Graphene-nickel-phosphorus chemical plating liquid, and preparation method and application thereof

Abstract

The invention discloses a graphene-nickel-phosphorus chemical plating liquid, and a preparation method and an application thereof. Each liter of the graphene-nickel-phosphorus chemical plating liquid comprises 0.25-1g of graphene, 20-25g of nickel sulfate, 15-20g of sodium hypophosphate, 15g of sodium acetate, 8-10g of citric acid, 4ml of lactic acid, 4ml of propionic acid, 41mg of a composite stabilizer, and the balance distilled water; and the composite stabilizer is composed of thiourea, potassium iodate and potassium iodide, and a mass ratio of thiourea to potassium iodate to potassium iodide is 1:20:20. The preparation method of the chemical plating liquid comprises the following steps: sequentially adding graphene, nickel sulfate, sodium hypophosphate, sodium acetate, citric acid, lactic acid, propionic acid and the composite stabilizer into distilled water for dissolving, and adjusting the pH value of the obtained solution to 4.2-5.6 to obtain the graphene-nickel-phosphorus chemical plating liquid. The graphene-nickel-phosphorus chemical plating liquid can be used for plating the surface of a steel alloy workpiece to form a nickel-phosphorus-graphene chemical composite coating having a good wear resistance and a high hardness.

Description

technical field [0001] The invention relates to a graphene nickel-phosphorus electroless plating solution and a preparation method and application thereof, that is, a graphene-nickel-phosphorus composite plating layer is formed on the surface of a steel alloy. Background technique [0002] Electroless plating is the most economical means to enhance the corrosion resistance and wear resistance of materials and prolong the service life of materials. Electroless composite plating is a surface treatment process developed from the original single chemical plating, and has the comprehensive properties of both matrix metal and composite particles. Studies have shown that the added composite particles are beneficial to change the structure and performance of the coating, and different types of particles have different effects on the coating. Researchers have successively developed composite coatings with different particles, such as graphite, diamond, Al 2 o 3 wait. However, th...

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Problems solved by technology

[0004] However, there has been no research on electroless plating solutions containing graphene

[0005] Adding graphene to the electroless plating solution to make a composite coating, such as Hu Qinghua prepared Ni-graphene in nickel sulfate solution by using electroless nickel plating method, using graphene oxide flakes as the substrate, and after characterizing it, found that The mass fraction of Ni deposited on the surface of the graphene sheet is high and highly dispersed, but this method has not been extended to the co-deposition of Ni-graphene onto the substrate material

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