Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/29991
Title: A study of wear characteristics of superpolished orthopaedic implant materials using ultra-precision polishing
Authors: Cheung, CF 
Lee, WB 
Charlton, P
To, S 
Keywords: Biomedical
Orthopaedic implants
Pin-on-Plate wear testing
Superpolishing
Ultra-precision machining
Ultra-precision polishing
Wear characteristics
Issue Date: 2010
Publisher: Scientific.Net
Source: Key engineering materials, 2010, v. 447 448, p. 111-115 How to cite?
Journal: Key engineering materials 
Abstract: Ultra-precision polishing is an emerging technology for producing superfinishing surfaces with sub-micrometer form accuracy and surface finish in nanometer range. It has been applied in superpolishing the freeform bearing surfaces of orthopaedic implants. It is believe that the superfished surfaces are capable of prolonging the life of the implants. In this paper, an experimental investigation of ultra-precision polishing of orthopaedic implants and the study of the wear characteristics of the superfinished surfaces using a multi-directional pin-on-plate wear test simulator have been conducted. Tests were carried out over 3 million cycles using Zeeko IRP200 superfinished cobalt chrome pins articulating against cross-linked UHMWPE plates. The results were compared to that of manually polished pins articulated against the same UHMWPE material. The results show that the Zeeko IRP200 polished pins produced better wear performance that that of the manually polished pins.
Description: ICoPE2010 and 13th ICPE International Conference on Precision Engineering, 28-30 July 2010
URI: http://hdl.handle.net/10397/29991
ISSN: 1013-9826
EISSN: 1662-9795
DOI: 10.4028/www.scientific.net/KEM.447-448.111
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