Electrodeposited SnO 2 /graphene composite as highly effective and stable anticorrosion coating for aluminum alloys in acidic environments
International Journal of Electrochemical Science, ISSN: 1452-3981, Vol: 17, Issue: 10, Page: 221054
2022
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Data on Technology Described by Researchers at Shanghai University of Electric Power (Electrodeposited Sno2/graphene Composite As Highly Effective and Stable Anticorrosion Coating for Aluminum Alloys In Acidic Environments)
2022 DEC 14 (NewsRx) -- By a News Reporter-Staff News Editor at Tech Daily News -- Investigators publish new report on Technology. According to news
Article Description
Using cyclic voltammetry, a SnO 2 /graphene (SnO 2 /G) composite coating was electrodeposited on an aluminum alloy in this study. The morphology and composition of this coating were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Electrochemical impedance spectroscopy (EIS) measurements were performed to evaluate the stability and corrosion resistance of the coating. Moreover, the deposit formation mechanism and anticorrosion mechanism of the composite coating were investigated. The results showed that for electrodeposition conditions with a GO concentration of 0.06 mg/ml and a potential range of 0.6 ~ -1.1 V (vs. SCE) at a scanning rate of 25 mV/s, the composite coating showed good stability in a strong mixed acid solution (0.5 M H 2 SO 4 + 2 ppm HF). The protection efficiency of the deposited coating, which was immersed in an acidic solution for more than 70 h on an aluminum alloy substrate, remained greater than 99.33%, indicating good long-term stability of the composite coating.
Bibliographic Details
Elsevier BV
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