Tribological and microstructural analysis of Al2O3/TiO2 nanocomposites to use in the femoral head of hip replacement

Soo Whon Lee, Carlos Morillo, Joaquín Lira-Olivares, Seung Ho Kim, Tohru Sekino, Koichi Niihara, Bernard J. Hockey

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

Total hip joint replacement is the major achievement in orthopedic surgery; zirconia and alumina have been widely used in the medical field due to their biocompatibility, excellent corrosion resistance, low friction, high wear resistance, high strength, and low cost. Fracture toughness of alumina is enhanced with dispersion of nanometer sized particles of TiO2, Al2O3/TiO2 nanocomposite. Therefore, this can be a good material for the femoral head of total hip joint replacement. This study simulation of human body behavior and movement of hip joint was carried out in a ball-on-disc tribometer, using silicon nitride balls and distilled water at 37 °C for 100 h. Al2O3/TiO2 nanocomposite disk were hot pressed at 1500 °C and 25 MPa, in an Ar atmosphere for 1 h.

Original languageEnglish
Pages (from-to)1040-1044
Number of pages5
JournalWEAR
Volume255
Issue number7-12
DOIs
Publication statusPublished - 2003

Keywords

  • Alumina
  • Hip joint
  • Nanocomposite
  • Titania

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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