Effects of Solid Volume Fraction on the Gelcasting of Alumina Suspensions

Abstract:

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The effects of solid volume fraction (SVF) on the gelation of alumina suspensions for gelcasting, debonding and sintering of the green body were studied. It was found that with SVF rising, the gelation of alumina suspension delayed; and the strength of green body decreased. On the other hand, high SVF resulted in that polymerized acrylamide split at a relative low temperature. These phenomena manifest that the fast polymerization of monomers in high SVF alumina suspension was inhibited, and the flexibility of the gelcasting was improved. However, Excessive solid volume fraction was prone to a bad rheological behavior of alumina suspension, and deteriorated the microstructure and properties of sintered body.

Info:

Periodical:

Key Engineering Materials (Volumes 280-283)

Edited by:

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

Pages:

1041-1044

DOI:

10.4028/www.scientific.net/KEM.280-283.1041

Citation:

Y. Huang et al., "Effects of Solid Volume Fraction on the Gelcasting of Alumina Suspensions", Key Engineering Materials, Vols. 280-283, pp. 1041-1044, 2005

Online since:

February 2007

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Price:

$35.00

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