Preparation of Ni-W-eGO composite coatings and investigation of its mechanical properties and corrosion resistance

Abstract

In this paper, we explore the use of electrochemically prepared edge-oxidized graphene oxide (herein after referred to as eGO) as nano-materials doped in Ni-W electrolyte solution. Here, eGO with high dispersion properties was successfully applied to the Ni-W plating solution system, and high-performance Ni-W-eGO coating was prepared on P110 carbon steel by pulse electrodeposition method. In addition, by exploring the content of eGO in the electrolyte solution, we evaluated the comprehensive performance of different Ni-W-eGO composite coatings. Compared with the original Ni-W coating, the Ni-W-eGO composite coating can significantly improve the corrosion resistance of the P110 steel sheet in a 3.5 wt% NaCl solution. The corrosion resistance was measured by the electrochemical method, and the wear resistance was measured by friction experiment. Finally, the appropriate amount of eGO was 0.5 g/L. In this article, we explore the use of electrochemically prepared edge-oxidized graphene oxide as nano-filler, and successfully prepared Ni-W-eGO composite coating on P110 steel sheet by pulse electrodeposition. The eGO material itself has good mechanical enhancement properties, and at the same time has good dispersibility in the electrolyte solution, showing excellent solution stability. This is because only the oxidation of the graphene edges to obtain hydrophilic groups does not destroy the integrity of the graphene structure. The prepared Ni-W-eGO composite coating has a flatter surface than the Ni-W coating, and has better corrosion resistance and wear resistance. • The first use of water-dispersed high-quality graphene nano-sheets (eGO) in the field of electroplating. • The Ni-W-eGO (eGO 0.5 g/L) composite coating has excellent wear resistance and corrosion resistance. • In this work, we used a variety of characterization methods such as XRD, SEM, EDS, EIS and mechanical performance testing. • Provide new ideas for the preparation of high-performance graphene-based coatings.