Paper Title:
Investigation of Aged Dispersion Ceramics by Means of Hip Simulator
  Abstract

Wear of hip implants is a significant problem for the life expectancy of artificial joints. By using alumina ceramic on ceramic couplings the wear can be decreased. But for further improvement of the safety of THR the aim is the development of new ceramic materials. For orthopaedic applications an Alumina Toughened Zirconia Ceramic ATZ (80% ZrO2-20%Al2O3) and a Zirconia Toughened Alumina ZTA (25% ZrO2-75%Al2O3) were tested regarding their tribological behaviour by means of hip simulator testing after hydrothermal treatment. The absolute wear amount for the aged samples after 5 million cycles is slightly increased on a very low level, but even less wear than for common alumina pairings. In consideration of these excellent results both dispersion ceramics are highly suitable for long term applications.

  Info
Periodical
Key Engineering Materials (Volumes 361-363)
Main Theme
Edited by
Guy Daculsi and Pierre Layrolle
Pages
771-774
DOI
10.4028/www.scientific.net/KEM.361-363.771
Citation
T. Oberbach, S. Begand, W. Glien, C. Kaddick, "Investigation of Aged Dispersion Ceramics by Means of Hip Simulator", Key Engineering Materials, Vols. 361-363, pp. 771-774, 2008
Online since
November 2007
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Price
$32.00
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