1, Cathodic polarization electroplating:
For the electrolytic solution which the cathode polarization is small, should strive to increase the cathodic polarization factors. Directly or indirectly contribute to increase cathodic polarization factors, such as selecting the appropriate complexing agent and additives, both can change coating film dispersion and coverage capability.
2, Electrolyte solution conductivity:
On large resistance electrolytic solution, a stronger conductivity electrolyte may be appropriate to add. When the electroplating solution has a larger cathodic polarization, to enhance conductivity can significantly improve dispersion and coverage capability. If the polarization dispersion is minimal, so the impact to dispersion capability is not big.
3, Cathode current efficiency:
Improving cathode current efficiency, can increase plating solution capacity of dispersion and coverage.
4, Organism surface condition:
To improve organism surface smoothness, to use a short shock waves, to increase hydrogen overpotential on organism, can eliminate organism side effects to dispersion and capacity.
5, Geometric factors:
Using auxiliary cathode and pictograph anode in actual production, and using methods: such as rationally regulate distance between the anode and cathode as far as possible to elimination geometric factors impact to electrolyte dispersion capability. But chrome electrolytic solution is special, which is a strong oxidizing acid electrolytic solution, and is a worst dispersion capability in using electrolytic solution. When in chromium plating, in order to improve the dispersion ability, often from the outside perspective of electrochemistry properties, make the using of protective cathode, auxiliary anode and nonmetal shield and reasonable to adjust distance between the electrodes and so on, to make it in the best current distribution.

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