Paper Title:
Effect of the SBF Concentration on the Apatite-Forming Ability of ASTM F75 Alloy Induced by Wollastonite
  Abstract

A method to promote a bioactive surface on the cobalt base alloy ASTM F75 was tested. A set of cylindrical samples was obtained using the investment casting technique and one of the flat surfaces of each sample was polished. The samples were packed in wollastonite powder and then heat treated for 1 h at 1220°C. To characterize the in vitro bioactivity, a set of heat treated metallic specimens was immersed in a simulated body fluid with an ionic concentration nearly equal to that of human blood plasma (SBF) for 7, 10 and 21 days. To evaluate the effect of increasing the concentration of the simulated body fluid on the bioactivity of the material, a second set of heat treated samples was immersed in a more concentrated solution (1.5 SBF). In both cases the solution was renewed every 7 days. After heat treatment, fine agglomerates homogeneously distributed, containing O, Ca, Si and Al were observed on the metallic surface. After immersion of the samples in simulated body fluids, a ceramic layer containing Ca and P was formed on all the samples. A thicker layer, identified as apatite by XRD, was formed on the samples immersed for 21 days in SBF and as early as 7 days in 1.5 SBF. This may indicate that the heat treated material is useful for bone replacement and tissue regeneration under highly loaded conditions.

  Info
Periodical
Key Engineering Materials (Volumes 493-494)
Main Theme
Edited by
Eyup Sabri Kayali, Gultekin Goller and Ipek Akin
Pages
519-523
DOI
10.4028/www.scientific.net/KEM.493-494.519
Citation
J.C. Ortiz-Cuellar, D. A. Cortés-Hernández, J. C. Escobedo-Bocardo, C.R. Muñiz Valdez, J.S. Luna Alvarez, N. Rodríguez-Rosales, "Effect of the SBF Concentration on the Apatite-Forming Ability of ASTM F75 Alloy Induced by Wollastonite", Key Engineering Materials, Vols. 493-494, pp. 519-523, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: E.S. Thian, Jie Huang, Serena Best, Zoe H. Barber, William Bonfield
Abstract:0.8 wt.% silicon-containing hydroxyapatite (Si-HA) thin films of thickness 600 nm have been successfully developed using a magnetron...
445
Authors: Akemi A. Nogiwa-Valdez, Dora A. Cortés-Hernández, J.M. Almanza-Robles, Alejandra Chávez-Valdez
Abstract:Zirconia-alumina composites with additions of a CaO-SiO2 glass are prepared by uniaxial pressing and sintering. In order to promote...
193
Authors: El-Sayed Ghaith, Toshihiro Kasuga, Masayuki Nogami
Abstract:Amorphous calcium silicate coating on a metallic titanium substrate for hard tissue replacement was prepared by a sol-gel method. Calcium...
235
Authors: Hua Ke, Yu Zhou, De Chang Jia, Cong Qin Ning
Abstract:Hydroxyapatite (HA)/titanium (Ti) composites were successfully fabricated by hot isostatic pressing at 850°C. The microstructure of 7T2HB...
1715
Authors: Li Ping Wang, Bang Cheng Yang, Ji Yong Chen, Xing Dong Zhang
Abstract:The bioactivities of titanium oxide film on titanium surface received from different chemical treatment methods were studied in SBF in vitro...
545