Simoes, TA, Goode, AE, Porter, AE et al. (4 more authors) (2014) Microstructural characterization of low and high carbon CoCrMo alloy nanoparticles produced by mechanical milling. Journal of Physics: Conference Series, 522 (1). ARTN 012059. ISSN 1742-6588
Abstract
CoCrMo alloys are utilised as the main material in hip prostheses. The link between this type of hip prosthesis and chronic pain remains unclear. Studies suggest that wear debris generated in-vivo may be related to post-operative complications such as inflammation. These alloys can contain different amounts of carbon, which improves the mechanical properties of the alloy. However, the formation of carbides could become sites that initiate corrosion, releasing ions and/or particles into the human body. This study analysed the mechanical milling of alloys containing both high and low carbon levels in relevant biological media, as an alternative route to generate wear debris. The results show that low carbon alloys produce significantly more nanoparticles than high carbon alloys. During the milling process, strain induces an fcc to hcp phase transformation. Evidence for cobalt and molybdenum dissolution in the presence of serum was confirmed by ICP-MS and TEM EDX techniques.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014, AIP Publishing Simoes, TA, Goode, AE, Porter, AE, Ryan, MP, Milne, SJ, Brown, AP and Brydson, RMD (2014) Microstructural characterization of low and high carbon CoCrMo alloy nanoparticles produced by mechanical milling. Journal of Physics: Conference Series, 522 (1). ARTN 012059, used in accordance with the Creative Commons Attribution 3.0 Unported License. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Materials Research (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 24 Nov 2014 11:11 |
Last Modified: | 24 Nov 2014 12:58 |
Published Version: | http://dx.doi.org/10.1088/1742-6596/522/1/012059 |
Status: | Published |
Publisher: | Institute of Physics Publishing |
Identification Number: | 10.1088/1742-6596/522/1/012059 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:81329 |