Hydrothermal
surface modification of titanium in Ca(OH)2
solution.
Kenichi HAMADA, Emi FUJIHARA, Kenzo
ASAOKA
Department of
Biomaterials and Bioengineering, Institute of Health Bioscience,
The University of
Effects of hydrothermal
treatment (HT) in Ca(OH)2 solution on hydroxyapatite
(HAp) precipitation of titanium in simulated body
fluid (SBF) was investigated. HT was performed in saturated Ca(OH)2 solution at 120, 200 and 280ºC
for 1 hour. The titanium disks were immersed
at 37ºC for 4 weeks in Hanks’ solution as a SBF. The mass
changes before and after immersion were determined as HAp
precipitation. HT increased the HAp precipitation; especially high temperature
HT increased it significantly. The increment was mainly caused by the creation
of CaTiO3 on titanium surface and growth of titanium oxide surface
layer.