SiC Powder for Casting from Aqueous Suspension

Abstract:

The activation of silicon carbide by boron and carbon is required to obtain dense monophase sintered body from SiC powder. The presence of carbon renders casting from aqueous suspension impossible. The SiC powders with boron and extra carbon were prepared by combustion method (SHS), where carbon was bound to SiC particles in a stable way. The experiments showed that this powder could be used for processing by casting of aqueous suspension. Finally nearly dense polycrystals were obtained by pressureless sintering.

• Periodical: Advances in Science and Technology (Volume 45)
• Pages: 297-302
• DOI: https://doi.org/10.4028/www.scientific.net/AST.45.297
• Online since: October 2006
• Authors: Ludosław Stobierski, Jerzy Lis, Agnieszka Gubernat
• Keywords: Aqueous Suspension, Microstructure, Pressure Filtration, Self-Propagation High-Temperature Synthesis (SHS), Silicon Carbide (SiC)

References

[1] S. Prochazka.: the role of Boron and Carbon in the Sintering of Silicon Carbide. Special Ceramics 6, Popper P. (Ed. ), British Ceramics Research Association. Stoke-on Trent, England (1975) 172-181.

[2] L. Stobierski, A. Gubernat.: Sintering of silicon carbide- part I: effect of carbon, Ceramics International 29 (2003) 287-292.

DOI: 10.1016/s0272-8842(02)00117-7

[3] L. Stobierski, A. Gubernat.: Sintering of silicon carbide- part II: effect of boron, Ceramics International 29 (2003) 355-361.

DOI: 10.1016/s0272-8842(02)00144-x

[4] Zhong-Zhou Yi, Zhi-Peng Xie, Yong Huang, Jing-Tao Ma, Yi-Bing Cheng.: Study on gelcasting and properties of recrystallized silicon carbide. Ceramic International 28 (2002) 369-376.

DOI: 10.1016/s0272-8842(01)00104-3

[5] Dean-Mo Liu, Chen-Tsu Fu.: Effect of Rheological Behavior on Properties of Cast and Sintered Silicon Carbide. Ceramic International 22 (1996) 101-106.

DOI: 10.1016/0272-8842(95)00063-1

[6] Xu Hong Wang, Yoshiro Hirata.: Colloidal Processing and Mechanical Properties of SiC with Al2O3 and Y2O3. J. of the Ceramic Soc. Of Japan 112, 1, (2004) 22-28.

DOI: 10.2109/jcersj.112.22

[7] Shinn Yih Lee, Chen Tsu Fu.: The effect of rheological behavior of tape casting on the green sheet and sintered silicon carbide. Ceramics International 30 (2004) 151-156.

DOI: 10.1016/s0272-8842(03)00074-9

[8] L. Stobierski, E. Ermer, R. Pampuch, J. Lis, Supersaturated Solid Solution of Boron in SiC by SHS. Innov. Mater. 2, ed P. Vincenzini, Techma Stl. (1993), 111-117.

DOI: 10.1016/0272-8842(93)90054-u

[9] L. Stobierski, F. Thevenot.: Sintering of Boron Containing β-SiC Powders Obtained by SHS. Proc. of IMRS-ICAM-93, ed. S. Somiya, M. Doyma, M. Hasagawa. Elsevier Publl. 1994, 823-826.

DOI: 10.1016/b978-0-444-81991-8.50199-0