Silicon carbide/electroless nickel composite plating for aluminum substrates.

摘要

The effectiveness of producing a composite coating by suspending micron-sized particles in an electroless nickel bath while plating a 2024T4 aluminum alloy part was studied. The variation in the count of particles trapped in the nickel coating due to changes in the particle size, concentration of the particles in the bath, and the substrate surface texture was also studied. Particle sizes of 1 micron and 10 microns, concentrations of 15 gr/lt and 30 gr/lt, and polished and blasted textures were used. It was found that this technique is an effective way to produce composite coatings rendering a high number of adhered particles. The texture was found to be the most influencing factor in the number of particles adhering to the surface, while the concentration of particles in the bath was found to be the least influencing factor.