Title of article :
Novel hydroxyapatite coating on new porous titanium and titanium-HDPE composite for hip implant
Author/Authors :
Xie، نويسنده , , Jianhui and Luan، نويسنده , , Ben Li and Wang، نويسنده , , Jianfeng and Liu، نويسنده , , Xing Yang and Rorabeck، نويسنده , , Cecil and Bourne، نويسنده , , Robert، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
9
From page :
2960
To page :
2968
Abstract :
Porous titanium (Ti) and Ti-high density polyethylene (Ti-HDPE) composite were investigated as new hip implant materials to increase the biomechanical compatibility by promoting a matching modulus of elasticity between hip stem and human bone. Surfaces of both materials were modified to increase its bioactivity and biocompatibility through electrochemical activation treatment and deposition of hydroxyapatite (HA) coating. The electrochemical activation treatment of both materials in 10 M NaOH solution created a bone-like porous nanostructure across the surfaces, thus enhancing the growth of natural bone. A top layer with nanometer-pores and TiO2 was formed during the activation process, creating a favorable and prerequisite condition conducive to the formation of hydroxyapatite coating. Furthermore, a layer of hydroxyapatite, a bioactive and biocompatible bioceramics that is the main component of natural bone, was deposited on the porous Ti and Ti-HDPE composite through a novel chemo-biomimetic method. The formed coating was characterized through TEM as a nanometer scale crystalline.
Keywords :
Titanium , electrochemical activation , Composite , Nanostructure , Hydroxyapatite
Journal title :
Surface and Coatings Technology
Serial Year :
2008
Journal title :
Surface and Coatings Technology
Record number :
1818666
Link To Document :
بازگشت