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Mechanical properties and bioactive surface modification via alkali-heat treatment of a porous ti-18Nb-4Sn alloy for biomedical applications

Xiong, Jianyu, Li, Yuncang, Wang, Xiaojian, Hodgson, Peter and Wen, Cui`e 2008, Mechanical properties and bioactive surface modification via alkali-heat treatment of a porous ti-18Nb-4Sn alloy for biomedical applications, Acta biomaterialia, vol. 4, no. 6, pp. 1963-1968, doi: 10.1016/j.actbio.2008.04.022.

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Title Mechanical properties and bioactive surface modification via alkali-heat treatment of a porous ti-18Nb-4Sn alloy for biomedical applications
Author(s) Xiong, Jianyu
Li, Yuncang
Wang, Xiaojian
Hodgson, Peter
Wen, Cui`e
Journal name Acta biomaterialia
Volume number 4
Issue number 6
Start page 1963
End page 1968
Total pages 6
Publisher Elsevier B.V.
Place of publication Amsterdam, The Netherlands
Publication date 2008-11
ISSN 1742-7061
1878-7568
Keyword(s) titanium–niobium–tin alloy
powder metallurgy
mechanical properties
alkali-heat treatment
bioactivity
Summary A porous Ti–18 at.%Nb–4 at.%Sn (hereafter, Ti–18Nb–4Sn) alloy was prepared by powder metallurgy. The porous structures were examined by scanning electron microscopy and the phase constituents were analysed by X-ray diffraction. Mechanical properties of the porous alloy were investigated using a compressive test. To enhance the bioactivity of the alloy surface, alkali-heat treatment was used to modify the surface. The bioactivity of the pre-treated alloy sample was investigated using a biomimetic process by soaking the sample into simulated body fluid (SBF). Results indicate that the elastic modulus and plateau stress of the porous Ti–18Nb–4Sn alloy decrease with decreasing relative density. The mechanical properties of the porous alloy can be tailored to match those of human bone. After soaking in SBF for 7 days, a hydroxyapatite layer formed on the surface of the pre-treated porous Ti–18Nb–4Sn alloy. The pre-treated porous Ti–18Nb–4Sn alloy therefore has the potential to be a bioactive implant material.
Notes This research was presented at the Materials Today Asia 2007 Conference.
Language eng
DOI 10.1016/j.actbio.2008.04.022
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2008, Elservier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30017300

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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