TY - JOUR
T1 - Corrosion study of graphene oxide coatings on AZ31B magnesium alloy
AU - Maqsood, Muhammad Faheem
AU - Raza, Mohsin Ali
AU - Ghauri, Faizan Ali
AU - Rehman, Zaeem Ur
AU - Ilyas, Muhammad Tasadaq
N1 - Publisher Copyright:
© 2020, American Coatings Association.
PY - 2020/9
Y1 - 2020/9
N2 - The aim of this study was to produce graphene oxide (GO) coatings on biodegradable AZ31B magnesium (Mg) alloy. GO was synthesized by improved Hummers’ method, and a suspension was prepared in deionized water by ultrasonication. GO coatings were developed on AZ31B Mg alloy by electrophoretic deposition (EPD). The EPD parameters, such as voltage and time, were optimized to obtain uniform GO coatings. Characterization was carried out using Fourier transform infrared spectroscopy, X-ray diffraction, atomic force microscopy (AFM), and scanning electron microscopy. GO was found to have a thickness of approximately 0.7–1 nm as determined by AFM. Electrochemical behavior of coatings was evaluated by Tafel analysis and electrochemical impedance spectroscopy (EIS) in Ringer’s lactate solution. GO coatings improved the corrosion resistance of the AZ31B Mg alloy by 16× in Ringer’s lactate solution as compared to bare Mg alloy.
AB - The aim of this study was to produce graphene oxide (GO) coatings on biodegradable AZ31B magnesium (Mg) alloy. GO was synthesized by improved Hummers’ method, and a suspension was prepared in deionized water by ultrasonication. GO coatings were developed on AZ31B Mg alloy by electrophoretic deposition (EPD). The EPD parameters, such as voltage and time, were optimized to obtain uniform GO coatings. Characterization was carried out using Fourier transform infrared spectroscopy, X-ray diffraction, atomic force microscopy (AFM), and scanning electron microscopy. GO was found to have a thickness of approximately 0.7–1 nm as determined by AFM. Electrochemical behavior of coatings was evaluated by Tafel analysis and electrochemical impedance spectroscopy (EIS) in Ringer’s lactate solution. GO coatings improved the corrosion resistance of the AZ31B Mg alloy by 16× in Ringer’s lactate solution as compared to bare Mg alloy.
KW - Atomic force microscopy
KW - Coatings
KW - Corrosion
KW - Graphene oxide
KW - Improved Hummers’ method
KW - Magnesium alloys
KW - Ringer’s lactate
UR - http://www.scopus.com/inward/record.url?scp=85085710132&partnerID=8YFLogxK
U2 - 10.1007/s11998-020-00350-3
DO - 10.1007/s11998-020-00350-3
M3 - Article
AN - SCOPUS:85085710132
SN - 1547-0091
VL - 17
SP - 1321
EP - 1329
JO - Journal of Coatings Technology and Research
JF - Journal of Coatings Technology and Research
IS - 5
ER -