Manufacturing of graded titanium scaffolds using a novel space holder technique

Yunhui Chen; Damon Kent; Michael Bermingham; Ali Dehghan-Manshadi; Gui Wang; Cuie Wen; Matthew S Dargusch

doi:10.1016/j.bioactmat.2017.07.001

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Manufacturing of graded titanium scaffolds using a novel space holder technique

Journal article

Open access

Peer reviewed

Manufacturing of graded titanium scaffolds using a novel space holder technique

Yunhui Chen, Damon Kent, Michael Bermingham, Ali Dehghan-Manshadi, Gui Wang, Cuie Wen and Matthew S Dargusch

Bioactive Materials, Vol.2(4), pp.248-252

2017

DOI: https://doi.org/10.1016/j.bioactmat.2017.07.001

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Abstract

porous scaffolds

titanium

powder metallurgy

space holder

graded porosity

To optimize both the mechanical and biological properties of titanium for biomedical implants, a highly flexible powder metallurgy approach is proposed to generate porous scaffolds with graded porosities and pore sizes. Sugar pellets acting as space holders were compacted with titanium powder and then removed by dissolution in water before sintering. The morphology, pore structure, porosity and pore interconnectivity were observed by optical microscopy and SEM. The results show that the porous titanium has porosity levels and pore size gradients consistent with their design with gradual and smooth transitions at the interfaces between regions of differing porosities and/or pore sizes. Meanwhile, the porous titanium has high interconnectivity between pores and highly spherical pore shapes. In this article we show that this powder metallurgy processing technique, employing the novel sugar pellets as space-holders, can generate porous titanium foams with well-controlled graded porosities and pore sizes. This method has excellent potential for producing porous titanium structures for hard tissue engineering applications.

Details

Title: Manufacturing of graded titanium scaffolds using a novel space holder technique
Authors: Yunhui Chen (Author) - University of Queensland
Damon Kent (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Michael Bermingham (Author) - University of Queensland
Ali Dehghan-Manshadi (Author) - University of Queensland
Gui Wang (Author) - University of Queensland
Cuie Wen (Author) - RMIT University
Matthew S Dargusch (Author) - The University of Queensland
Publication details: Bioactive Materials, Vol.2(4), pp.248-252
Publisher: Ke Ai Publishing
Date published: 2017
DOI: 10.1016/j.bioactmat.2017.07.001
ISSN: 2452-199X
Copyright note: Copyright © 2017 The Authors. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/bync-nd/4.0/).
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99450411202621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Engineering, Biomedical; Materials Science, Biomaterials

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