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Bio-tribocorrosion mechanisms in orthopaedic devices : mapping the micro-abrasion-corrosion behaviour of a simulated CoCrMo hip replacement in calf serum solution

Sadiq, Kamran and Black, Richard Anthony and Stack, Margaret (2014) Bio-tribocorrosion mechanisms in orthopaedic devices : mapping the micro-abrasion-corrosion behaviour of a simulated CoCrMo hip replacement in calf serum solution. Wear, 316 (1-2). 58–69. ISSN 0043-1648

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Abstract

Load bearing implant prostheses such as orthopaedic hip and knee implants may be considered as tribocorrosion systems since the wear processes are a result of combined mechanical and chemical mechanisms. The long-term success of implant prostheses depends on a number of factors, including age, body weight and activity levels. Pre-clinical testing is therefore crucial in determining the long-term performance, safety and reliability of the implant in-vivo. In this study CoCrMo alloy and UHMWPE couple was tested in a physiological solution of foetal calf serum (FCS) in 0.9 wt. % NaCl to assess the underlying wear mechanisms as a result of applied load (0-5N) and applied potential (-600, -400, -200, 0 and +200 mV). The transitioning behaviours due to micro-abrasion and corrosion were studied; corresponding micro-abrasion-corrosion wear maps were constructed to indicate the mass loss transitions in scope of wastage, mechanisms of wear and synergies between abrasion-corrosion for simulated hip contact conditions.

Item type: Article
ID code: 47505
Keywords: bio-tribocorrosion, CoCrMo, hip replacement, calf serum, tribocorrosion maps, implant prostheses, wear maps, Mechanical engineering and machinery, Bioengineering, Materials Chemistry, Surfaces, Coatings and Films, Mechanics of Materials, Surfaces and Interfaces, Condensed Matter Physics
Subjects: Technology > Mechanical engineering and machinery
Technology > Engineering (General). Civil engineering (General) > Bioengineering
Department: Faculty of Engineering > Biomedical Engineering
Faculty of Engineering > Mechanical and Aerospace Engineering
Depositing user: Pure Administrator
Date deposited: 15 Apr 2014 08:01
Last modified: 21 Sep 2017 11:34
Related URLs:
URI: https://strathprints.strath.ac.uk/id/eprint/47505
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