1. Decrease porosity; the formation rate of crystal nuclei exceeds the growth rate, promoting the refinement of crystal nuclei. 2. Enhance adhesion; the breakdown of the passivation film facilitates a robust bond between the substrate and the coating. 3. Improve coverage and dispersion capabilities; high cathodic negative potential allows deposition on areas that are typically passivated in conventional electroplating, reducing the "burning" and "branching" defects caused by excessive ion consumption on prominent areas of complex-shaped parts. This can reduce the thickness of a given characteristic coating (such as color, pore-free) to 1/3 to 1/2 of the original, saving raw materials. Aeronautical Power Supply
4. Reduces internal stress in coatings, improves lattice defects, impurities, voids, nodules, etc., making it easier to achieve crack-free coatings and reduce additives. 5. Beneficial for obtaining alloy coatings with stable composition. 6. Enhances anode dissolution without the need for anode activators. 7. Improves the mechanical and physical properties of coatings, such as increasing density, reducing surface and bulk resistance, enhancing toughness, wear resistance, and corrosion resistance, while also controlling the hardness of the coating. 400Hz power supply.
