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A method for high-efficiency and low-cost thermal reduction nickel plating on the surface of silicon carbide particles

A silicon carbide particle, low-cost technology, applied in the field of silicon carbide surface modification, can solve the problems affecting the application of nickel coating on the surface of silicon carbide powder, complicated processing process, difficult to handle the plating solution, etc. The effect of reducing risk and saving cost

Active Publication Date: 2021-07-30
GUIZHOU EDUCATION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the precious metal palladium chloride or silver nitrate used in silicon carbide activation and sensitization pretreatment has greatly increased the production cost, and the treatment process is more complicated; at the same time, the plating solution produced by the electroless plating industry is difficult to handle, and it is difficult to deal with it. The environment causes certain pollution, which affects the application of nickel coating on the surface of silicon carbide powder

Method used

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  • A method for high-efficiency and low-cost thermal reduction nickel plating on the surface of silicon carbide particles
  • A method for high-efficiency and low-cost thermal reduction nickel plating on the surface of silicon carbide particles
  • A method for high-efficiency and low-cost thermal reduction nickel plating on the surface of silicon carbide particles

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Dissolve 200g of basic nickel carbonate at room temperature in 250mL of ammonia water, add 500g of polyacrylamide solution with a mass fraction of 5% under the action of stirring and stir to dissolve completely, and under the action of strong stirring Slowly add 1Kg of silicon carbide particles, so that the silicon carbide powder particles are fully infiltrated and dispersed in the solution, ensuring that the surface of the silicon carbide particles is covered by the dissolved basic nickel carbonate. After sealing and storing the fully soaked silicon carbide powder particles, let it stand for 6 hours to further fully dissolve the basic nickel carbonate in the ammonia solution to ensure the integrity of the coating. Take fully wrapped silicon carbide particles, dry them at 80°C for 2 hours, and obtain pretreated silicon carbide powder particles after preliminary crushing.

[0040] (2) Take the pretreated silicon carbide powder sample obtained above and place it in a ...

Embodiment 2

[0045] (1) Dissolve 100g of basic nickel carbonate at room temperature in 250mL of ammonia water, add 500g of polyacrylamide solution with a mass fraction of 5% under the action of stirring and stir to dissolve completely, and under the action of strong stirring Slowly add 1Kg of silicon carbide particles, so that the silicon carbide powder particles are fully infiltrated and dispersed in the solution, ensuring that the surface of the silicon carbide particles is covered by the dissolved basic nickel carbonate. After sealing and storing the fully soaked silicon carbide powder particles, let it stand for 6 hours to further fully dissolve the basic nickel carbonate in the ammonia solution to ensure the integrity of the coating. Take fully wrapped silicon carbide particles, dry them at 80°C for 2 hours, and obtain pretreated silicon carbide powder particles after preliminary crushing.

[0046] (2) Take the pretreated silicon carbide powder sample obtained above and place it in a ...

Embodiment 3

[0048] (1) Dissolve 300g of basic nickel carbonate at room temperature in 250mL of ammonia water, add 500g of polyacrylamide solution with a mass fraction of 5% under the action of stirring and stir to dissolve completely, and under the action of strong stirring Slowly add 1Kg of silicon carbide particles, so that the silicon carbide powder particles are fully infiltrated and dispersed in the solution, ensuring that the surface of the silicon carbide particles is covered by the dissolved basic nickel carbonate. After sealing and storing the fully soaked silicon carbide powder particles, let it stand for 6 hours to further fully dissolve the basic nickel carbonate in the ammonia solution to ensure the integrity of the coating. Take fully wrapped silicon carbide particles, dry them at 80°C for 2 hours, and obtain pretreated silicon carbide powder particles after preliminary crushing.

[0049] (2) Take the pretreated silicon carbide powder sample obtained above and place it in a ...

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Abstract

The invention discloses a method for high-efficiency and low-cost thermal reduction nickel plating on the surface of silicon carbide particles, comprising: using basic nickel carbonate, polyacrylamide and ammonia water as surface modifiers to carry out surface modification treatment on silicon carbide powder particles to obtain silicon carbide powder particles coated with basic nickel carbonate; place the surface-modified silicon carbide powder in a hydrogen reduction furnace for heating and reduction treatment to obtain silicon carbide powder particles coated with nickel coating on the surface. The present invention adopts the reduction plating method to omit the coarsening process of strongly corrosive medicines such as hydrofluoric acid, nitric acid or sodium hydroxide adopted in ordinary chemical plating, and adopts the thermal reduction method of the present invention to also solve the problem of traditional chemical plating Difficult to deal with the plating solution after plating and serious environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of silicon carbide surface modification, and in particular relates to a high-efficiency and low-cost thermal reduction nickel plating method on the surface of silicon carbide particles. Background technique [0002] As a kind of ceramic reinforcement phase, silicon carbide particles are often used as reinforcement phase particles in the preparation of metal matrix composites, which effectively solves the problem of high fiber cost of fiber reinforced metal matrix composites, and the material is isotropic, and the preparation process Simple and low cost, it is widely used in aerospace, defense, automobile, high-speed rail and other industries. [0003] Silicon carbide particles as a reinforcing phase are ceramic phase particles with high hardness, high melting point and strong corrosion resistance, which are quite different from metal matrix alloys. Therefore, when preparing silicon carbide reinforced metal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/565C04B35/628
CPCC04B35/565C04B35/62842C04B2235/405
Inventor 任俊鹏王毓赵君夏卉芳
Owner GUIZHOU EDUCATION UNIV
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