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Influence of different CoCrMo counterfaces on wear in UHMWPE for artificial joints

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DOI: 10.4236/jbise.2011.45047    4,408 Downloads   8,153 Views   Citations


Wear tests were carried out to study the effect of various counterface materials in the wear behaviour of Ultra High Molecular Weight Polyethylene (UHMWPE). The materials used as counterfaces were based on varieties of CoCrMo: 1) forged (hand-polished) CoCrMo, 2) forged (mass-finished) CoCrMo, and 3) cast (mass-finished) CoCrMo. Addi-tionally, two coatings were proposed: 1) a CoCrMo coating applied to the forged CoCrMo alloy by means of physical vapour deposition (PVD), and 2) a ZrO2 coating applied to the forged CoCrMo alloy by means of plasma-assisted chemical vapour deposition (PACVD). The reciprocating pin-on-flat (RPOF) de-vice for pin-on-disk wear testing was used for this study. The worn surfaces were observed using optical, atomic force and scanning electron microscopes.

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González-Mora, V. , Hoffmann, M. , Stroosnijder, R. , Espinar, E. , Llamas, J. , Fernández-Fairén, M. and Gil, F. (2011) Influence of different CoCrMo counterfaces on wear in UHMWPE for artificial joints. Journal of Biomedical Science and Engineering, 4, 375-382. doi: 10.4236/jbise.2011.45047.

Conflicts of Interest

The authors declare no conflicts of interest.


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