Advertisement

Journal of Materials Science

, Volume 32, Issue 5, pp 1341–1346 | Cite as

Effect of small amounts of additives on the sintering of high-purity Y-TZP

  • J. L SHI
  • T. S YEN
  • H SCHUBERT
Article

Abstract

Superfine Y-TZP powders of high purity were prepared by using clean-room facilities. The effects of several kinds of minute or small amounts of additives on the densification and microstructural development of the Y-TZP powder were investigated. It was found that ≤1 wt% ferric or calcium oxides did not affect the densification of the Y-TZP powder compacts, while the addition of sodium oxides retarded the densification and that of copper oxide accelerated it, and these effects are most obvious at an additive level of 1 wt%. The retardation of the densification by sodium oxide was found to result from the agglomeration effect of the powder, and the formation of the eutectic liquid phase between zirconia and copper oxides promoted the densification and grain growth during sintering of copper oxide-doped powder. In addition, sodium and copper oxides both destabilize the tetragonal Y-TZP and lead to the formation of monoclinic phase.

Keywords

Copper Oxide Monoclinic Phase Ferric Oxide Shrinkage Rate American Ceramic Society 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R. L. Coble, J. Appl. Phys. 32 (1961) 793.CrossRefGoogle Scholar
  2. 2.
    S. L. Bennison and M. P. Harmer, in “Ceramic Transactions”, Vol. 7, “Sintering Advanced Ceramics”, edited by C. A. Handwerker, J. E. Blendel and W. A. Kaysser (American Ceramic Society, Westerville, OH, 1990) pp. 1349.Google Scholar
  3. 3.
    K. A. Berry and M. P. Harmer, J. Am. Ceram. Soc. 69 (1986) 143.CrossRefGoogle Scholar
  4. 4.
    S. I. Bae and S. Baik, ibid. 77 (1994) 3499.Google Scholar
  5. 5.
    R. S. Garvie, R. H. J. Hannik and R. T. Pascoe, Nature(Lond.) 258 (1975) 703.CrossRefGoogle Scholar
  6. 6.
    A. H. Heuer and L. W. Hobbs (eds), “Advances in Ceramics”, Vol. 3, “Science and Technology of Zirconia, I” (American Ceramic Society, Columbus, OH, 1981).Google Scholar
  7. 7.
    N. Cluassen, M. Ruehle and A. H. Heuer (eds), “Advances in Ceramics”, Vol. 12, “Science and Technology of Zirconia, II” (American Ceramic Society, Columbus, OH, 1984).Google Scholar
  8. 8.
    S. Somiya, N. Yamamoto and H. Hanagida (eds), “Advances in Ceramics”, Vol. 24, “Science and Technology of Zirconia, III” (American Ceramic Society, Columbus, OH, 1988).Google Scholar
  9. 9.
    E. M. Levin and M. F. Mamurdie (eds), “Phase Diagrams for Ceramics”, Vol. III “1975 Supplement”, no. 4533, (American Ceramic Society, Columbus, OH, 1975) p. 214.Google Scholar
  10. 10.
    R. C. Weast (ed), “Handbook of Physical Chemistry”, 59th Edn (CRC, West Palm Beach, 1978) p. B–167.Google Scholar
  11. 11.
    M. Miyayama and R. J. Yanagida, J. Am. Ceram. Soc. 67 (1984) C–194.CrossRefGoogle Scholar
  12. 12.
    A. J.A. Winnubst and A. J. Burggraaf, in “Advances in Ceramics”, Vol. 24, “Science and Technology of Zirconia III”, edited by S. Somiya, N. Yamamoto and H. Hanagida (American Ceramic Society, Columbus, OH, 1988) p. 39.Google Scholar
  13. 13.
    E. M. Levin, C. R. Robbins and M. F. Mamurdie (eds), “Phase Diagrams for Ceramics”, Vol. II, “1969 Supplement”, no. 2145, (American Ceramic Society, Columbus, OH, 1969) p. 33.Google Scholar

Copyright information

© Chapman and Hall 1997

Authors and Affiliations

  • J. L SHI
    • 1
  • T. S YEN
  • H SCHUBERT
    • 2
  1. 1.Shanghai Institute of CeramicsShanghaiPeople’s Republic of China
  2. 2.Powder Metallurgy LaboratoryMax-Plank-Institute for Metal ResearchStuttgartGermany

Personalised recommendations