Preparation of Complicated SiC Green Bodies via Aqueous Slip Casting

Abstract:

Article Preview

Two domestic silicon carbide powders with different particle size distribution and one petroleum coke powder were blended in proportion and then dispersed in aqueous medium. Green bodies were solidified from these suspensions via conventional slip casting. The effects of pH, solid loading, and the amount of dispersant on the formability and packing ability were evaluated. The results showed that the pH within 9.5-10.5, solid loading of 42vol%, aging time more than 24h, and 0.3wt% of dispersant were optimal. Complicated green bodies with height of 300mm and thickness of 3.5mm were obtained. The corresponding suspension viscosity was 1200mPa∙s and the relative packing density was 64.8%. The density is 3.01g∙cm-3 and the flexural strength is 305±15 MPa after reaction sintering. These results may be attributed to accurately using of dispersant and in-depth study of processing parameter.

Info:

Periodical:

Key Engineering Materials (Volumes 434-435)

Edited by:

Wei Pan and Jianghong Gong

Pages:

88-91

Citation:

Y. Li et al., "Preparation of Complicated SiC Green Bodies via Aqueous Slip Casting ", Key Engineering Materials, Vols. 434-435, pp. 88-91, 2010

Online since:

March 2010

Export:

Price:

$38.00

[1] X. Xu, M. I. L L. Oliveira and J. M. F. Ferreira: J. Mater. Sci. Lett. Vol. 20 (2001), p. (2043).

[2] V.A. Hackey and U. Paik: J. Am. Ceram. Soc. Vol. 80 (1997), p.1781.

[3] Q.W. Huang and G. J. Qiao, Rare Metals Eng. Vol. 30 (2001), p.150.

[4] O.P. Chakrabarti, P.K. Das and J. Mukerji: Mater. Chem. Phys. Vol. 67 (2001), p. (1992).

[5] U. Paik and H. Cheo, Mater. Sci. Eng. A Vol. 334 (2002), p.267.

[6] R.J. Hunter: Potential in Colloid Science Principles and Applications (Academic, London, 1981).

[7] J. Cesarano and I. A. Aksay: J. Am. Ceram. Soc. Vol. 71 (1988), p.1062.

[8] G. Tari and J.M.F. Ferreria: J. Euro. Ceram. Soc. Vol. 18 (1998), p.487.

[9] J.N. Ness and T. F. Page: J. Mater. Sci. Vol. 21 (1986), p.1377.

Fetching data from Crossref.
This may take some time to load.