Synthesis of bioactive ceramic on the titanium substrate by micro-arc oxidation

Bioactive ceramic films on titanium substrate are prepared successfully by micro‐arc oxidation in electrolyte solution containing NaOH only. The coatings are prepared by micro‐arc oxidation at various applied current densities (200–400 mA/cm2) and in NaOH electrolyte with different concentrations. T...

Full description

Saved in:
Bibliographic Details
Published in:Journal of biomedical materials research. Part A 2009-08, Vol.90A (2), p.438-445
Main Authors: Zhao, Zhongwei, Chen, Xingyu, Chen, Ailiang, Shen, Meiling, Wen, Shimei
Format: Article
Language:English
Subjects:
anatase
Apatites - chemistry
Biocompatible Materials - chemistry
Body Fluids - metabolism
Ceramics - chemistry
Electrochemistry - methods
Electrolytes
Electrons
Humans
micro-arc oxidation
Models, Chemical
Oxides - chemistry
Oxygen - chemistry
phases
rutile
Surface Properties
Titanium - chemistry
X-Ray Diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Bioactive ceramic films on titanium substrate are prepared successfully by micro‐arc oxidation in electrolyte solution containing NaOH only. The coatings are prepared by micro‐arc oxidation at various applied current densities (200–400 mA/cm2) and in NaOH electrolyte with different concentrations. The XRD shows that they are composed of rutile, anatase, Na2Ti6O13, and Na2Ti4O9 phases. The composition and surface morphologies are strongly dependent on the applied current density and electrolyte concentration. For example, at high current density, the phase is mainly composed of rutile and Na2Ti6O13, and at high electrolyte concentration, it is Na2Ti6O13 phase. The morphologies of the samples vary with the increase of current and electrolyte concentration. The apatite‐inducing ability of bioactive ceramic films is evaluated in biological model fluids. After soaking in biological model fluids, the titania‐based coatings containing Na2Ti6O13 phase have excellent capability of inducing bone‐like apatite. © 2008 Wiley Periodicals, Inc. J Biomed Mater Res, 2009
ISSN:1549-3296
1552-4965
DOI:10.1002/jbm.a.31902