擬似体液中におけるジルコニアゲル上でのアパタイト形成の構造依存性

概要

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The apatite-forming ability of zirconia gels with different structures was investigated in a simulated body fluid (SBF) with ion concentrations nearly equal to those of human blood plasma. Zirconia gels with amorphous, tetragonal, or monoclinic structure were prepared by a sol-gel process and subsequent heat treatment at various temperatures. Zirconia gel with an amorphous structure formed only a small amount of apatite on its surface, even after 14 d of immersion in SBF, whereas gels with tetragonal or monoclinic structures formed quite a large amount of apatite on their surfaces after 3 d of immersion, and their surfaces were fully covered with apatite within 14 d of immersion. This result indicates that specific arrangements of Zr-OH groups in tetragonal or monoclinic zirconia are effective in inducing apatite nucleation.
社団法人日本セラミックス協会の論文
2002-08-01