The Wear of High Molecular Weight Polyethylene—Part I: The Wear of Isotropic Polyethylene Against Dry Stainless Steel in Unidirectional Motion

Author:

Atkinson J. R.1,Brown K. J.2,Dowson D.3

Affiliation:

1. Department of Metallurgy, The University of Leeds, Leeds, England

2. Advanced Projects Group, BOC Ltd., Crawley, Sussex, England

3. Department of Mechanical Engineering, The University of Leeds, Leeds, England

Abstract

The wear of surgical grade ultra-high molecular weight polyethylene against stainless steel has been studied for unidirectional motion. After a short wearing-in period, two distinct steady-state regions appear on the wear graphs. In the first section adhesion is the predominant wear mechanism and a transfer film of polymer builds up on the steel counterface. After a certain sliding distance, determined by the load, the adhesive mechanism is augmented by fatigue wear and the wear rate increases sharply and remains constant at the new value.

Publisher

ASME International

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