Development of long term durability anticorrosive coating
Scientists report the preparation of GO composite coating with an orderly layered nanostructure by cathodic electrophoretic deposition to get long-term durability anticorrosive coatings.
The morphological characterisation was carried out by scanning electron microscopy, which clearly shows GO nanosheets were orderly stacked. Electrochemical test and corrosion morphology confirmed that the optimized composite coating showed long-term durability exposed in a 3.5 wt.% NaCl solution. The excellent protection of the optimized composite coating is because of the inherent impermeability of GO and the orderly layered nanostructure.
Resistance to saltwater
First, the orderly layered nanostructure can increase the content of GO and give full play to the inherent impermeability and chemical stability of GO. Second, the orderly stacked GO can reduce the diffusion path of the corrosion medium and retard the degradation of the polymer.
According to the publishers, the work highlights a workable route for the large-scale preparation of coatings with superior long-term durability, especially for marine engineering materials where resistance to saltwater is of paramount importance.
The study has been published in Progress in Organic Coatings, Volume 151, February 2021.
