Effect of porosity on the properties of open cell titanium foams intended for orthopedic applications

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DOIResolve DOI: http://doi.org/10.1063/1.3453827
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Proceedings titlePorous Media and its Applications in Science, Engineering and Industry: 3rd International Conference
Series titleAIP Conference Proceedings; no. 1254
ConferenceThird International Conference on Porous Media and its Applications in Science, Engineering and Industry, June 20-25, 2010, Montecatini, Italy
Pages293298; # of pages: 6
AbstractPorous metals have been used in various orthopedic applications as coating to promote implant fixation or as scaffolds for bone reconstruction. Since these materials were up to recently only used as thin coating (i.e. sintered beads or mesh) and not available into shapes adequate for detailed characterization, the effect of the structure on the static and dynamic properties of these materials has not been widely reported in the literature. This paper presents the effect of the porosity (49.3–66.7%) on the static and dynamic properties of titanium foams produced with a powder metallurgy process. All materials exhibited compression curves with three stages, typical of ductile porous materials. When the porosity level increases, the materials become more brittle. The compression yield strength increases while the modulus is more or less unaffected when the porosity increases from 49.3 to 66.7% and does not follow the power law model accepted for porous medium. The shear strength/adhesion with dense substrates increases with density and is proportional to the compression yield strength. The fatigue limit is not directly link with the porosity. The discrepancies observed are attributed to differences in the structure as the porosity increases.
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AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NRC number52473
NPARC number16891226
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Record identifier596af3ab-67dc-4fd5-986f-b62136e78d22
Record created2011-02-20
Record modified2016-05-09
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