Realization of Graphene on the Surface of Electroless Ni–P Coating for Short-Term Corrosion Prevention

Abstract

Abstract:Graphene was first fabricated on the surface of an electroless Ni-P coating/carbon steel (Ni-P-G) to improve its corrosion resistance. Meanwhile, an electroless Ni-P coating (Ni-P) was heated (Ni-P-H) under the same condition as Ni-P-G for comparison. The morphological results showed that a wavy multilayer graphene was formed on the surface of Ni-P-G. The layer number of the graphene film was 5-10 according to the analysis of Raman spectra and observation by a high-resolution transmission electron microscope. The I D /I G ratio calculated from the Raman spectrum revealed that the graphene growing at the grain of Ni-P-H had larger grain size than that growing at the grain boundary. The electrochemical results showed a higher R p , a lower CPE dl , and a lower corrosion rate of Ni-P-G than Q235 steel, Ni-P, and Ni-P-H, indicating a higher corrosion resistance. In addition, the surface potential map achieved by a scanning Kelvin probe presented a more positive surface potential of Ni-P-G than Ni-P with the difference being around 375-750 mV, demonstrating a lower corrosion tendency of Ni-P-G.

Influence of electroless NiP/graphene coating on treated woven ramie fiber and its characterization

“…Particles such as graphene [15], carbon nanotubes [16], carbon black, and silver [17] are regarded as feasible option for the surface modification of natural fiber to improve the interfacial adhesion, strength, thermal and electrical conductivities [18]. The interlocking pin-like behavior of the particles at the interface between the fiber and matrix eventually aids in improving load transmission from matrix to fiber [19].…”

“…The interlocking pin-like behavior of the particles at the interface between the fiber and matrix eventually aids in improving load transmission from matrix to fiber [19]. Graphene has garnered a lot of attention as a promising material, because of its very high specific surface area, high electric conductivity (10 6 Scm −1 ), good thermal conductivity, and exceptional mechanical strength [15]. Therefore, electroless deposition technique is an easy and feasible method to obtain a functional surface by coating NiP/Graphene uniformly on the non-conductive fiber substrate.…”

On the Distinctive Hardness, Anti-Corrosion Properties and Mechanisms of Flame-Deposited Carbon Coating with a Hierarchical Structure in Contrast to a Graphene Layer via Chemical Vapor Deposition

“…Graphene coatings have been demonstrated to be highly effective in protecting Cu and Cu/Ni alloy substrates from oxidation [ 7 ]. Research on the graphene-based anti-corrosive coatings has been attracting increasing attention [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. For example, graphene/epoxy coatings were fabricated and displayed outstanding protection performance due to the maximized barrier effect through the well-controlled distribution of graphene in the coating [ 13 ].…”