171. MICRO-CHANNEL HYDROXYAPATITE COMPONENTS BY SEQUENTIAL FREEZE DRYING AND FREE PRESSURELESS SPARK-PLASMA SINTERING

Department: Mechanical & Aerospace Engineering
Research Institute Affiliation: Graduate Program in Materials Science and Engineering
Faculty Advisor(s): Marc A. Meyers | Eugene Olevsky

Primary Student
Name: Yen-Shan Lin
Email: y1lin@ucsd.edu
Phone: 619-594-4627
Grad Year: 2012

Abstract
Hydroxyapatite which has similar chemical composition to human bone and teeth has been widely used for biomedical applications due to their biocompatibility. For bone regeneration application, porous hydroxyapatite bulk materials are needed for the tissue in-growth. Freeze-drying process is a novel and cheap route to create aligned porous structure in the materials for biomedical application. Free pressureless spark plasma sintering is a emerging powder consolidation technique which is modified from spark plasma sintering without pressure assist. Novel freeze-drying - free pressureless spark plasma sintering processing sequence is developed to fabricate aligned porous structure hydroxyapatite materials. Microstructure investigation and mechanical tests were conducted.

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