This object has not yet been indexed by the background indexing service.

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/88805

Title

Nanohydroxyapatite coating on a titanium-niobium alloy by a hydrothermal process

Author(s)

Xiong, Jianyu;  Li, Yuncang;  Hodgson, Peter D.;  Wen, Cui'e

Abstract

A novel one-step hydrothermal coating process was used to produce nanohydroxyapatite (nano-HA) coating on a titanium–niobium (TiNb) alloy substrate in a newly designed solution containing calcium and phosphate ions. The morphology of the coating was studied using scanning electron microscopy. The phase identification of the coating was carried out using X-ray diffraction, attenuated total reflectance Fourier transform infrared spectroscopy and transmission electron microscopy. The reaction between the surface of TiNb alloy and the solution during the hydrothermal process was studied by X-ray photoelectron spectroscopy. Results show that the coating formed on the surface of TiNb alloy was composed of nano-HA particles. During the hydrothermal process, TiO2 and Nb2O5 formed on the TiNb alloy surface and hydrated to Ti(OH)4 and Nb(OH)5, respectively. Calcium phosphate nucleated and grew into a layer of nano-HA particles on the surface of TiNb alloy under the hydrothermal conditions. The crystallinity of the nano-HA coating was improved with the increase in hydrothermal treatment temperature and time duration. Nano-HA coating with good crystallinity was produced on the TiNb alloy via the hydrothermal process at a temperature of 200 °C for 12 h.

Publication type

Journal article

Source

Acta Biomaterialia, Vol. 6, no. 4 (Apr 2010), pp. 1584-1590

Publication year

2010

Publisher

Elsevier

Language

English

Publisher URL

http://dx.doi.org/10.1016/j.actbio.2009.10.016

Copyright

Crown Copyright © 2009 Published by Elsevier Ltd. on behalf of Acta Materialia Inc. All rights reserved.