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In vitro corrosion behavior, bioactivity, and antibacterial performance of the silver‐doped zinc oxide coating on magnesium alloy
Author(s) -
BakhsheshiRad Hamid R.,
Hamzah Esah,
Ismail Ahmad F.,
Aziz Madzlan,
KasiriAsgarani Masoud,
Ghayour Hamid,
Razzaghi Mahmood,
Hadisi Zhina
Publication year - 2017
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201709597
Subject(s) - materials science , coating , corrosion , zinc , alloy , magnesium alloy , magnesium , substrate (aquarium) , metallurgy , oxide , nuclear chemistry , chemical engineering , composite material , chemistry , oceanography , engineering , geology
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 ( i corr ), and higher charge‐transfer resistance ( R ct ) 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.