Low Elastic Modulus β Ti-Nb-Si Alloys for Biomedical Applications

Won Yong Kim; Han Sol Kim; In Dong Yeo

doi:10.4028/www.scientific.net/MSF.510-511.858

Paper Titles

The Characteristic of the La₃Ga₅SiO₁₄ Single Crystal Grown by Vertical Bridgman Method in Ar Atmosphere
p.842

Preparation and Characterization of a New Type of Sr-Contained Hydroxyapatite Bone Cement
p.846

High Grade Purification of Sericite by Hydrocyclone and Magnetic Separation
p.850

Fabrication and Properties of High Strength Al-8Fe-2Mo-2V-1Zr Alloy Produced by Melt Spinning Techniques
p.854

Low Elastic Modulus β Ti-Nb-Si Alloys for Biomedical Applications
p.858

Surface Modification of Glass Plate to Enhance Thickness of Silica Aerogel
p.862

Synthesis of AlON Refractory Raw Materials from Aluminum Dross Using Thermite Reaction Process
p.866

Thermopneumatic-Actuated Polydimethylsiloxane (PDMS) Microfluidic System
p.870

Process Development for Cost-Effective Ag-Ni Contact Materials by Simple Solidification Control
p.874

HomeMaterials Science ForumMaterials Science Forum Vols. 510-511Low Elastic Modulus β Ti-Nb-Si Alloys for...

Low Elastic Modulus β Ti-Nb-Si Alloys for Biomedical Applications

Abstract:

We report on advanced β-titanium alloys having excellent biocompatibility without containing V or Al that has been known as a toxic element for human body, and on a low elastic modulus to be used in the fields of artificial joint and dental implant in the replacement of natural human bone. Martensite structure with α’ (hcp) or α”(orthorhombic) was observed in Ti-xNb-1.5at.%Si, where x=10-20at.%. The crystal structure of martensite formed from water quenching process was largely dependent upon Nb content but does not on Si content. On the basis of experimental results obtained, it is suggested that Si has an effective role to suppress the precipitation of ω phase leading to reduction in elastic modulus in the metastable β phase region. Metastable β phase region was superior to reduce the elastic modulus than stable β phase region in the present alloy system. The minimum value of elastic modulus was measured to 48GPa.