Surface characterization and debris analysis of ceramic pairings after ten million cycles on a hip joint simulator

S. Affatato, G. Ferrari, J. Chevalier, O. Ruggeri, A. Toni

Research output: Contribution to journalArticle

Abstract

This study was aimed at characterizing the ceramic wear particles produced during tests on a hip joint wear simulator of up to 10 million cycles. Alumina and alumina-zirconia composites were studied as commercial or potential hip joint products respectively. No ceramic particles could be observed, even after a careful isolation procedure. This confirms the low wear rate found for these materials in previous works (of the order of tenths of milligrams per million cycles). Surface characterization was conducted by means of scanning electron microscopy. It confirms the low wear regime of ceramic pairings and allows ceramic wear debris morphology to be defined. The effect of microstructure on surface wear is discussed.

Original languageEnglish
Pages (from-to)419-424
Number of pages6
JournalProceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
Volume216
Issue number6
DOIs
Publication statusPublished - 2002

Keywords

  • Ceramic debris
  • Million cycles
  • Particulate characterization
  • Surface degradation

ASJC Scopus subject areas

  • Biomedical Engineering
  • Mechanical Engineering
  • Medicine(all)

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