Recent developments in the studies of micro-abrasion have resulted in the construction of mechanistic maps where the change in micro-abrasion is presented as a function of the main tribological parameters. However, in many practical situations where micro-abrasion occurs, the environment tends to be corrosive. In such cases, the interaction of micro-abrasion and corrosion is of interest because the combined interaction may lead to “synergistic” or “antagonistic” effects, where corrosion may have a deleterious or beneficial effect in modifying the mechanical properties of the surface. In this paper, the micro-abrasion of a Co-Cr specimen against an ultra high molecular weight polyethylene (UHMWPE) ball was studied in Ringers solution. The effects of applied load at a range of electrochemical potentials were investigated. Atomic force and scanning electron microscopy techniques were used to identify the extent of wear and the role of the corrosion film on the micro-abrasion rate enabling the various wear, corrosion and the interactive effects to be evaluated for the system. The results showed that various micro-abrasion-corrosion mechanisms could be identified in active and passive conditions. These were used to generate micro-abrasion-corrosion mechanism maps showing the change in mechanism as functions of load and applied potential and the extent of interaction between the wear and the corrosion processes was demonstrated on such maps. Possible uses of the generic form of these maps to identify micro-abrasion-corrosion mechanisms in other bio-medical applications are addressed in this paper.
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World Tribology Congress III
September 12–16, 2005
Washington, D.C., USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4202-9
PROCEEDINGS PAPER
Micro-Abrasion-Corrosion Mapping of Bio-Materials: Some New Perspectives
M. M. Stack,
M. M. Stack
University of Strathclyde, Glasgow, UK
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J. Rodling,
J. Rodling
University of Strathclyde, Glasgow, UK
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M. T. Mathew
M. T. Mathew
University of Strathclyde, Glasgow, UK
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M. M. Stack
University of Strathclyde, Glasgow, UK
J. Rodling
University of Strathclyde, Glasgow, UK
M. T. Mathew
University of Strathclyde, Glasgow, UK
Paper No:
WTC2005-64156, pp. 695-696; 2 pages
Published Online:
November 17, 2008
Citation
Stack, MM, Rodling, J, & Mathew, MT. "Micro-Abrasion-Corrosion Mapping of Bio-Materials: Some New Perspectives." Proceedings of the World Tribology Congress III. World Tribology Congress III, Volume 2. Washington, D.C., USA. September 12–16, 2005. pp. 695-696. ASME. https://doi.org/10.1115/WTC2005-64156
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