Paper Title:
Effects of Solid Volume Fraction on the Gelcasting of Alumina Suspensions
  Abstract

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, L. M. Zhang, H. F. Li, T. Ma, "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
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Won Seung Cho, Yeon Chul Yoo, Chin Myung Whang, Nam Hee Cho, Woon Suk Hwang, Jun Gyu Kim, Young Jae Kwon
Abstract:Porous alumina bodies were successfully prepared by spark plasma sintering of alumina powders with different amounts of graphite, and by...
1056
Authors: Jie Qiang Wang, Qing Hua Yu, Shao Hua Zheng, Zhi Wang
Abstract:Using NH4HCO3 solution as precipitant, the ultrafine 3Y-ZrO2/Al2O3 precursors were prepared by the liquid-phase precipitation method. The...
1137
Authors: R. Svinka, V. Svinka, G. Bula, T. Juettner, E. Palcevskis
Abstract:Light weight materials are produced according to the aerated concrete technology using slurries. In concentrated suspensions pore formation...
2266
Authors: Yun Huang, Ling Chen, Jian Dong Ye, Xiao Xi Li, Xi Mei Zhang, Chen Hui Ju
Abstract:A modified starch was employed to be the pore former in the in-situ consolidation forming process of porous alumina ceramic. In order to...
679
Authors: Tamara Molina, Monica Vicent, Enrique Sánchez, Rodrigo Moreno
V. EPD in Ceramic Processing
Abstract:Alumina-aluminium titanate (A-AT) composites and laminates have been recently investigated because they can provide improved flaw tolerance...
203