Dispersion and Rheological Properties of Alumina Freeze Casting Slurries Containing Nanoparticle/Whisker SiC

Abstract:

Article Preview

The sedimentation density significantly decreased after addition of dispersant; the effect was more pronounced with pure alumina, as compared with SiC-containing slurry. With further addition of surfactant, the sedimentation density increased somewhat, but decreased with binderadditions. The suspension viscosity generally behaved in an opposite manner to the sedimentation density, i.e., low sedimentation density gave high low-shear viscosity, indicative of high structure formation in the suspended particles. Shear rate rheological measurements showed continuous shear thinning behavior.

Info:

Periodical:

Key Engineering Materials (Volumes 280-283)

Edited by:

Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li

Pages:

1035-1038

Citation:

T. Y. Yang et al., "Dispersion and Rheological Properties of Alumina Freeze Casting Slurries Containing Nanoparticle/Whisker SiC", Key Engineering Materials, Vols. 280-283, pp. 1035-1038, 2005

Online since:

February 2007

Export:

Price:

$38.00

[1] E.D. Kragness, M.F. Amateau and L. Messing: J. Comp. Mater. Vol. 25 (1991), p.416.

[2] N. Niihara: J. Ceram. Soc. Jpn. Vol. 99 (1991), p.974.

[3] K.T. Faber and A.G. Evans: Acta. Metall. Vol. 31 (1983), p.577.

[4] P.F. Becher, S.L. Hwang and C.H. Hsueh: MRS Bull. Vol. 20 (1995), p.23.

[5] S.W. Sofie and F. Dogan: J. Am. Ceram. Soc. Vol. 84 (2001), p.1459.

[6] M.D. Sack and C.S. Khadilkar: J. Am. Ceram. Soc. Vol. 66 (1983), p.488.

[7] K.P. Plucknett, C.H. Caceres and D.S. Wilkinson: ibid. Vol. 77 (1994), p.2137.

[8] U. Paik, V.A. Hackley and H.W. Lee: ibid. Vol. 82 (1999), p.833.

[9] K. Mikeska and W.R. Cannon: Advances in Ceramics, Vol. 9, edited by J.A. Mangel and G.L. Messing (American Ceramic Society, Ohio 1983), p.143.

[10] W.R. Cannon, R. Becker and K.R. Mikeska: Advances in Ceramics, Vol. 26, edited by M.F. Yan, K. Niwa, H.M. O'Bryan and W.S. Young (American Ceramic Society, Ohio 1989), p.525.