Rheological Behavior of Hydroxyapatite and PSZ Mixed Slurries.

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  • Yamada Yoko
    Department of Materials Processing, Graduate School of Engineering, Tohoku University
  • Iijima Hiroyasu
    Department of Materials Processing, Graduate School of Engineering, Tohoku University
  • Watanabe Ryuzo
    Department of Materials Processing, Graduate School of Engineering, Tohoku University

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  • 傾斜機能材料　　ハイドロキシアパタイト／ジルコニア系混合スラリーのレオロジー
  • ハイドロキシアパタイト ジルコニアケイ コンゴウ スラリー ノ レオロジー

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Abstract

The rheological behavior of hydroxyapatite and partially stabilized zirconia mixed slurries is investigated in order to study the production of hydroxyapatite / zirconia functionally graded materials by slurry dipping method. The purpose of this material is to use as a dental implant material. The rheological behavior of hydroxyapatite and zirconia, which strongly contributes to the resultant thickness of FGM layer, is different between hydroxyapatite (Newtonian fluid) and zirconia (non-Bingham plastic fluid). The mixed slurries.of hydroxyapatite and zirconia slurries show the strong contribution of zirconia when the shear rate is low, but the rheology of hydroxyapatite is dominated when the shear stress is high. On the other hand, the optimum dispersant concentration changes linearly with change in the composition of hydroxyapatite and zirconia.

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