Nano WC - Ni Composite Coating Preparation Method

The present invention provides a nano tungsten - nickel composite coating preparation, plating technology in the field is interdisciplinary and nano materials. Characterized in that:

1) The coating consists of a matrix consisting of nickel and firmly embedded in one of the nano-tungsten carbide particles;

2) The plating solution is: NiSO4.7H2O :130-200 g / l, NiCl2: 30 ~ 50 g / l, tungsten carbide nano :30-80 g / l, CoSO4: 2 ~ 10 g / l, H3BO3: 30 - 50 g / l saccharin 3-5 g / l, FK-370, low foam wetting agent, 2-5 g / l, FK-287A Main optical agent 1-3 g / l, FK-287B adjuvants: 2-4 g / l, FK-287C stabilizer :10-20 g / liter;

3) Plating process conditions: CoSO4 agent to promote coprecipitation of 2 to 10 g / l; 60 to 90 rev / min speed intermittent stirring;

4) Temperature of the plating solution 25-35 ℃; cathode current density of 15-25 On / dm2; pH of the plating solution is 3 to 5;

5) Anode area ratio of 2:3.

The present invention provides nano WC - Preparation of nickel composite coatings with low cost, high utilization of nano-powders, nano-tungsten carbide powder does not decay in the preparation and processing of nano-powders, etc. without prior reunion.

 

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