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Corrosion resistance and cytotoxicity of a MgF 2 coating on biomedical Mg–1Ca alloy via vacuum evaporation deposition method
Author(s) -
Li N.,
Li Y. D.,
Wang Y. B.,
Li M.,
Cheng Y.,
Wu Y. H.,
Zheng Y. F.
Publication year - 2013
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5257
Subject(s) - alloy , corrosion , coating , materials science , biocompatibility , evaporation , metallurgy , magnesium alloy , magnesium , deposition (geology) , vacuum deposition , electrochemistry , vacuum evaporation , nuclear chemistry , composite material , chemistry , thin film , nanotechnology , layer (electronics) , paleontology , physics , biology , thermodynamics , electrode , sediment
To reduce the biocorrosion rate and enhance the biocompatibility by surface modification, MgF 2 coatings were prepared on Mg–1Ca alloy using vacuum evaporation deposition method. The average thickness of the coating was about 0.95 µm. The results of immersion test and electrochemical test indicated that the corrosion rate of Mg–1Ca alloy was effectively decreased after coating with MgF 2 . The MgF 2 coating induced calcium phosphate deposition on Mg–1Ca alloy. After 72 h culture, MG63 cells and MC3T3‐E1 cells were well spread on the surface of the MgF 2 ‐coated Mg–1Ca alloy, while few cells were observed on uncoated Mg–1Ca alloy samples. In summary, MgF 2 coating showed beneficial effects on the corrosion resistance and thus improved cell response of the Mg–1Ca alloy effectively and should be a good surface modification method for other biomedical magnesium alloys. Copyright © 2013 John Wiley & Sons, Ltd.