Morphological analysis of pores in directionally freeze-cast titanium foams

Synchrotron x-ray tomography was performed on titanium foams with aligned, elongated pores, initially created by sintering directionally freeze-cast preforms using two different powder sizes. Three-dimensional reconstructions of the pore structures were analyzed morphologically using interface shape...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials research 2009-01, Vol.24 (1), p.117-124
Main Authors: Fife, J.L., Li, J.C., Dunand, D.C., Voorhees, P.W.
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Biomaterials
Cellular (material type)
Inorganic Chemistry
Materials Engineering
Materials Science
Nanotechnology
Powder metallurgy
X-ray tomography
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Synchrotron x-ray tomography was performed on titanium foams with aligned, elongated pores, initially created by sintering directionally freeze-cast preforms using two different powder sizes. Three-dimensional reconstructions of the pore structures were analyzed morphologically using interface shape and interface normal distributions. A smaller powder size leads to more completely sintered titanium walls separating the dendritic pores, which in turn created a more compact distribution of pore shapes as well as stronger pore directionality parallel to the ice growth direction. The distribution of pore shapes is comparable to trabecular bone reported in the literature, indicating the foam's potential as a bone replacement material.
ISSN:0884-2914
2044-5326
DOI:10.1557/JMR.2009.0023