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Tribochemical reactions in a protein lubricated metal-on-metal (MoM) sliding contact may play a significant role for its wear performance. Such reactions lead to the formation of a carbonaceous ‘tribofilm’, which can act as a protective layer against corrosion and wear. The purpose of this study was to determine the effect of contact load on wear and the formation and retention of tribofilms.Wear...
The microstructural and mechanical properties of the hard phases in CoCrMo prosthetic alloys in both cast and wrought conditions were examined using transmission electron microscopy and nanoindentation. Besides the known carbides of M 23 C 6 -type (M=Cr, Mo, Co) and M 6 C-type which are formed by either eutectic solidification or precipitation, a new mixed-phase hard constituent...
Metal-on-metal hip arthroplasties have been successfully implanted for many years. During the last decade the metal-on-metal hip resurfacing has also experienced a renaissance. Both perform low wear rates due to nano-meter-scale wear particles. These particles represent a limitation causing harm to the human body.In order to investigate the emission of wear particles in ultra-low wear systems micro-structural...
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