Abstract：
:Yttria stabilized zirconia reinforced hydroxyapatite coatings were deposited by a gas tunnel type plasma spray torch under optimum spraying conditions. For this purpose, 10, 20 and 30 wt% of yttria stabilized zirconia (YSZ) powders were premixed individually with hydroxyapatite (HA) powder and were used as the feedstocks for the coatings. The effect of YSZ reinforcement on the phase formation and mechanical properties of the coatings such as hardness, adhesive strength and sliding wear rates was examined. The results showed that the reinforcement of YSZ in HA could significantly enhance the hardness and adhesive strength of the coatings. The potentiodynamic polarization and impedance measurements showed that the reinforced coatings exhibited superior corrosion resistance compared to the HA coating in SBF solution. Further the results of the bioactivity test conducted by immersion of coatings in SBF showed that after 10 days of immersion of the obtained coatings with all the above compositions commonly exhibited the onset of bioactive apatite formation except for HA+10%YSZ coating. The cytocompatibility was investigated by culturing the green fluorescent protein (GFP)-labeled marrow stromal cells (MSCs) on the coating surface. The cell culture results revealed that the reinforced coatings have superior cell growth than the pure HA coatings.
journal_name
J Mech Behav Biomed Materauthors
Yugeswaran S,Yoganand CP,Kobayashi A,Paraskevopoulos KM,Subramanian Bdoi
10.1016/j.jmbbm.2011.11.002subject
Has Abstractpub_date
2012-05-01 00:00:00pages
22-33eissn
1751-6161issn
1878-0180pii
S1751-6161(11)00285-2journal_volume
9pub_type
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journal_title：Journal of the mechanical behavior of biomedical materials
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journal_title：Journal of the mechanical behavior of biomedical materials
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更新日期：2013-05-01 00:00:00
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journal_title：Journal of the mechanical behavior of biomedical materials
pub_type： 杂志文章
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更新日期：2015-03-01 00:00:00
