Effects of Characteristic of Green Body on the Microstructure and Properties of Reaction Bonded Silicon Carbide


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In this paper, reaction bonded silicon carbide (RBSC) was prepared by silicon infiltration with silicon carbide and carbon black as raw materials. The effects of the mixing methods with different binders on density of green body were compared. The influences of phenolic resin content, forming pressure, sintering temperature of samples on the performance of green body, mechanical microstructure and properties of RBSC were studied. The result shows that the density of green body by wet-mixing with alcohol-soluble binder (phenolic resin) was much better than semi-dry-mixing with usual water-soluble binders (polyvinyl alcohol and carboxy methyl cellulose sodium). The bending strength of green body prepared with phenolic resin at the content of 12 wt.% reached to the maximum value. The density of RBSC increased generally with phenolic resin content increasing at temperature range from 1550 to 1650 °C. The bending strength of RBSC increased firstly and then decreased with phenolic resin content increasing at a sintering temperature of 1600 °C. The optimum condition for fabricating RBSC was sintering at 1600 °C with 12 wt.% phenolic resin, the density, porosity and bending strength of the obtained RBSC was 3.06 g·cm-3, 0.05% and 370±54 MPa, respectively.



Edited by:

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




S. C. Xu et al., "Effects of Characteristic of Green Body on the Microstructure and Properties of Reaction Bonded Silicon Carbide", Materials Science Forum, Vol. 922, pp. 98-103, 2018

Online since:

May 2018




* - Corresponding Author

[1] S. Suyama, T. Kameda, Y. Itoh, Development of high-strength reaction-sintered silicon carbide, Diam. Relat. Mater. 12 (2003) 1201-1204.

DOI: https://doi.org/10.1016/s0925-9635(03)00066-9

[2] L. Vargas-Gonzalez, R.F. Speyer, J. Campbell, Flexural Strength, Fracture Toughness, and Hardness of Silicon Carbide and Boron Carbide Armor Ceramics, Int. J. Appl. Ceram. Tec. 7 (2010) 643-651.

DOI: https://doi.org/10.1111/j.1744-7402.2010.02501.x

[3] A. Yurkov, A. Malakho, V. Avdeev, Corrosion behavior of silicon nitride bonded silicon carbide refractory material by molten copper and copper slag, Ceram. Int. 43 (2017) 4241-4245.

DOI: https://doi.org/10.1016/j.ceramint.2016.12.064

[4] B. Román-Manso, Y. Chevillotte, M.I. Osendi, M. Belmonte, P. Miranzo, Thermal conductivity of silicon carbide composites with highly oriented graphene nanoplatelets, J. Eur. Ceram. Soc. 36 (2016) 3987-3993.

DOI: https://doi.org/10.1016/j.jeurceramsoc.2016.06.016

[5] H.L. Liu, Y.L. Huo, C.P. Wang, J. Tang, Y.F. Chen, Gel Casting of Large-Sized, Complex-Shaped RBSC Component, Key Eng. Mater. 512-515 (2012) 395-398.

DOI: https://doi.org/10.4028/www.scientific.net/kem.512-515.395

[6] S. Meier, J.G. Heinrich, Processing-microstructure-properties relationships of MoSi2-SiC composites, J. Eur. Ceram. Soc. 22 (2002) 2357-2363.

DOI: https://doi.org/10.1016/s0955-2219(02)00035-3

[7] I.G. Crouch, M. Kesharaju, R. Nagarajah, Characterisation, significance and detection of manufacturing defects in Reaction Sintered Silicon Carbide armour materials, Ceram. Int. 41 (2015) 11581-11591.

DOI: https://doi.org/10.1016/j.ceramint.2015.06.083

[8] P.Z. Takacz, T.L. Hursman, J.T. Williams, Application of silicon carbide to synchrotron radiation mirrors, Nucl. Instrum. Methods Phys. Res. 222 (1984) 133-145.

DOI: https://doi.org/10.1016/0167-5087(84)90517-9

[9] S. Guo, G. Zhang, L. Li, W. Wang, X. Zhao, Effect of materials and modelling on the design of the space-based lightweight mirror, Mater. Design 30 (2009) 9-14.

DOI: https://doi.org/10.1016/j.matdes.2008.04.056

[10] N.K. Reddy, Reaction-bonded silicon carbide refractories, Mater. Chem. Phys. 76 (2002) 78-81.

[11] O.P. Chakrabarti, S. Ghosh, J. Mukerji, Influence of grain size, free silicon content and temperature on the strength and toughness of reaction-bonded silicon carbide, Ceram. Int. 20 (1994) 283-286.

DOI: https://doi.org/10.1016/0272-8842(94)90042-6

[12] Q. Huang, G. Qiao, J. Gao, Z. Jin, Effects of Green Processing Paramters on Microstrucuter and Properties of Reaction-Bonded Silicon Caibide, Rare Metal Mat. Eng. (2001) 149-152.

[13] S. Li, Z. Xie, Y. Zhang, L. Yang, Effect of Carbon Black on the Microstructure and Mechanical Behaviors of Reaction Bonded Silicon Carbide Ceramics Reinforced by Chopped Fiber, Rare Metal Mat. Eng. 44 (2015) 689-692.

[14] Z. Zhang, Y. Zhang, H. Gong, X. Guo, Y. Zhang, X. Wang, J. Yu, Influence of Carbon Content on Ceramic Injection Molding of Reaction-Bonded Silicon Carbide, Int. J. Appl. Ceram. Tec. 13 (2016) 838-843.

DOI: https://doi.org/10.1111/ijac.12570