Freeze Casting of Aqueous Alumina Slurries with Glycerol
Abstract
Freeze-drying concepts were utilized in the shape forming of alumina parts by pressureless slip molding using aqueous slurries. a water solidification modifier, glycerol, was utilized to eliminate the defects associated with the expansion and ceramic particle rejection of water during freezing. Castable alumina slurries with solids loading up to 60 vol% were prepared and characterized using viscosity and zeta-potential measurements with and without glycerol additions. Frozen parts were dried under vacuum by sublimation of ice to obtain net-shape green bodies. the combined effects of high-solids-loading slurries, >57.5 vol%, and glycerol additions were essential for freeze casting to achieve highly dense alumina bodies with a uniform microstructure.
Recommended Citation
S. W. Sofie and F. Dogan, "Freeze Casting of Aqueous Alumina Slurries with Glycerol," Journal of the American Ceramic Society, Wiley-Blackwell, Dec 2004.
The definitive version is available at https://doi.org/10.1111/j.1151-2916.2001.tb00860.x
Department(s)
Materials Science and Engineering
Keywords and Phrases
Slurries; Alumina
International Standard Serial Number (ISSN)
0002-7820; 1551-2916
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2004 Wiley-Blackwell, All rights reserved.
Publication Date
01 Dec 2004
