Journal of Inorganic Materials >
Preparation of Silicon Carbide Reticulated Porous Ceramics Sintered at Low Temperature with PCS as Sintering Additive
(Structural Ceramics Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)
Received date: 2009-04-20
Revised date: 2009-08-14
Online published: 2010-02-20
Silicon carbide (SiC) reticulated porous ceramics (RPCs) were fabricated by polymer sponge replicas method with PCS as sintering additive. Slurry with PCS as binder was recoated on the SiC reticulated porous performs by centrifuging process. The effects of sintering temperature and holding time on SiC RPCs microstructure and properties were investigated. On consideration of the strength and strut porosity of RPCs, the RPCs can be sintered at 1100℃ holding for 1h. With PCS slurry as recoating slurry, the strut thickness of SiC RPCs is very uniform. The optimal compressive strengths of the RPCs prepared by 10PPI sponge and 25PPI sponge are (1.08±0.21)MPa and (2.19±0.32)MPa, respectively. The refectory of them is as high as 1690℃. At the same time, the RPCs with PCS as sintering additive have good thermal shock resistance. After quenched at 1400℃, thermal shock resistance parameter of the RPCs prepared with 25PPI sponge is only 0.36.
YAO Xiu-Min , HUANG Zheng-Ren , TAN Shou-Hong . Preparation of Silicon Carbide Reticulated Porous Ceramics Sintered at Low Temperature with PCS as Sintering Additive[J]. Journal of Inorganic Materials, 2010 , 15(2) : 168 -172 . DOI: 10.3724/SP.J.1077.2010.00168
［1］佘继红, 江东亮. 碳化硅陶瓷的发展与应用.陶瓷工程, 1998, 32(3): 3-11.
［2］Shinozaki S S, Williams R M, Juterbock B N, et al. Microstructural developments in pressureless-sintered beta-sic materials with Al-additions, B-additions, and C-additions. Am.Ceram. Soc. Bull., 1985, 64(10): 1389-1393.
［3］Tajima Y, Kingery W D. Solid solubility of aluminum and boron in siliconcarbide. J.Am.Ceram.Soc., 1982, 65(2): C27-C30.
［4］陈朝辉, 张长瑞, 周新贵, 等. 先驱体结构陶瓷. 长沙:国防科技大学出版社, 2003.
［5］Ha J S, Lim C S, Kim C S, et al.A new process for Al2O3/SiC nanocomposites by polycarbosilane infiltration. Materials Chemistry and Physics, 2002, 75(2): 241-245.
［6］Zheng G B, Sano H, Suzuki K, et al. A TEM study of microstructure of carbon fiber/polycarbosilane-derived SiC composites. Carbon, 1999, 37(12): 2057-2062.
［7］Matthews S, Edirisinghe M J, Folkes M J. Effect of pre-pyrolysis heat treatment on the preparation of silicon carbide from a polycarbosilane precursor. Ceram. Inter., 1999, 25(1): 49-60.
［8］Yajima S, Okamura K, Shishido T, et al. Joining of SiC to SiC using polyborosiloxane. Am. Ceram.Soc. Bull., 1981, 60(2):253-255.
［9］Lipowitz J. Polymer-derived ceramic fibers. American Ceramic Society Bulletin, 1991, 70(12):1888-1894.
［10］West R, David L D, Djurovich P, et al. Polysilastyrenephenylmethylsilanedimethylsilane co-polymers as precursors to siliconcarbide. Am. Ceram. Soc. Bull., 1983, 62(8): 899-903.
［11］Schilling C L, Wesson J P, Williams T C. Polycarbosilane precursors for silicon-carbide. Am. Ceram. Soc. Bull., 1983, 62(8): 912-915.
［12］Ziegler G, Richter I, Suttor D. Fiber-reinforced composites with polymer-derived matrix: processing, matrix formation and properties. Composites Part-A, 1999, 30(4): 411-417.
［13］Bao X, Nangrejo M R, Edirisinghe M J. Synthesis of silicon carbide foams from polymeric precursors and their blends. J. Mater. Sci., 1999, 34(11): 2495-2505.
［14］Yao X M, Tan S H, Huang Z R, et al. Effect of recoating slurry viscosity on the properties of reticulated porous silicon carbide ceramics. Ceram. Int., 2006, 32(2):137-142.
［15］Hasegawa Y, Okamura K. Synthesis of continuous silicon-carbide fiber. J. Mater. Sci., 1983, 18(12): 3633-3644.
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