Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-23T11:23:48.335Z Has data issue: false hasContentIssue false
  • English
  • Français

Drying-induced forming of alumina ceramics using high solid-loaded slurries with addition of glycerol

Published online by Cambridge University Press:  03 March 2011

S.W. Jiang ,
S. Nakamura ,
S. Tanaka  and
K. Uematsu
S.W. Jiang
Affiliation:
Department of Chemistry, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
S. Nakamura
Affiliation:
Department of Chemistry, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
S. Tanaka
Affiliation:
Department of Chemistry, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
K. Uematsu*
Affiliation:
Department of Chemistry, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
*
a) Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

A new drying-induced forming (DIF) of ceramics has been developed using high solid-loaded alumina slurries with addition of glycerol, in which the slurry was simply dried in an open mold at the ambient condition. The drying-induced forming approach is facilitated by the high stability of concentrated slurries during drying where glycerol was added to maximize the critical solid loading and play simultaneously as a drying control agent. The drying and rheological behaviors of slurries were examined with respect to the glycerol addition. A slurry of 60 vol% solid loading with 20 wt% glycerol addition was chosen for the drying induced forming test. The green samples exhibited no bending or cracks, and a small degree of shrinkage anisotropy during sintering. The sintered samples showed a high relative density of 99.2% and an average strength of 420 MPa. We demonstrate here a possibility of producing near-net-shaped and bulk ceramic components in a simple scheme by using the drying-induced approach.

Keywords

CeramicSlurry
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 1 , January 2007 , pp. 244 - 248
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Lange, F.F.: Powder processing science and technology for increased reliability. J. Am. Ceram. Soc. 72, 3 (1989).Google Scholar
2Lewis, J.A.: Colloidal processing of ceramics. J. Am. Ceram. Soc. 83, 2341 (2000).Google Scholar
3Sigmund, W.M., Bell, N.S., and Bergstrom, L.: Novel powder-processing methods for advanced ceramics. J. Am. Ceram. Soc. 83, 1557 (2000).Google Scholar
4Lange, F.F.: Shape forming of ceramic powders by manipulating the interparticle pair potential. Chem. Eng. Sci. 56, 3011 (2001).CrossRefGoogle Scholar
5Takao, Y., Hotta, T., Naito, M., Shinohara, N., Okumiya, M., and Uematsu, K.: Microstructure of alumina compact body made by slip casting. J. Eur. Ceram. Soc. 22, 397 (2002).Google Scholar
6Tarì, G., Olhero, S.M., and Ferreira, J.M.F.: Drying-induced forming from highly concentrated alumina slips, in Ceram. Trans. 112, Ceram. Proc. Sci. VI edited by Hirano, S., Messing, G.L., Claussen, N. (Am. Ceram. Soc., Westerville, OH 2001), p. 483.Google Scholar
7Sato, K., Tanaka, S., Uchida, N., and Uematsu, K.: Novel characterization procedure of large defect in ceramics. Adv. Tech. Mat. Proc. J. (ATM) 6, 63 (2004).Google Scholar
8Uematsu, K., Uchida, N., and Tanaka, S.: New characterization method for macrostructures of ceramics hybrid material. Sci. Tech. Adv. Mater. 6, 135 (2005).Google Scholar
9Baramurugan, A., Kannan, S., and Rajeswari, S.: Synthesis of hydroxyapatite on silica gel surface by using glycerin as a drying control chemical additive. Mater. Lett. 57, 1244 (2003).Google Scholar
10Albano, M-P. and Garrido, L-B.: Influence of the slip composition on the properties of tape-cast alumina substrates. Ceram. Inter. 31, 57 (2005).Google Scholar
11Sofie, S-W. and Dogan, F.: Freeze casting of aqueous alumina slurries with glycerol. J. Am. Ceram. Soc. 84, 1459 (2001).Google Scholar
12Tarì, G. and Ferreira, J.M.F.: Influence of solid loading on drying-shrinkage behaviour of slip cast bodies. J. Eur. Ceram. Soc. 18, 487 (1998).Google Scholar
13Shui, A., Uchida, N., and Uematsu, K.: Origin of shrinkage anisotropy during sintering for uniaxially pressed alumina compacts. Powder Technol. 127, 9 (2002).Google Scholar
14Jiang, S.W., Matsukawa, T., Tanaka, S., and Uematsu, K.: Effect of powder characteristics, solid loading and dispersant on bubble content in aqueous alumina slurries. J. Eur. Ceram. Soc. 27, 879 (2006).CrossRefGoogle Scholar