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

A composite coating, ni-p-cnt technology, applied in the application field of chemical plating, can solve the problem that the dispersion is not well solved, the stability of the plating solution, and the co-deposition mechanism of nanoparticles and metal ions has no perfect theory. Explanation and other issues to achieve the effect of superior performance, excellent mechanical properties, good toughness

Inactive Publication Date: 2013-05-08
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 coati

Method used

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

Examples

Experimental program
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Example Embodiment

[0049] Example 1:

[0050] The carbon nano-tube (CNT, hereinafter referred to as CNT) raw material is placed in concentrated sulfuric acid and boiled for 6 hours, and finally washed with deionized water to neutrality, filtered, and placed in a drying oven at 80°C for drying.

Example Embodiment

[0051] Example 2:

[0052] Place the CNT raw material in concentrated nitric acid and boil it for 6 hours, and finally wash it with deionized water to neutrality, filter and put it into a drying box for drying at 80°C.

Example Embodiment

[0053] Example 3:

[0054] The CNT raw materials were boiled in concentrated sulfuric acid and concentrated nitric acid with a volume fraction of 3:1 for 6 hours, and finally washed with deionized water to neutrality, filtered and placed in a drying cabinet for drying at 80°C.

[0055] figure 2 TEM pictures of CNTs before and after acid treatment in Example 3. From figure 2 (A), figure 2 (C) It can be seen that the CNT winding and agglomeration phenomenon after acid treatment is significantly reduced. Simultaneous comparison figure 2 (B), figure 2 (D) It is not difficult to find that after pickling and oxidation, black groups appeared on the surface of the carbon nanotubes, which were later confirmed to be hydroxyl or carboxyl groups.

[0056] image 3 The infrared spectrum pictures of carbon nanotubes (CNT) before and after the acid treatment in Example 3. by image 3 It can be seen that no matter before or after treatment with concentrated acid, the infrared spectrum of carb...

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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...

Claims

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Application Information

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IPC IPC(8): C23C18/36
Inventor 孙万昌周泉侯嵬玮
Owner XIAN UNIV OF SCI & TECH
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