In vitro corrosion resistance and antibacterial performance of novel tin dioxide-doped calcium phosphate coating on degradable Mg-1Li-1Ca alloy |
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| Authors: | Lan-Yue Cui Guang-Bin Wei Zhuang-Zhuang Han Rong-Chang Zeng Lei Wang Yu-Hong Zou Shuo-Qi Li Dao-Kui Xu Shao-Kang Guan |
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| Affiliation: | 1. College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;2. College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;3. CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China;4. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China |
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| Abstract: | A SnO2-doped calcium phosphate (Ca-P-Sn) coating was constructed on Mg-1Li-1Ca alloy by a hydrothermal process. The fabricated functional coatings were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). A triple-layered structure, which is composed of Ca3(PO4)2, (Ca, Mg)3(PO4)2, SnO2, and MgHPO4·3H2O, is evident and leads to the formation of Ca10(PO4)6(OH)2 in Hank’s solution. Electrochemical measurements, hydrogen evolution tests and plating counts reveal that the corrosion resistance and antibacterial activity were improved through the coating treatment. The embedded SnO2 nanoparticles enhanced crystallisation of the coating. The formation and degradation mechanisms of the coating were discussed. |
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| Keywords: | Magnesium alloys Coatings Corrosion Biomedical materials |
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