Paper Title:

Biomimetic Coating on Pure Titanium Submitted to Different Surface Treatments

Periodical Materials Science Forum (Volumes 618 - 619)
Main Theme Light Metals Technology 2009
Edited by M.S. Dargusch & S.M. Keay
Pages 311-314
DOI 10.4028/www.scientific.net/MSF.618-619.311
Citation Xiao Jian Wang et al., 2009, Materials Science Forum, 618-619, 311
Online since April 2009
Authors Xiao Jian Wang, Yun Cang Li, Peter D. Hodgson, Cui E Wen
Keywords Coating, Heat Treatment, Pure Titanium, Surface Treatment
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Titanium (Ti) plates were firstly treated to form various types of oxide layers on the surface and then immersed into simulated body fluid (SBF) to evaluate the apatite forming ability. The surface morphology and roughness of the different oxide layers were measured by atomic force microscopy (AFM), and the surface energies were determined based on the Owens-Wendt (OW) methods. It was found that Ti samples after Alkali-Heat treatment (AH) achieved the best apatite formation after soaking in SBF for 3 weeks, compared to those without treatment, thermal or H2O2 oxidation. Furthermore, contact angle measurement revealed that the oxide layer on the alkali-heat treated Ti samples possessed the highest surface energy. The results indicate that the apatite inducing ability of a titanium oxide layer is linked to its surface energy. Apatite nucleation is easier on a surface with a higher surface energy.

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