The growth of hydroxyapatite on alkaline treated Ti-6Al-4V soaking in higher temperature with concentrated Ca2+/HPO42- simulated body fluid
Journal
Materials Chemistry and Physics
Journal Volume
87
Journal Issue
1
Pages
24-30
Date Issued
2004
Author(s)
Abstract
In this study, calcium and phosphorous ions in the simulated body fluid (SBF) was be increased to increase the rate of precipitation of hydroxyapatite (HA). The soaking temperature in concentrated calcium and phosphorous ion-SBF (CP-SBF) was increased to reduce the nucleation energy of the HA, which lead to an early precipitation to shorten the treatment process. When the metallic substrates treated with 10M NaOH aqueous solution and subsequently heated at 600°C, a thin sodium titanium oxide layer was formed on the surfaces as the linking layer for HA and Ti-6Al-4V alloys. After Ti-6Al-4V alloys treated with alkali solution, it would soak into a simulated body fluid with higher concentration of calcium and phosphorous ions (CP-SBF) to increase the possibility of nucleation of HA. When Ti-6Al-4V alloys treated with alkali solution, subsequently heated at 600°C, and then soaked into CP-SBF at a temperature of 80°C, it could form a dense and thick (50μm) bone-like hydroxyapatite layer on the surface. The HA layer was appeared on the surface of the Ti-alloy at the first week soaking, which was greatly shorten the coating process. In the research, the characteristics of the coating layer will be analyzed by the results of X-ray diffractometer (XRD), scanning electron microscope (SEM), and Fourier transformation infrared (FT-IR). © 2004 Published by Elsevier B.V.
SDGs
Type
journal article