Method for preparing Ni-P-CNT (Carbon nanotube) nano composite coating

Abstract

The invention discloses a method for preparing a Ni-P-CNT (Carbon nanotube) nano composite coating. The method comprises the following steps of: performing acid oxidation treatment on a carbon nano-tube (CNT) before coating, utilizing an ultrasonic dispersion technology and adding a proper amount of surfactant into a chemical plating solution, so that the CNT is uniformly dispersed in the chemical plating solution. A proper chemical plating solution formula is selected, a proper amount of surfactant is added, the coating solution is not decomposed and precipitated in the chemical plating process through an intermittent magnetic stirring method, the chemical and physical characteristics are stable and reliable, the nano composite coating which is high in hardness, wear resistance and corrosion resistance is prepared compared with the traditional Ni-P coating, and the problem that the CNT is dispersed is solved.

Description

technical field [0001] The invention belongs to the application field of electroless plating, and relates to a new method for preparing a Ni-P-CNT nanocomposite coating, which is mainly applied to wear-resistant and corrosion-resistant functional coatings and decorative coatings of various metal parts and materials . Background technique [0002] Nano surface engineering is based on nanomaterials and other low-fiber non-equilibrium materials, through specific processing techniques and means, to strengthen, modify, ultra-fine processing or endow the surface with new functions on the solid surface system engineering. In short, nano surface engineering is to intersect, compound, synthesize and develop applications of nanomaterials and nanotechnology with surface engineering. [0003] The electroless plating method is used to add nanoparticles to the ordinary plating solution, and the composite coating obtained by co-depositing the nanoparticles and the matrix metal under stirr...

AI Technical Summary

Problems solved by technology

[0006] (1) There is no perfect theoretical explanation for the co-deposition mechanism of nanoparticles and metal ions in nanocomposite coatings;

[0007] (2) The stability of the plating solution

[0008] (3) Dispersion of nanoparticles in composite bath and composite coating

The methods to solve the agglomeration of nanoparticles usually include mechanical stirring, magnetic stirring, gas stirring and ultrasonic dispersion. At present, the most effective way is to add surfactant, but the problem of its dispersion has not been well solved;

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