Dehghan-Manshadi, A;
Chen, Y;
Shi, Z;
Bermingham, M;
StJohn, D;
Dargusch, M;
Qian, M;
(2018)
Porous Titanium Scaffolds Fabricated by Metal Injection Moulding for Biomedical Applications.
Materials
, 11
(9)
10.3390/ma11091573.
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Abstract
Biocompatible titanium scaffolds with up to 40% interconnected porosity were manufactured through the metal injection moulding process and the space holder technique. The mechanical properties of the manufactured scaffold showed a high level of compatibility with those of the cortical human bone. Sintering at 1250 °C produced scaffolds with 36% porosity and more than 90% interconnected pores, a compressive yield stress of 220 MPa and a Young's modulus of 7.80 GPa, all suitable for bone tissue engineering. Increasing the sintering temperature to 1300 °C increased the Young's modulus to 22.0 GPa due to reduced porosity, while reducing the sintering temperature to 1150 °C lowered the yield stress to 120 MPa, indicative of insufficient sintering. Electrochemical studies revealed that samples sintered at 1150 °C have a higher corrosion rate compared with those at a sintering temperature of 1250 °C. Overall, it was concluded that sintering at 1250 °C yielded the most desirable results.
| Type: | Article |
|---|---|
| Title: | Porous Titanium Scaffolds Fabricated by Metal Injection Moulding for Biomedical Applications |
| Location: | Switzerland |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3390/ma11091573 |
| Publisher version: | http://dx.doi.org/10.3390/ma11091573 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | corrosion, mechanical properties, metal injection moulding, scaffold, space holder, titanium |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10056630 |
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