Properties of ultrafine-grained Mg-based composites modified by addition of silver and hydroxyapatite |
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| Authors: | Kamil Kowalski Mieczyslawa U. Jurczyk Przemyslaw K. Wirstlein Jaroslaw Jakubowicz Mieczyslaw Jurczyk |
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| Affiliation: | 1. Faculty of Mechanical Engineering and Management, Institute of Materials Science and Engineering, Poznan University of Technology, Poznan, Poland;2. Division of Mother’s and Child’s Health, Poznan University of Medical Sciences, Poznan, Poland;3. Department of Gynaecology and Obstetrics, Division of Reproduction, Poznan University of Medical Sciences, Poznan, Poland |
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| Abstract: | In this study, hydroxyapatite and silver were added to Mg–1Zn–1Mn–0.3Zr alloy to fabricate ultrafine-grained metal matrix composites. Grain sizes of approximately 85?nm were recorded by atomic force microscopy for the Mg–1Zn–1Mn–0.3Zr–5 wt-% HA–1 wt-% Ag composite. The contact angles in water and simulated body fluid on the ultrafine-grained Mg–1Zn–1Mn–0.3Zr-based composites were determined. Following a hydrofluoric acid treatment, the surface wettability changed from hydrophilicity to hydrophobicity. The electrochemical test showed that the corrosion resistance of the fluoride-treated specimens was higher, when compared with the untreated samples. The Mg–1Zn–1Mn–0.3Zr–5 wt-% HA and Mg–1Zn–1Mn–0.3Zr–5?wt-% of HA–1 wt-% Ag composites modified with MgF2 have a higher degree of biocompatibility, which makes them potential candidates for medical applications |
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| Keywords: | Magnesium hydroxyapatite ultrafine grain metal matrix composites |
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