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Preparation method of attapulgite modified nickel-based nano ceramic particle composite coating

A technology of nano-ceramic particles and composite coatings, applied in coatings, electrolytic coatings, etc., can solve the problems of reducing the amount of nano-particle deposition and increasing the cost of coatings, and achieve the effects of reduced grain size, good compactness, and a wide range of sources

Inactive Publication Date: 2013-09-11
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By increasing the cathodic current density in the electroplating process, the deposition rate of the matrix metal increases, and the grains of the coating are refined, but the deposition amount of nanoparticles decreases; adding rare metal compounds to the plating solution refines the grains of the coating, which obviously increases the preparation of the coating. the cost of

Method used

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  • Preparation method of attapulgite modified nickel-based nano ceramic particle composite coating
  • Preparation method of attapulgite modified nickel-based nano ceramic particle composite coating
  • Preparation method of attapulgite modified nickel-based nano ceramic particle composite coating

Examples

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Effect test

Embodiment 1

[0031] The preparation method of the attapulgite-modified nickel-based nano-ceramic particle composite coating comprises the following steps:

[0032] A) Basic electroplating nickel solution preparation: NiSO 4 ·6H 2 O, H 3 BO 3 and NiCl 2 ·6H 2 O is mixed evenly and is prepared into 2L plating solution, obtains basic electroplating nickel solution;

[0033] B) Nanoparticle pretreatment: Al 2 o 3 The nano-ceramic particles were ultrasonically oscillated for 30 minutes, and then mechanically stirred for 1 hour. The attapulgite nanoparticles were ultrasonically oscillated for 30 minutes before plating, and then mechanically stirred for 1 hour;

[0034] C) Composite plating solution preparation: the pretreated Al in step B) 2 o 3 Nano-ceramic particles are added to the basic electroplating nickel solution in step A), Al 2 o 3 The concentration of nano-ceramic particles is 6g / L; perform ultrasonic vibration treatment for 0.5h while mechanically stirring, and at the same...

Embodiment 2

[0039] Embodiment 2 is a comparative example as embodiment 1, and the difference is that attapulgite nanoparticles are not added, such as figure 1 As shown, the Ni / Al prepared without attapulgite in the bath 2 o 3 Surface micromorphology of nanocomposite coatings.

Embodiment 3

[0041] The specific steps are the same as in Example 1, except that TiC nano ceramic particles are added in the plating solution instead of Al2 o 3 Nano-ceramic particles, the base material is Q235, and the composition of the electroplating solution is NiSO 4 .·6H 2 O 250g / L, H 3 BO 3 40g / L, NiCl 2 ·6H 2 O 50g / L, the concentration of attapulgite nano-particles is 0.5g / L, the size of TiC nano-ceramic particles is 40nm, the addition amount is 9g / L, the coating thickness reaches 210μm, and the electroplating is completed, and finally the surface is dense and the hardness is high. , Ni / TiC nanocomposite coating with good wear resistance, such as Figure 4 Shown is the microscopic morphology of the surface of the Ni / TiC nanocomposite coating prepared after adding 0.5g / L attapulgite nanoparticles to the plating solution.

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Abstract

The invention discloses a preparation method of an attapulgite modified nickel-based nano ceramic particle composite coating. The preparation method comprises the following steps of: (A) preparation of a basic electro nickeling solution preparation: uniformly mixing NiSO4.6H2O, H3BO3 and NiCl2.6H2O to prepare a plating solution which is the basic electro nickeling solution; (B) pretreatment of nano-particles: performing ultrasonic oscillation on attapulgite nano-particles for 30 minutes before plating and then mechanically stirring for 0.5-1 hour; (C) preparation of a composite electroplating solution preparation: adding the attapulgite nano-particles subjected to the ultrasonic oscillation in the step (B) into the basic electro nickeling solution, performing ultrasonic oscillation for 30 minutes, and mechanically stirring for 0.5-1 hour to obtain the composite electroplating solution; and (D) preparation of a composite coating: electrifying, stopping electrifying when the coating reaches a required thickness, taking a test sample out, and ending electroplating to obtain the composite coating. By adopting the technical scheme of the invention, the nano particles can be promoted to be well dispersed in the electroplating solution to ensure that the grains of the composite coating are finer, and the micro-hardness and wear resistance of the composite coating are improved.

Description

technical field [0001] The invention belongs to the technical field of composite coating preparation, in particular to the field of preparation of nanometer insoluble solid particle composite coating, in particular to a preparation method of attapulgite-modified nickel-based nano ceramic particle composite coating. Background technique [0002] It is well known that corrosion and wear of general materials mostly occur on the surface. Effective protection measures can reduce corrosion loss by at least 15% to 35%, and reduce wear loss by about 1 / 3. Surface coating technology is an effective means of high quality, high efficiency and improving economic benefits. As one of the surface coating technologies, the composite electroplating technology can improve the corrosion resistance, wear resistance and oxidation resistance of the metal surface due to its advantages of simple equipment, convenient operation, fast speed, low temperature, low price and easy control. Decorative ap...

Claims

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Application Information

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IPC IPC(8): C25D15/00
Inventor 王红星
Owner NANJING INST OF TECH
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