Hosseini, M. G., et al. Surface and Coatings Technology, 2016, 298, 114-120.
A series of nanocomposite coatings were successfully prepared by co-deposition of polychlorotrifluoroethylene (PCTFE) particles and nickel-tungsten (Ni-W) coatings through electrodeposition. The experimental results show that within a certain amount, with the addition of PCTFE particles in the Ni-W matrix, the corrosion potential moves significantly toward the inert direction, the corrosion current density decreases, the charge transfer resistance increases, and the double-layer capacitance value decreases.
Preparation of composite coatings
· A copper sheet substrate with a surface area of 1 cm2 was utilized and underwent pre-treatment through polishing, degreasing, and cleaning. Following this, the substrates were rinsed in distilled water and then activated in 10% H2SO4 for 60s at room temperature in preparation for the electrodeposition process.
· Nickel sulfate (NiSO4·6H2O, 99.99%) served as the nickel source, potassium sodium tartrate tetrahydrate (C4H4KNaO6·4 H2O) as a complexing agent, and sodium tungstate dehydrate (Na2WO4·2 H2O) as the source of tungsten.
· To ensure better dispersion of PCTFE particles (0.02-0.2 μm), a small amount of a proprietary surfactant (sodium dodecyl benzene sulfonate, C18H29NaO3S, 99.99%) was added to the bath. Throughout the plating process, the bath was stirred using a magnetic stirrer at 350 rpm, while the pH and temperature of the bath were kept within ±0.2 units and ±0.1°C, respectively.
Zou, Jiajia, et al. Frontiers in Materials, 2022, 9, 824155.