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Bio-tribocorrosion – current concepts in micro-abrasion–corrosion mapping of CoCrMo alloy for hip replacement bearings

Sadiq, K. and Black, R. A. and Stack, M. M. (2015) Bio-tribocorrosion – current concepts in micro-abrasion–corrosion mapping of CoCrMo alloy for hip replacement bearings. In: TriboUK 2015, 2015-04-16 - 2015-04-17, Loughborough University.

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Abstract

Wear is recognized as the primary mode of failure in hip replacement devices in-vivo, and remains an on-going challenge for orthopaedic manufacturers, clinicians and tribologists. The aim of this work was to characterize the micro-abrasion–corrosion performance for a cobalt-chromium-molybdenum (CoCrMo) alloy and ultra-high molecular weight polyethylene (UHMWPE) bearing couple over a range of applied loads and applied potentials in a physiological solution. The transitioning micro-abrasion–corrosion mechanisms, synergisms and wastage performances have been identified and mapped.