title: Wear mapping of CoCrMo alloy in simulated bio-tribocorrosion conditions of a hip prosthesis bearing in calf serum solution.
abstract: Wear maps were developed following a series of micro-abrasion-corrosion testing during idealised hip contact conditions for a CoCrMo alloy in a foetal calf serum solution. The main aim of the study was to characterise wear-corrosion or bio-tribocorrosion regimes of the alloy over a range of applied loads and applied potentials. The transitioning micro-abrasion-corrosion mechanisms, synergisms and wastage behaviours in the presence of additional abrasive particles were identified and mapped. Wear maps in earlier work show the wear-corrosion transitions of CoCrMo alloy in the absence of abrasive particles for similar conditions; the wear maps developed in this work were compared. Mapping the micro-abrasion-corrosion regimes indicated that proteins present in foetal calf serum solution, resulting in development of a graphitic tribo-layer, may play a critical role in enhancing or protecting against tribo-corrosive degradation.
authors: Department of Mechanical Engineering, University of Strathclyde, 75 Montrose St., Glasgow G1 1XJ, UK; Department of Biomedical Engineering, University of Strathclyde, Wolfson Centre, 106 Rottenrow, Glasgow G4 0NW, UK. Electronic address: kamran.sadiq@strath.ac.uk.
authors: K
authors: K
authors: Sadiq
authors: Department of Mechanical Engineering, University of Strathclyde, 75 Montrose St., Glasgow G1 1XJ, UK.
authors: M M
authors: MM
authors: Stack
authors: Department of Biomedical Engineering, University of Strathclyde, Wolfson Centre, 106 Rottenrow, Glasgow G4 0NW, UK.
authors: R A
authors: RA
authors: Black
mesh_terms: D000497:Alloys; D002857:Chromium / Q000737:chemistry; D003035:Cobalt / Q000737:chemistry; D003343:Corrosion; D008855:Microscopy, Electron, Scanning; D008982:Molybdenum / Q000737:chemistry
chemical_list: D000497:Alloys; D002857:Chromium; D003035:Cobalt; D008982:Molybdenum
keywords: Bio-tribocorrosion; Calf serum; CoCrMo; Hip replacement; Tribocorrosion maps; Wear mapping