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In vitro corrosion behavior, bioactivity, and antibacterial performance of the silver‐doped zinc oxide coating on magnesium alloy

In this paper, nanostructured silver‐doped zinc oxide (Ag‐ZnO) coating was prepared on Mg‐2Ca‐0.5Mn‐6Zn alloy surface with improved corrosion resistance and antibacterial activity through physical vapor deposition (PVD). Microstructural analysis showed that the Ag‐ZnO coating was adherent to the substrate with a thickness and particle size of 1 µm and 85 nm, respectively. The nanostructured Ag‐ZnO coated specimens exhibited lower corrosion current density (icorr), and higher charge‐transfer resistance (Rct) compared with the uncoated Mg alloy. Antimicrobial examination demonstrated that the Ag‐ZnO coated specimen revealed a significantly better antimicrobial performance toward Escherichia coli and Staphylococcus aureus compared to the uncoated sample. The results also showed that the Ag‐ZnO coating considerably reduces the corrosion rate and improves antimicrobial performance of the Mg alloy substrate.

Nanostructured silver‐doped zinc oxide (Ag‐ZnO) coating was prepared on Mg‐2Ca‐0.5Mn‐6Zn alloy surface with improved corrosion resistance and antibacterial activity through PVD. Nanostructured Ag‐ZnO coated specimens presented lower Icorr, and higher Rct compared with uncoated Mg alloy. Antimicrobial examination has shown that Ag‐ZnO coated specimen revealed a significantly better antimicrobial performance.

Authors:   Hamid R. Bakhsheshi‐Rad, Esah Hamzah, Ahmad F. Ismail, Madzlan Aziz, Masoud Kasiri‐Asgarani, Hamid Ghayour, Mahmmod Razzaghi, Zhina Hadisi
Journal:   Materials and Corrosion
Year:   2017
Pages:   n/a
DOI:   10.1002/maco.201709597
Publication date:   04-Sep-2017
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