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Abstract

In this study the wear of Ultra-High-molecular Weight Polyethylene (UHMWPE) was investigated using a Reciprocating Pin-on-Flat machine (RDOF) and a hip joint simulator (HIS). The wear couples consisted of UHMWPE and three different CoCrMo surfaces: a standard forged CoCrMo alloy, which underwent two different polishing treatments, and a CoCrMo coating applied by magnetron sputtering physical vapor deposition (PVD). The results show that in the RPOF tests the PVD coating caused significantly higher UHMWPE wear compared to the forged CoCrMo alloy. In the HIS the ranking of the CoCrMo counterfaces with respect to UHMWPE wear was found to be the opposite.

Additional information

Authors: GONZALEZ-MORA V, EC, Institute for Health and Consumer Protection, Ispra (IT);HOFFMANN M, EC, Institute for Health and Consumer Protection, Ispra (IT);STROOSNIJDER M.F, EC, Institute for Health and Consumer Protection, Ispra (IT);CHIESA R, Politecnico di Milano, Dipartimento di Chimica Fisica Applicata, Milano (IT);COGADA A, Politecnico di Milano, Dipartimento di Chimica Fisica Applicata, Milano (IT)
Bibliographic Reference: An oral report given at: EUROMAT 2001. Organised by: Associazione Italiana di Metallurgia. Held in: Rimini (IT) 10-14 June 2001
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