Development of porous/dense implant using titanium powder injection overmolding on Ti-foam inserts

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TypeArticle
Proceedings titleAdvances in Powder Metallurgy and Particulate Materials - 2011, Proceedings of the 2011 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2011
Conference2011 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2011, 18 May 2011 through 21 May 2011, San Francisco, CA
ISBN9780981949659
Pages41344144; # of pages: 11
SubjectBone-implant interfaces; New production; Orthopaedic implants; Osteointegration; Porous coatings; Porous titanium; Sound interface; Titanium powders; Feedstocks; MIM devices; Porosity; Powder metallurgy; Sintering; Titanium
AbstractPorous surfaces have been used for many years to enhance osteointegration and bone-implant interface of various orthopaedic implants. Different techniques have been developed to apply porous coating on dense implants. This paper presents an alternative method to depose dense titanium on porous titanium. Titanium foam inserts were produced using a powder metallurgy approach. These inserts were then inserted in a mold having the geometry of the final component and a titanium MIM feedstock was injected over the inserts. The composite green parts were then treated following a standard MIM procedure. Two levels of porosity and titanium grades were studied. During molding, the MIM feedstock partially infiltrates the porosity of the foam. After sintering, a sound interface between the foam and dense titanium is obtained. This new production approach may enable the design of complex orthopaedic implants with foams integrated at various locations.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute (IMI-IMI)
Peer reviewedYes
NPARC number21271329
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Record identifierbc00162d-0613-4e8e-b78c-125b70cced25
Record created2014-03-24
Record modified2016-05-09
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