Effects of Alkali and Heat Treatment on Apatite Forming Ability of a Micro-Arc Oxidized Ti6Al4V Alloy

Abstract:

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To further improve the bioactivity of Ti6Al4V alloy and to accelerate bone growth, the porous TiO2 coating containing calcium and phosphate prepared on Ti6Al4V alloy substrate using micro-arc oxidation (MAO) technique was treated in 5M NaOH aqueous solution at 60 °C for 24 h and followed by a heat treatment at 400 °C for 1 hour (termed as MAONH). The experimental results showed that Ca2+ and P5+ easily precipitated on the MAONH coating and formed a thicker apatite film. The reason could be ascribed to hydrolysis of CaTiO3, which resulted in appearance of large numbers of Ca2+ and OH- ions within coating.

Info:

Periodical:

Materials Science Forum (Volumes 610-613)

Main Theme:

Edited by:

Zhong Wei Gu, Yafang Han, Fu Sheng Pan, Xitao Wang, Duan Weng and Shaoxiong Zhou

Pages:

1290-1293

DOI:

10.4028/www.scientific.net/MSF.610-613.1290

Citation:

M. R. Wang et al., "Effects of Alkali and Heat Treatment on Apatite Forming Ability of a Micro-Arc Oxidized Ti6Al4V Alloy", Materials Science Forum, Vols. 610-613, pp. 1290-1293, 2009

Online since:

January 2009

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$35.00

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