Nickel tungsten single-walled carbon nanotube composite plating solution, coating film and preparation method thereof

A technology of single-walled carbon nanotubes and composite plating solution, which is applied in the direction of electrolytic coatings and coatings, can solve the problems of large residual internal stress of the coating film, affecting the mechanical properties of the film layer, and local corrosion, so as to improve various performances and improve The effect of various properties and good mechanical properties

CN104928732AInactive Publication Date: 2015-09-23中国石油天然气股份有限公司西南油气田分公司天然气净化总厂
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-09-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses nickel tungsten single-walled carbon nanotube composite plating solution, a coating film and a preparation method thereof. SWCNTs having excellent mechanical performance and capable of effectively dispersing are leaded into the plating solution, and are effectively deposited and dispersed in a Ni-W matrix in the electroplating process. A Ni-W-SWCNTs composite coating film is successfully prepared on a carbon steel matrix through a pulse electroplating codeposition method. Nanotubes are dispersed in the Ni-W matrix; and as the competitive relation between crystal nucleation and growth is effectively changed in the codeposition process, and the coating film structure is improved, a deposited film layer becomes more uniform and compact, the intergranular corrosion is weakened, the dispersion path of a corrosion medium is lengthened, the self-corrosion potential is increased, the local corrosion is effectively inhibited, the stability of a passivated film is improved, and the corrosion resistance of the composite coating film is improved.
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Description

technical field

[0001] The invention relates to the technical field of electroplating, in particular to a nickel-tungsten single-wall carbon nanotube composite plating solution, a coating film and a preparation method thereof. Background technique

[0002] At present, the method for preparing Ni-W coating is mainly the traditional Ni-W coating electroplating process, and the main plating solution composition and process parameters are shown in Table 1:

[0003] Table 1

[0004]

[0005] The Ni-W coating preparation process is: sanding → ultrasonic cleaning → degreasing → ultrasonic cleaning → pickling activation → pulse plating → cleaning → post-processing → finished product.

[0006] When the traditional electroplating process is used to prepare Ni-W coatings, the current efficiency is low, the hydrogen evolution is serious, and the electrochemical active sites are few, which leads to the residual internal stress of the coating formed during the deposition process, coar...

Examples

Embodiment 1

[0022] The nickel-tungsten single-walled carbon nanotube composite plating solution of the present invention consists of the following components:

[0023]

[0024] Utilize composite plating solution of the present invention to prepare the method for nickel-tungsten graphene oxide composite coating film as follows:

[0025] Utilize composite plating solution of the present invention to prepare the method for nickel-tungsten single-walled carbon nanotube composite coating film as follows:

[0026] First, the steel sheet is polished with sandpaper, then ultrasonically cleaned, degreased, ultrasonically cleaned again, then pickled and activated, then pulse electroplated, cleaned after electroplating, and the finished product is obtained after post-processing; process parameters in the process of pulse electroplating For: the current density is 0.1A / dm 2 , the pH value is 9, the time is 0.5h, the temperature is 80°C, the power is 500HZ, and the duty cycle is 1.0.

Embodiment 2

[0028] The nickel-tungsten single-walled carbon nanotube composite plating solution of the present invention consists of the following components:

[0029]

[0030] Utilize composite plating solution of the present invention to prepare the method for nickel-tungsten single-walled carbon nanotube composite coating film as follows:

[0031] First, the steel sheet is polished with sandpaper, then ultrasonically cleaned, degreased, ultrasonically cleaned again, then pickled and activated, then pulse electroplated, cleaned after electroplating, and the finished product is obtained after post-processing; process parameters in the process of pulse electroplating For: the current density is 10A / dm 2 , the pH value is 6, the time is 3h, the temperature is 50°C, the power is 1500HZ, and the duty cycle is 0.1.

Embodiment 3

[0033] The nickel-tungsten single-walled carbon nanotube composite plating solution of the present invention consists of the following components:

[0034]

[0035] Utilize composite plating solution of the present invention to prepare the method for nickel-tungsten single-walled carbon nanotube composite coating film as follows:

[0036] First, the steel sheet is polished with sandpaper, then ultrasonically cleaned, degreased, ultrasonically cleaned again, then pickled and activated, then pulse electroplated, cleaned after electroplating, and the finished product is obtained after post-processing; process parameters in the process of pulse electroplating For: the current density is 5A / dm 2 , the pH value is 8, the time is 2h, the temperature is 70°C, the power is 1000HZ, and the duty cycle is 0.5.