Wear and surface degradation of commercial ZTA femoral heads under boundary lubrication conditions.
Autor: | Marin E; Ceramic Physics Laboratory, Kyoto Institute of Technology, Kyoto, Japan. Electronic address: n14i0002@kit.ac.jp., Rondinella A; Ceramic Physics Laboratory, Kyoto Institute of Technology, Kyoto, Japan., Zhu W; Department of Medical Engineering for Treatment of Bone and Joint Disorders, Osaka University, Osaka, Japan., McEntire BJ; AMEDICA Corporation, 1885 West 2100 South, Salt Lake City, UT 84119, United States., Bal BS; AMEDICA Corporation, 1885 West 2100 South, Salt Lake City, UT 84119, United States., Pezzotti G; Ceramic Physics Laboratory, Kyoto Institute of Technology, Kyoto, Japan. Electronic address: pezzotti@kit.ac.jp. |
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Jazyk: | angličtina |
Zdroj: | Journal of the mechanical behavior of biomedical materials [J Mech Behav Biomed Mater] 2017 Jan; Vol. 65, pp. 616-626. Date of Electronic Publication: 2016 Sep 28. |
DOI: | 10.1016/j.jmbbm.2016.09.038 |
Abstrakt: | The effect of frictional sliding on the surface degradation of commercially available zirconia-toughened alumina (ZTA) femoral heads was studied using a pin-on-ball wear tester under three different lubricating conditions: dry, water, and squalene. Water and squalene were employed under boundary lubrication regimes. Despite the unique (non-standard) character of this apparatus, standard loading conditions could be applied, which effectively determined dynamic friction coefficients as basic material properties. Two types of surface degradation were observed: (i) the polymorphic tetragonal-to-monoclinic (t→m) transformation of the zirconia (ZrO (Copyright © 2016 Elsevier Ltd. All rights reserved.) |
Databáze: | MEDLINE |
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