Journal
SURFACE & COATINGS TECHNOLOGY
Volume 202, Issue 11, Pages 2482-2487Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2007.09.031
Keywords
electrophoretic deposition; coating; hydroxyapatite; titanium dioxide; adhesion strength; decomposition
Ask authors/readers for more resources
Nanosized hydroxyapatite (HA) powders were prepared by a chemical precipitation method and electrophoretically deposited on Ti6A14V substrates. The powders were calcined before the deposition process in order to obtain crack-free coating surfaces. As an inner layer between Ti6A14V substrate and HA coating, nanosized titanium dioxide (TiO2) powders were deposited, using different coating voltages, in order to connect substrate and HA tightly. Moreover, this layer is considered to be acting as a diffusion barrier, reducing the HA decomposition due to ion migration from the metal substrate into the HA. After the sintering stage, adhesion strengths of coatings were measured by shear testing, phase changes were studied by X-ray diffraction, and coating morphology was analyzed through scanning electron microscopy observations. Results showed that usage of the TiO2 inner layer prevented HA decomposition. Furthermore, decreasing the voltage used in TiO2 deposition resulted in crack-free surfaces and increased adhesion strength of the overall coating. (C) 2007 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available