In vitro biomimetic deposition of apatite on alkaline and heat treated Ti6Al4V alloy surface

Bulletin of materials science

F Moztarzadeh¹  M Solati-Hashjin¹  R Ravarian¹  K Fatehi¹  M Tahriri¹  M Rezvannia¹ 

[1] Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran$$Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, IranBiomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran$$

关键词: Ti6Al4V;    apatite;    biomimetic deposition;    alkaline;    heat treatment;    SBF.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Titanium alloy (Ti6Al4V) substrates, having the ability of biomimetic calcium phosphate-based materials, especially hydroxyapatite deposition in a simulated body fluid (SBF) means of chemical treatment (alkaline treatment) and subsequent heat treatment, was studied. The effects of alkaline treatment time, concentration and heat treatment temperature on the formation of calcium phosphate (carbonate�?�hydroxyapatite) on Ti6Al4V surface were examined. For this purpose, the metallic substrates were treated in 0, 5 and 10 M NaOH solutions at a temperature of 60 or 80°C for 1 and 3 days. Subsequently the substrate was heat-treated at 500, 600 and 700°C for 1 h for consolidation of the sodium titanate hydrogel layer. Finally, they were soaked in SBF for 1 and 3 days. The substrate surfaces were characterized by the techniques commonly used for bulk material such as scanning electron microscopy (SEM) and thin film X-ray diffraction (TF�?�XRD). With regard to the SEM and TF�?�XRD results, the optimum process consists of 3 days soaking in 5 M NaOH in 80°C and subsequent heat treatment at 600°C for 1h. It is worth mentioning that the results showed that the apatite formed within 3 days on the specimen surfaces, however, there was no sign of apatite formation in the control samples (without alkaline and heat treatment) which was treated for up to 3 days immersion in SBF.

【 授权许可】

Unknown