Journal of Materials Science

, Volume 28, Issue 7, pp 1788–1792 | Cite as

Effect of processing conditions on the characteristics of pores in hot isostatically pressed alumina

  • K. Uematsu
  • M. Sekiguchi
  • J. -Y. Kim
  • K. Saito
  • Y. Mutoh
  • M. Inoue
  • Y. Fujino
  • A. Miyamoto
Papers
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Accepted:

Abstract

Effect of processing conditions on the characteristics of residual pores was studied with an optical microscope in hot isostatically pressed translucent alumina ceramics. Green bodies formed by isostatic pressing were sintered at 1300, 1400 and 1600°C and then hot isostatically pressed at a temperature 50°C below the respective sintering temperature for 1 h at 100 MPa. All specimens were fully dense within experimental accuracy (±0.1%), and the grain size increased with increasing sintering/hot isostatic pressing temperatures. A variety of pores were found in all specimens. The distribution of pores was uniform at various locations within the specimen. The pore population decreased with increasing pore size, but was finite in the size range exceeding 84 μm. The pores in this range increased with increasing sintering/hot isostatic pressing temperature. Except for these large pores, the pore population was similar under all processing conditions.

Keywords

Polymer Alumina Grain Size Pore Size Optical Microscope 
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.
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References

  1. 1.
    F. F. Lange, “Fracture Mechanics of Ceramics, I”, edited by R. C. Bradt, D. P. H. Hasselman and F. F. Lange (Plenum, New York, 1974) p. 3.Google Scholar
  2. 2.
    N. M. Alford, K. Kendall, W. J. Clegg andJ. D. Birchall,Adv. Ceram. Mater. 3 (1988) 113.Google Scholar
  3. 3.
    F. M. Ernsberger,ibid. 3 (1988) 161.Google Scholar
  4. 4.
    F. F. Lange,J. Amer. Ceram. Soc. 72 (1989) 3.Google Scholar
  5. 5.
    J. Sung andP. S. Nicholson,ibid. 71 (1988) 788.Google Scholar
  6. 6.
    B. J. Kellett andF. F. Lange,ibid. 71 (1988) 7.Google Scholar
  7. 7.
    K. G. Ewsuk andG. L. Messing,J. Mater. Sci. 19 (1984) 1530.Google Scholar
  8. 8.
    G. G. Long, S. Krueger andR. A. Page,J. Amer. Ceram. Soc. 74 (1991) 1578.Google Scholar
  9. 9.
    D. R. Johnson, M. A. Janney andR. W. McClung, “Nondestructive Testing of High Performance Ceramics” (American Ceramic Society, Westerville, Ohio, USA, 1987) p. 19.Google Scholar
  10. 10.
    J. G. Schroth andA. P. Druschitz,J. Amer. Ceram. Soc. 72 (1989) 1292.Google Scholar
  11. 11.
    D. E. Yuhas andL. W. Kessler, “Materials Characterization”, Materials Research Society, Vol. 15 (Plenum, New York, 1983) p. 413.Google Scholar
  12. 12.
    K. A. Hardman-Rhyne andN. F. Berk,J. Amer. Ceram. Soc. 69 (1986) C285.Google Scholar
  13. 13.
    K. G. Frase andK. A. Hardman-Rhyne,ibid. 71 (1988) 1.Google Scholar
  14. 14.
    E. R. Generazio, D. J. Roth andD. B. Stang,ibid. 72 (1989) 1282.Google Scholar
  15. 15.
    M. D. Weeks andJ. W. Laughner, “Advances in Ceramics”, Vol. 21 (American Ceramic Society, Westerville, Ohio, USA, 1987) p. 793.Google Scholar
  16. 16.
    M. Miyashita, J.-Y. Kim, N. Uchida andK. Uematsu, MRS Symp. Proc. Vol. 251 (1992) p. 151.Google Scholar
