期刊
CERAMICS INTERNATIONAL
卷 46, 期 5, 页码 6958-6964出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2019.11.074
关键词
Mg alloys; Bulk metallic glass; HA/ZnO coating; Corrosion; Hydrothermal method; Biomaterials
资金
- National Natural Science Foundation of China [51665036]
- Natural Science Foundation of Jiangxi Province [20152ACB20014]
Mg68Zn28Ca4 BMG with 4 mm diameter was prepared by rapid solidification process. On the premise of guaranteeing the amorphous structure of the matrix, a dense nano-HA/ZnO coating with 16 mu m thickness and multilayer structure was prepared on the surface of BMG by a simple one-step hydrothermal method in acid situation. The microstructure, element distribution and corrosion resistance of HA/ZnO coated BMG were analyzed by XRD, SEM, EDS and electrochemical measurements. After hydrothermal treatment, nano-HA whisker with high crystallinity was grown on the surface of BMG. Comparing with pure Mg and BMG without coating, the corrosion resistance of BMG with HA/ZnO coating in SBF was greatly improved. Due to the presence of ZnO in the coating, the in vitro antibacterial rate of BMG is close to 100%. Hence, nano-HA/ZnO coated BMG exhibits good biocompatibility and outstanding corrosion resistance. As a temporary medical implant, nano-HA/ZnO coated BMG has prospective application.
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