Authors: Fatehi, K.¹; Moztarzadeh, F.¹; Solati-Hashjin, M.¹; Tahriri, M.²; Rezvannia, M.¹; Saboori, A.¹

Source: Surface Engineering, Volume 25, Number 8, November 2009 , pp. 583-588(6)

Publisher: Maney Publishing

Abstract:

In the present work, time of calcium phosphate formation on Ti6Al4V alloy with or without alkali and heat treatments was investigated. Specimens were soaked in 0, 5 and 10M solutions of NaOH at temperatures of 60 and 80°C for 1 and 3 days and then their surfaces were characterised by using scanning electron microscopy and thin film X-ray diffraction. It was found that optimum condition is 3 days soaking in 5M NaOH in 80°C. Specimens treated under these optimum conditions were subsequently heat treated at 500, 600 and 700°C for 1 h to consolidate the sodium titanate hydrogel layer. With heat treatment at 600°C for 1 h and then soaking in simulated body fluid, apatite formed within 3 days. However, there were no signs of apatite formation in control samples (without alkali and heat treatment) up to 7 days soaking in SBF.

Keywords: SBF; ALKALI AND HEAT TREATMENT; HYDROXYAPATITE; BIOMIMETIC COATINGS; TI6AL4V

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174329408X326470

Affiliations: 1: Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, PO Box 15875-4413, Tehran, Iran 2: Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, PO Box 15875-4413, Tehran, Iran;, Email: m-tahriri@aut.ac.ir

Publication date: 2009-11-01

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