Subject: Seminar Notice-C. Ye, Monday, 4/30/12, 3:30 PM, Rm. 1028
From: "Stacey, Lisa A" <[email-masked]>
To: "[email-masked]'" <[email-masked]>, "[email-masked]'" <[email-masked]>, "[email-masked]'" <[email-masked]>
Date: Wed, 25 Apr 2012 16:03:49 -0400

MATERIALS SCIENCE AND ENGINEERING
SEMINAR

Fabrication of Porous Titanium Scaffolds in Biomedical Applications as
a Load-bearing Implant Material

by

Congwang Ye
Ph.D. Prelim 1 Exam
Advisors:  Prof. B. Pipes and Prof. C. Martinez

ABSTRACT

Ti foam is one of the best material candidates for bone implants, especially load-bearing bone implants and has been studied extensively. In an effort of combining its excellent biocompatibility, corrosion resistance, high strength to weight ratio and excellent mechanical properties, different techniques to generate various forms of Ti foams has been developed. Current techniques do not provide good interconnected porosity, which is essential for bone ingrowth, or good mechanical properties as a load-bearing bone implant. Studies on porous scaffolds indicate that uniformity of porosity in the foam material will greatly improve the mechanical properties. In this talk I will provide an overview of the key techniques that have been developed to fabricate porous Ti foams. I will also propose a new technique to generate porous Ti foams using monodisperse glass particles as pore generators, that aims to find a balance between mechanical strength and biocompatibility. The fabrication uses the space-holder technique of sintering a mixture of Titanium powder and glass particles. The mixture will be sintered into a Titanium/glass composite at temperature of 1,000 °C. Then the glass particles will be removed via dissolution in sodium hydroxide, leaving behind a Titanium foam. Characterization experiments and possible issues will be also discussed.

Date:   Monday, April 30, 2012

Time:        3:30 P.M.
Place:   ARMS 1028

PURDUE MSE

Lisa Stacey
Secretary/Development Assistant
Purdue University
School of Materials Engineering
765/494-4100