Effect of bulk microstructure of commercially pure titanium on surface characteristics and fatigue properties after surface modification by sand blasting and acid-etching

Medvedev, A E, Ng, H P, Lapovok, R, Estrin, Y, Lowe, T C and Anumalasetty, V N 2016, Effect of bulk microstructure of commercially pure titanium on surface characteristics and fatigue properties after surface modification by sand blasting and acid-etching, Journal of the mechanical behavior of biomedical materials, vol. 57, pp. 55-68, doi: 10.1016/j.jmbbm.2015.11.035.

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Title Effect of bulk microstructure of commercially pure titanium on surface characteristics and fatigue properties after surface modification by sand blasting and acid-etching
Author(s) Medvedev, A E
Ng, H P
Lapovok, RORCID iD for Lapovok, R orcid.org/0000-0002-1395-9814
Estrin, Y
Lowe, T C
Anumalasetty, V N
Journal name Journal of the mechanical behavior of biomedical materials
Volume number 57
Start page 55
End page 68
Total pages 14
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-04
ISSN 1878-0180
Keyword(s) Titanium
Surface modification
Fatigue
Nanocrystalline materials
Equal channel angular pressing
Summary Surface modification techniques are widely used to enhance the biological response to the implant materials. These techniques generally create a roughened surface, effectively increasing the surface area thus promoting cell adhesion. However, a negative side effect is a higher susceptibility of a roughened surface to failure due to the presence of multiple stress concentrators. The purpose of the study reported here was to examine the effects of surface modification by sand blasting and acid-etching (SLA) on the microstructure and fatigue performance of coarse-grained and ultrafine-grained (UFG) commercially pure titanium. Finer grain sizes, produced by equal channel angular pressing, resulted in lower values of surface roughness in SLA-processed material. This effect was associated with greater resistance of the UFG structure to plastic deformation. The fatigue properties of UFG Ti were found to be superior to those of coarse-grained Ti and conventional Ti-6Al-4V, both before and after SLA-treatment.
Language eng
DOI 10.1016/j.jmbbm.2015.11.035
Field of Research 0903 Biomedical Engineering
0912 Materials Engineering
0913 Mechanical Engineering
091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30081804

Document type: Journal Article
Collection: Institute for Frontier Materials
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