Preparation and Corrosion Resistance of Ni-W-CF Composite Coating on P110 Steel

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.

Preparation and corrosion resistance of superhydrophobic Ni–Co–Al2O3 coating on X100 steel

“…The electrochemical corrosion behaviors of the X100 pipeline steel substrate and its coating were studied using a traditional three-electrode system. 31 Electrochemical experiments were carried out using a Correst CS2350 electrochemical workstation. The working electrode was the prepared X100 steel sample, the working electrode area was 100 mm 2 , the counter electrode was a high-purity graphite electrode, the reference electrode was a saturated calomel electrode, and the solution medium was a simulated alkaline soil solution with a composition of 0.0883 g L −1 Na 2 CO 3 , 0.280 g L −1 NaHCO 3 , 0.0813 g L −1 CaCl 2 , 0.4315 g L −1 MgSO 4 ·7H 2 O, and 5.6676 g L −1 Na 2 SO 4 and its pH = 9.0 ± 0.1 adjusted with a 10% NaOH solution.…”

Comparative Study of Corrosion Performance of LVOF-Sprayed Ni-Based Composite Coatings Produced Using Standard and Reducing Flame Spray Stoichiometry

“…However, the rapid dissolution of Ni in the pore provides Ni 2+ , which further attracts Cl − to maintain electro-neutrality. In addition, when the Ni-W area comes into contact with the corrosive medium, Ni may preferentially dissolve, and it reacts very easily with H+ to produce Ni 2+ , resulting in the formation of a NiO/Ni(OH) 2 protective film [35]. Other cations, such as, Cr 3+ , Si 2+ , and Fe 2+ , can be provided from the dissolution of the NiCrBSi alloy elements and converted to the corresponding oxides thereafter.…”

Application of Modified Graphene Oxide in Corrosion Protection

“…"Cathodic protection" is mainly used for coatings containing strong, active zinc powder. [118] Graphene uses its electrical conductivity to connect the corrosive medium with Figure 6. Synthesis of IL-GO Nanohybrids.…”