The purpose of this study is to fabricate high-strain rate above 10 -2 s-1 superplastic zirconia systems. Dense, homogeneous and fine-grained zirconia systems of MgO and TiO2 added 3YTZ (3mol%Y2O3 doped tetragonal zirconia), and Al 2O3 and/or Mn3O4 added 3YTZ were obtained by colloidal processing The grain growth was controlled by cation lattice diffusion and the grain growth rate was enhanced by adding TiO 2, Al2O3 and/or Mn3O4. High-strain rate superplasticity was established for the systems of 3(Y 2O3, MgO) · 97(Zr0.95Ti 0.05)O2 and small amounts of Al2O3 and/or Mn3O4 added 3YTZ. Such excellent superplasticity is due to the homogeneous, fine grained microstructure and enhancement of cation lattice diffusion in 3YTZ by addition of TiO2, Al2O 3 and/or Mn3O4.
|ジャーナル||Key Engineering Materials|
|出版ステータス||Published - 2004 1月 1|
|イベント||Proceedings of the 8th Conference and Exhibition of the European Ceramic Society - Istanbul, Turkey|
継続期間: 2003 6月 29 → 2003 7月 3
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