Fabrication of Superhydrophobic Nickel‐Reduced Graphene Oxide Coating with Corrosion Resistance in High‐Temperature and High‐Pressure CO₂ Environment

Abstract

A novel superhydrophobic nickel‐reduced graphene oxide (sNi‐rGO) coating is fabricated successfully on an N80 steel substrate using a simple electrodeposition method combined with a directly elevated current approach. The results show that the water contact angle (WCA) of the coating is 162.87° when the concentration of graphene oxide (GO) is 0.6 g L−1. The autoclave experiments indicate that the coatings still maintain superhydrophobic and corrosion resistance under high‐temperature and high‐pressure CO2 condition. The density functional theory calculations are employed to investigate the adsorption models of carbonate (CO32−) on the surfaces of iron (Fe), nickel (Ni), and rGO to further verify the CO2 corrosion resistance mechanism of the sNi‐rGO coating.

Study on the failure analysis of four metals for anaerobic fermentation reactor based on numerical simulation and electrochemical method

“…The influence on the yield strength of different metals was far greater than that of the yield strength. At the same time, the yield strength and tensile strength of 3Cr13 steel were reduced much more than that of Q235A, Q345A and 45# steels, especially the yield strength [17][18][19]. On the other hand, under the research conditions in this paper, the greater the yield strength of the metal was, the greater the decrease rate of tensile strength and yield strength was under the condition E in table 3 for 7 days.…”

Mechanism and anti-corrosion measures of carbon dioxide corrosion in CCUS: A review

“… 116 ) Copyright 2022, Elsevier; (H) (Wang et al. 117 ) Copyright 2021, John Wiley and Sons; (I) (Al Shenawa et al. 118 ) Copyright 2021, Taylor & Francis.…”

“…But Wang et al. 117 fabricated a novel superhydrophobic nickel-reduced graphene oxide (sNi-rGO) coating on N80 steel substrate. As shown in Figure 12 H, the sNi-rGO coating has excellent corrosion resistance in simulated well fluid.…”