Advertisement

Journal of Materials Science

, Volume 36, Issue 10, pp 2523–2527 | Cite as

Pore structure of porous ceramics synthesized from water-based slurry by freeze-dry process

  • T. Fukasawa
  • Z.-Y. Deng
  • M. Ando
  • T. Ohji
  • Y. Goto
Article

Abstract

A unique porous ceramic with complex pore structure was synthesized by the freeze-dry process. A water-based ceramic slurry was frozen while controlling the growth direction of ice, and sublimation of the ice were generated by drying it at a reduced pressure. By sintering this green body, a porous ceramic with complex pore structure was obtained, where macroscopically aligned open pores exceeding 10 μm in size contained minute pores of about 0.1 μm in their internal walls. Wide control of the porosity was possible by changing the concentration of the starting slurry. The pore size distribution as well as the microstructure were substantially affected by the freezing and sintering temperatures. Optimization of the synthesis conditions was investigated in order to obtain the desired pore structure.

Keywords

Polymer Microstructure Porosity Pore Size Pore Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Eugene Ryshkewitch, J. Amer. Ceram. Soc. 36(2) (1953) 65.Google Scholar
  2. 2.
    V. M. Sleptsov, O. D. Shcherbina and G. V. Trunov, Poroshk. Metall. 7 (1975) 99.Google Scholar
  3. 3.
    M. B. Volf, “Technical Glasses” (Pitman, London, 1961).Google Scholar
  4. 4.
    A. Makishima, J. D. Mackensie and J. J. Hammel, J. Non-Cryst. Solids 31 (1979) 377.Google Scholar
  5. 5.
    A. J. Sherman, R. H. Tuffias and R. B. Kaplan, Am. Ceram Soc. Bulletin 70(6) (1991) 1025.Google Scholar
  6. 6.
    D. A. Hirschfeld, T. K. Li and D. M. Liu, Key Engineering Materials 115 (1996) 65.Google Scholar
  7. 7.
    K. Schwartzwalder and A. V. Somers, US patent no. 3, 090, 094, May 21 (1963).Google Scholar
  8. 8.
    F. F. Lange and K. T. Miller, Adv. Ceram. Mat. 2(4) (1987) 827.Google Scholar
  9. 9.
    R. M. Orenstein and D. J. Green, J. Amer. Ceram. Soc. 75(7) (1992) 1899.Google Scholar
  10. 10.
    K. R. Reszka and J. Reszka, High Tech. Ceramics Part A (1987) 707.Google Scholar
  11. 11.
    A. Oya, J. Sakano and S. Otani, Yogyo-Kyokai-shi 95(12) (1987) 1164.Google Scholar
  12. 12.
    T. Yokota, Chem. Eng. 42(11) (1997) 845. (in Japanese).Google Scholar

Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • T. Fukasawa
    • 1
  • Z.-Y. Deng
    • 1
  • M. Ando
    • 1
  • T. Ohji
    • 2
  • Y. Goto
    • 3
  1. 1.Synergy Ceramics LaboratoryFine Ceramics Research AssociationNagoyaJapan
  2. 2.Synergy Materials Research CenterNational Institute of Advanced Industrial Science and TechnologyNagoyaJapan
  3. 3.Corporate Research and Development CenterToshiba CorporationKawasakiJapan

Personalised recommendations