Abstract
In order to deform titanium plates superplastically, a SiO2-CaO mold has been developed. SiO2-CaO particles were observed on the surface of plates pressed by this mold. The particles were transferred from the mold surface. For the examination of hydroxyapatite deposition ability, the titanium plates were immersed in simulated body fluid which had ion concentrations almost equal to those of human blood plasma. At the same time, titanium plates treated or untreated by NaOH were immersed in the simulated body fluid. After 1-4 weeks, hydroxyapatite layer deposited on the samples. Compared with untreated titanium plates, hydroxyapatite easily to deposited on titanium plates with SiO2-CaO particles.
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