Tribological analysis of alumina nanocomposites for orthopedics applications

Carlos Morillo, Yoshinori Sawae, Teruo Murakami

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    In this study the tribological analysis of Al 2O 3 nanocomposites/Al 2O 3 pair; proposed as a candidate material to fabricate hip prostheses was carried out. Nanopowders of Al 2O 3 (AKP 50, 300 nm), TiO 2 (PS-25, 50 nm) and Co metallic powder (Nilaco, 28 nm) were mixed and hot pressed. Wear test was carried out in a pin-on-plate tribometer, with a frequency of 1 Hz, a load of 49 N, for 4h; the counterface used was Al 2O 3. Mechanical properties as Vickers hardness, fracture toughness and Young's modulus were estimated using the indentation method. Distilled water and fetal bovine serum solution (FBSS) were used as environment. It was found that the specific wear rate of Al 2O 3 nanocomposites was about 10 -8 mm 3/N*m and the coefficients of friction were around 0.3-0.5 for FBSS. Worn surfaces were observed using SEM.

    Original languageEnglish
    Title of host publication2008 Proceedings of the STLE/ASME International Joint Tribology Conference, IJTC 2008
    Pages127-129
    Number of pages3
    Publication statusPublished - 2009
    Event2008 STLE/ASME International Joint Tribology Conference, IJTC 2008 - Miami, FL, United States
    Duration: Oct 20 2008Oct 22 2008

    Other

    Other2008 STLE/ASME International Joint Tribology Conference, IJTC 2008
    CountryUnited States
    CityMiami, FL
    Period10/20/0810/22/08

    All Science Journal Classification (ASJC) codes

    • Fluid Flow and Transfer Processes
    • Process Chemistry and Technology
    • Mechanical Engineering

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