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Article
Improved friction and wear performance of micro dimpled ceramic-on-ceramic interface for hip joint arthroplasty
Ceramics International (2015)
Abstract

The purpose of this study is to investigate the tribological effect of micro-dimpled surface textures for application in ceramic-on-ceramic hip prostheses. A rectangular array of circular dimples was selected as the texture pattern. A CNC micro drilling machine was used to fabricate these dimples on a flat ceramic substrate. Tribology tests were performed by using a pin-on-disk method with selected hertzian contact pressures and speeds based on normal gait of a hip joint, and results compared with non-dimpled surface. A dimpled surface with large dimple diameters and a high dimple density (phi 400 mu m and density 15%) showed significant tribological performance gains, including a nearly 22% friction and 53% wear reduction. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved. Link to Full-Text Articles : http://www.sciencedirect.com/science/article/pii/S0272884214013649

Keywords
  • ceramic-on-ceramic hip joints,
  • micro-dimple,
  • wear,
  • rolling-contact fatigue,
  • artificial hip,
  • knee arthroplasty,
  • concave dimples,
  • al2o3 surfaces,
  • film formation,
  • lubrication,
  • reduction,
  • polyethylene,
  • bearing
Publication Date
January, 2015
Publisher Statement
A Aw3xk Times Cited:0 Cited References Count:56
Citation Information
"Improved friction and wear performance of micro dimpled ceramic-on-ceramic interface for hip joint arthroplasty" Ceramics International Vol. 41 Iss. 1 (2015)
Available at: http://works.bepress.com/facultyofengineering_universityofmalaya/119/