 10 to 30 wt.%. The bending strength of the samples decreased firstly and then increased with the clay addition increasing. The optimum condition for preparing clay bonded silicon carbide with silicon carbide dusting powder was sintering at 1350 °C with 20 wt.% clay, and the obtained sample with a porosity of 24% achieved the bending strength of 78±7 MPa.



Edited by:

Junichi Hojo, Tohru Sekino, Jian Feng Yang, Hyung Sun Kim and Wen Bin Cao




S. C. Xu et al., "The Preparation and Properties of Clay Bonded Silicon Carbide by Using Silicon Carbide Dusting Powder", Materials Science Forum, Vol. 922, pp. 143-148, 2018

Online since:

May 2018




* - Corresponding Author

[1] J.P. Huo, S.X. Pan, S.X. Pan, C.W. Li, Situation of China's refractories industry in last sixty years, China's Refractory. 18 (2009) 1-5.

[2] C.Y. Bai, X.Y. Deng, J.B. Li, Y.N. Jing, W.K. Jiang, Z.M. Liu, Y. Li, Fabrication and properties of cordierite-mullite bonded porous SiC ceramics, Ceram. Int. 40 (2014) 6225-6231.


[3] Y. Li, Z.Y. Fu, B.L. Su, Hierarchically Structured Porous Materials for Energy Conversion and Storage, Adv. Funct. Mater. 22 (2012) 4634-4667.


[4] R. Riedel, G. Passing, H. Schonfelder, R.J. Brook, Synthesis of dense silicon-based ceramics at low temperatures, Nature 355 (1992) 714-717.


[5] Y.S. Chun, Y.W. Kim, Processing and mechanical properties of porous silica-bonded silicon carbide ceramics, Met. Mater. Int. 11 (2005) 351-355.


[6] J. Chen, K. Chen, Y.G. Liu, Z.H. Huang, M.H. Fang, J.T. Huang, Effect of Al2O3 addition on properties of non-sintered SiC–Si3N4 composite refractory materials, Int. J. Refract. Met. Hard Mater. 46 (2014) 6-11.


[7] Q. Liu, F. Ye, Z.P. Hou, S.C. Liu, Y. Gao, H.J. Zhang, A new approach for the net-shape fabrication of porous Si3N4 bonded SiC ceramics with high strength, J. Eur. Ceram. Soc. 33 (2013) 2421-2427.


[8] Q.Y. Qing, China Metallurgical Encyclopedia, M. Beijing: Metallurgical industry press, (1997).

[9] A.J. Leonard, Structural analysis of the transition phases in the kaolinite-mullite thermal sequence, J. Am. Ceram. Soc. 60 (1977) 37-43.

[10] V.M. Grosheva, V.M. Panasevich, V.Yu. Boichun, Stability of mullite at high temperatures, Glass Ceram. 25 (1968) 180-181.


[11] W.X. Cui, Q.F. Min, Process and properties of clay bonded SiC refractories, Refractories & Lime. 5 (2011) 26-29.

[12] S.Z.A. Bukhari, J.H. H, J. Lee, I.H. S, Fabrication and optimization of a clay-bonded SiC flat tubular membrane support for microfiltration applications, Ceram. Int. 43 (2017) 7736–7742.