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    Home > Coatings News > Paints and Coatings Market > Electrophoresis deposited on Cu-Ni alloy graphene oxide-polymer double coating, with enhanced corrosion resistance.

    Electrophoresis deposited on Cu-Ni alloy graphene oxide-polymer double coating, with enhanced corrosion resistance.

    • Last Update: 2020-10-22
    • Source: Internet
    • Author: User
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    For practical research, an environmentally friendly and easy-to-use double coating consisting of graphene oxide (GO) and acrylic polymers has been manufactured on the white copper sample.
    is done through electrophoresis deposition and immersion. The study of infrared, Raman spectroscopic and field emission scanning electron microscopes (FESEM) of the double coating confirmed that GO wasthrough non-co-price functioning of H-bonds with acrylic polymers, reduction of local defects in GO structures, and perimeter distortion of spherical voids in polymer coatings.
    of THE FESEM cross-sectional analysis shows that the coating thickness is 5 to 6 m.
    Enhanced corrosion resistance
    Compared to samples individually coated with 3.5% (w/v) NaCl electrolytes, samples of double coatings show three to four times increased corrosion resistance due to reduced local defects in the GO coating and current coupling between GO and the sample surface.
    GO sheet makes the diffusion path of corrosive media more tortuous, so that corrosive ions reach the metal surface. After 30 days of exposure, the low anode current density observed in the new double coating confirms its effective corrosion protection. After 30 days of exposure to chloride media, the water absorption rate is approximately 32.7% and the coating is intact and stable.
    the study has been published in the Journal of Coating Technology and Research, volume 16, pp. 1317-1335.
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