NICKEL-DIAMOND COATING TECHNOLOGY USING PULSE ELECTROLYSIS

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Description of the project: Reverse and pulse electrolysis is used to apply a diamond-containing composite layer to the body of the cutting tool.

The current density when receiving composite coatings is 5-30 A / dm2; the duration of the cathode impulse is 5-50 ms, the coating thickness is up to 400 microns; the size of diamond grains in the coating is up to 400 microns.

Advantages: The use of non-stationary electrolysis in the production of composite diamond-containing electroplated nickel coatings allows:

  • deposit coatings 5-10 times faster than traditional electrolysis
  • to obtain various types of coatings by changing only the electrical parameters of electrolysis

The technology makes it possible to obtain coatings without brightening additives in the electrolyte. Decrease in rejects when applying coatings by 3–5 times, increase in the deposition rate of coatings by 5–10 times, the payback period for the application of this technology is less than a year.