Abstract
Advanced metallic bone implants are designed to have a porous surface to improve osseointegration and reduce risks of loosening. An alternative approach to existing surface treatments to create a porous surface is to bond separately produced metallic foams onto the implant. To assess the feasibility of this approach, a Ti-6Al-4V foam was diffusion bonded onto bulk Ti-6Al-4V in an argon atmosphere at temperatures between 1173 K and 1223 K (900 °C and 950 °C) for times between 45 and 75 minutes. These specimens were tested in tension to determine bond quality: failures occurred in the foam, indicating a strong diffusion-bonded interface. The quality of the bond was confirmed by metallographic studies, indicating that this approach, which can also be applied to creating of sandwich with porous cores, is successful.
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This paper is based on a thesis submitted by B. Hamilton to the Graduate Office of Rensselaer Polytechnic Institute in partial fulfillment of the requirements for the degree of Master of Science in Materials Science and Engineering.
Manuscript submitted August 2, 2012.
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Hamilton, B., Oppenheimer, S., Dunand, D.C. et al. Diffusion Bonding of Ti-6Al-4V Sheet with Ti-6Al-4V Foam for Biomedical Implant Applications. Metall Mater Trans B 44, 1554–1559 (2013). https://doi.org/10.1007/s11663-013-9942-5
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DOI: https://doi.org/10.1007/s11663-013-9942-5