Paper Title:
Formability of Hydroxyapatite on Beta-Type Ti-Nb-Ta-Zr Alloy for Biomedical Applications through Alkaline Treatment Process
  Abstract

Titanium and its alloys have been widely used as biomaterials for hard tissue replacements because of their excellent mechanical properties and biocompatibility. However, the bonding between their surfaces and bone is not enough after implantation. The bioactive surface modification such as a hydroxyapatite (HAp) coating on their surfaces has been investigated. Recently, a simple method for forming HAp layer on the surfaces of titanium and its alloys has been developed. This method is called as alkaline treatment process. In this method, HAp deposits on the surfaces of titanium and its alloys by dipping into simulated body fluid (SBF) after an alkaline solution treatment that is followed by a baking treatment (alkaline treatment). This process is applicable to newly developed beta-type Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) for biomedical applications achieving bioactive HAp modification. In this study, the morphology of the HAp layer formed on the surface of TNTZ was investigated after various alkaline treatments followed by dipping in SBF. The formability of HAp on the surface of TNTZ was then discussed. The formability of HAp on TNTZ is much lower than that of commercially pure Ti, Ti-6Al-4V ELI and Ti-15Mo-5Zr-3Al alloys, which are representative metallic biomaterials. The formability of HAp on TNTZ is improved by increasing the amount of Na in the sodium titanate gels formed during an alkaline solution treatment where the NaOH concentrations and the dipping time are over 5 M and 172.8 ks, respectively. The formability of HAp on TNTZ is considerably improved by dipping in a 5 M NaOH solution for 172.8 ks. This condition for alkaline solution treatment process is the most suitable for TNTZ.

  Info
Periodical
Edited by
Katsutoshi Komeya, Yohtaro Matsuo and Takashi Goto
Pages
297-300
DOI
10.4028/www.scientific.net/KEM.352.297
Citation
T. Akahori , M. Niinomi, M. Nakai, "Formability of Hydroxyapatite on Beta-Type Ti-Nb-Ta-Zr Alloy for Biomedical Applications through Alkaline Treatment Process", Key Engineering Materials, Vol. 352, pp. 297-300, 2007
Online since
August 2007
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: Yasunori Harada, Toshiyuki Araki, Takahiro Tsuda
Abstract:The pure titanium long-cups were formed by preventing the seizing in cold multi-stage deep drawing processes. For the prevention, pure...
1307
Authors: Joon Sik Park, Jeong Min Kim, Young Ho Song, Byung Hwan-Hong, Ye Won Cho, Sang Wook Joo, Joong Seok-Oh
Chapter 6: New Materials and Composites Materials
Abstract:The nature of high specific strength compared with other structural materials has led to wide application of Mg alloys. However, Mg alloys...
727
Authors: Ming He Chen, Y.Y. Cao, W. Chen, Guo Liang Chen
Chapter 1: Advance in Composite Material
Abstract:In order to improve formability of high strength Al-alloy sheet metal, in this paper, it come up with the synchronized cooling hot forming...
81
Authors: Anoop Kumar, Balasunder, T. Raghu, S. Rajesham
Chapter 8: Mechanical Processing
Abstract:High specific strength metals with high formability are paramount requirement for maximizing productivity of structural components, aircraft...
381