  17. 17.
    K. Uematsu, K. Itakura, N. Uchida, K. Saito, A. Miyamoto, andT. Miyashita,J. Am. Ceram. Soc. 73 (1990) 74.Google Scholar
  18. 18.
    K. Itakura, N. Uchida, K. Uematsu, K. Saito, A. Miyamoto andT. Miyashita,J. Ceram. Soc. Jpn Inter. Ed. 96 (1988) 1560.Google Scholar
  19. 19.
    M. Sekiguchi, K. Itakura, J.-Y. Kim, Z. Kato, N. Uchida, K. Uematsu, K. Saito andA. Miyamoto,Seramikkusu-Ronbunshi 97 (1989) 1486.Google Scholar
  20. 20.
    K. Uematsu, K. Itakura, M. Sekiguchi, N. Uchida, K. Saito andA. Miyamoto,J. Amer. Ceram. Soc. 72 (1989) 1239.Google Scholar
  21. 21.
    K. Uematsu, J.-Y. Kim, N. Uchida, Z. Kato andK. Saito,Seramikku-Ronbunshi 98 (1990) 1515.Google Scholar
  22. 22.
    K. Uematsu, J.-Y. Kim, M. Miyashita, N. Uchida andK. Saito,J. Amer. Ceram. Soc. 73 (1990) 2555.Google Scholar
  23. 23.
    K. Uematsu, M. Miyashita, M. Seikguchi, J.-Y. Kim, N. Uchida andK. Saito,J. Amer. Ceram. Soc., in press.Google Scholar
  24. 24.
    A. Roosen andH. K. Bowen,ibid. 71 (1988) 970.Google Scholar
  25. 25.
    J. Zheng andJ. S. Reed,ibid. 72 (1989) 810.Google Scholar
  26. 26.
    W. D. Kingery, in “Ceramic Processing before Firing”, edited by G. Y. Onoda and L. L. Hench (Wiley, New York, 1978) pp. 291.Google Scholar
  27. 27.
    W. D. Kingery andB. Francois, in “Sintering and Related Phenomena”, edited by G. C. Kuczynski, N. A. Hooton and C. F. Gibbon (Gordon and Breach, New York, 1976) pp. 471.Google Scholar
  28. 28.
    B. J. Kellett andF. F. Lange,J. Amer. Ceram. Soc. 72 (1989) 725.Google Scholar
  29. 29.
    K. Uematsu, M. Miyashita, J.-Y. Kim, N. Uchida,J. Amer. Ceram. Soc.,75 (1992) 1016.Google Scholar
  30. 30.
    J.-Y. Kim, M. Miyashita, N. Uchida andK. Uematsu,J. Mater. Sci.,27 (1992) 6609.Google Scholar
  31. 31.
    J.-Y. Kim, M. Miyashita, M. Inoue, N. Uchida, K. Saito andK. Uematsu,ibid. 27 (1992) 587.Google Scholar
  32. 32.
    M. Inoue, J.-Y. Kim, Z. Kato, N. Uchida, K. Uematsu andK. Saito, in “Transactions of the Materials Research Society of Japan” (Uchida-Rokakuho, Tokyo, Japan, 1990) p. 192.Google Scholar
  33. 33.
    M. G. Gee,Mater. Sci. 26 (1984) 85.Google Scholar
  34. 34.
    Y. Matsuo andK. Kitakami, in “Fracture Mechanics of Ceramics”, Vol. 7, edited by R. C. Bradt, A. G. Evans, D. P. H. Hasselman and F. F. Lange (Plenum, New York, 1986). p. 223.Google Scholar
  35. 35.
    O. Abe, S. Kanzaki andH. Tabata,Seramikku Ronbunnshi 97 (1989) 12.Google Scholar
  36. 36.
    O. Abe, S. Aoki, S. Kanzaki andH. Tabata,ibid. 97 (1989) 432.Google Scholar

Copyright information

© Chapman & Hall 1993

Authors and Affiliations

  • K. Uematsu
    • 1
  • M. Sekiguchi
    • 1
  • J. -Y. Kim
    • 1
  • K. Saito
    • 1
  • Y. Mutoh
    • 3
  • M. Inoue
    • 3
  • Y. Fujino
    • 4
  • A. Miyamoto
    • 2
  1. 1.Department of ChemistryNagaoka University of TechnologyNiigataJapan
  2. 2.Advanced Technology Research CentreNippon Kokan LtdKawasakiJapan
  3. 3.Department of Mechanical EngineeringNagaoka University of TechnologyNiigataJapan
  4. 4.Department of Planning and ManagementNagaoka University of TechnologyNiigataJapan

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