Journal
MATERIALS LETTERS
Volume 141, Issue -, Pages 194-197Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.11.083
Keywords
Porous materials; Titanium; Space holder; Metal injection moulding; Plasma treatment
Funding
- Brazilian research funding agency CAPES
- German Academic Exchange Service DAAD
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For titanium implants, a final porosity in the range of 60-65 vol% is required to achieve a network of interconnected macropores, which enables adequate fixation of the implant to the bone tissue and suitable mechanical properties. In addition, an open porosity at the implant surface is crucial for the success of the implant. In the present study, highly porous titanium foams were produced by warm compaction of MIM feedstock with the addition of space holder in a heatable die. Plasma treatment was performed on the Ti foams before the final sintering step aiming to increase the open pores at the surface. The results obtained so far demonstrate that plasma treatment is a promising technique for increasing open porosity at the surface. It even improved the dimensional accuracy of highly porous samples. (C) 2014 Elsevier B.V. All rights reserved.
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