Paper Title:
New Processing of Textured Ceramics by Colloidal Processing Under High Magnetic Field
  Abstract

The controlled development of texture is one of the ways for effective in improving the physical and mechanical properties. We’ll demonstrate new processing of textured ceramics as an example of alumina by slip casting in a high magnetic field and subsequent heating. Susceptibility of diamagnetic α-alumina is very small, but the orientation energy of alumina particle by a high magnetic field becomes larger than the thermal energy. α-alumina of a rhombohedral structure shows anisotropic susceptibility, but this anisotropy has up to now been more or less ignored due to its very low value. However, in a high magnetic field the energy of crystal anisotropy becomes comparable to or larger than the energy of thermal motion. The degree of orientation depends on processing factors such as heating temperature, particle size, magnetic field and concentration of suspension, etc. This process technique confers several advantages and it is possible for this type of processing to be applied to other non-cubic ceramics, such as TiO2, ZnO, SnO, HAP, AlN, SiC, etc.

  Info
Periodical
Key Engineering Materials (Volumes 280-283)
Edited by
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages
721-728
DOI
10.4028/www.scientific.net/KEM.280-283.721
Citation
Y. Sakka, T. Suzuki, "New Processing of Textured Ceramics by Colloidal Processing Under High Magnetic Field", Key Engineering Materials, Vols. 280-283, pp. 721-728, 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: X.D. Li, Larry Wang, Tetsuhiko Onda, T. Akao, Motozo Hayakawa
Abstract:Centrifugal casting method was used to fabricate composites with graded structures in alumina-zirconia system. The composition profiles of...
293
Authors: Oleg Vasylkiv, Yoshio Sakka, Valeriy Skorokhod
2347
Authors: Oleg Vasylkiv, Yoshio Sakka, Valeriy Skorokhod
Abstract:The 0.75 to 3 mol% Y2O3-stabilized tetragonal ZrO2 and Al2O3/Y-TZP nano-composite ceramics with 0.2 to 0.7 wt% of alumina were produced by a...
615
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: 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