JBiSE  Vol.4 No.5 , May 2011
Influence of different CoCrMo counterfaces on wear in UHMWPE for artificial joints
ABSTRACT
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.

Cite this paper
nullGonzález-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.
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