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A Preliminary Study on Cell Wall Architecture of Titanium Foams

Published online by Cambridge University Press:  31 January 2011

Nihan Tuncer ,
Luc Salvo ,
Eric Maire  and
Gürsoy Arslan
Nihan Tuncer
Affiliation:
[email protected]@gmail.com, Anadolu University, Material Science and Engineering, Eskisehir, Turkey
Luc Salvo
Affiliation:
[email protected], INP Grenoble, SIMAP Lab., Grenoble, France
Eric Maire
Affiliation:
[email protected], INSA Lyon, MATEIS Lab, Lyon, France
Gürsoy Arslan
Affiliation:
[email protected], Anadolu University, Material Science and Engineering, Eskisehir, Turkey
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Abstract

Bio-inspired architectures, especially metallic foams, have been receiving an increasing interest for the last 10 years due to their unusual mechanical properties. Among commonly dealt foamed metals, like aluminum and steel, titanium possesses a distinctive place because of its high strength-to-weight ratio, excellent corrosion resistance and biocompatibility. In this study, Ti foams were produced by a very simple and common method, sintering under inert atmosphere with fugitive space holder. Removal of the space holder was conducted by dissolution in hot deionized water which makes it possible to minimize contamination of Ti. Sintering of remaining Ti skeleton at 1300 °C offered a wide range of properties and cost savings. The effects of the processing parameters such as sintering temperature and powder characteristics on the 3D foam architecture were investigated by using X-ray microtomography (μ-CT). Use of bimodal Ti powders caused a decrease in final theoretical density when compared to the ones prepared with the same amount of space holder but with monomodal Ti powders. It was also observed that the use of bimodal Ti powders decreased compressive strength, by introducing pores into the cell walls, when compared to the ones having the same theoretical density.

Keywords

Tix-ray tomographycellular (material form)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1188: Symposium LL – Architectured Multifunctional Materials , 2009 , 1188-LL02-04
Copyright
Copyright © Materials Research Society 2009

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