Abstract
Metal matrix composites have become a research hotspot due to their unique properties. In this paper, Ni-W-Carbon fiber (CF) composite coating was prepared by electrodeposition method, and the effects of CF content on the microstructure, composition, and corrosion resistance of the coating were studied by means of Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectrometer (EDS) and electrochemical testing by changing the concentration of CF in the plating solution. The results show that when 0.4 g/L nano-CF is added, the CF content in the composite coating is the largest and the distribution is uniform; the surface roughness Ra of the composite coating reaches a minimum of 14 nm. The electrochemical results show that the composite coating electrodeposited in the electrolyte containing 0.4 g/L nano-CF has the highest corrosion resistance. The Guglielmi model can be used to describe the co-deposition behavior. This study provides useful enlightenment for the further application of Ni-W-CF coating in harsh corrosive environments.
Highlights
In recent years, the rapid development of oil, natural gas and other energy sources has given the oil and gas industry an extremely important position in China’s energy strategy, and is closely related to national security and economic development
With the increase of nano-Carbon fiber (CF) content, as shown in Figure 1c, a series of cellular structures appeared on the surface of the composite coating, and a few agglomerations still existed
It can be seen that the addition of CF has great influence on the morphology of the Ni-W-CF composite coating, and the particle size of the Ni-W-CF composite coating is uniform at 0.4 g/L
Summary
The rapid development of oil, natural gas and other energy sources has given the oil and gas industry an extremely important position in China’s energy strategy, and is closely related to national security and economic development. Pipelines are mainly protected by the following methods: using materials with good corrosion resistance, adding corrosion inhibitors [3], surface technology protection (electrochemical protection, cathodic protection, anode protection) [4], surface structure protection (coating), etc. To meet the demand for high-performance coatings in harsh environments, researchers have tried to incorporate nanoparticles into the Ni-W matrix to improve its corrosion resistance. Aliofkhazraei et al [16] showed that adding α-Al2O3 particles into Ni–W matrix can improve the corrosion resistance of alloy in solution with high Cl− concentration. Zhang et al [25] showed the effect of TiN concentration in 3.5% NaCl solution on the corrosion behavior of Ni-W coatings, and found that when TiN content is 30 g/L, Rct reaches 28,991 Ω·cm, and the coating has the best corrosion resistance.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
