A method for dispersing ceramic particles in the process of composite plating on the surface of metal materials

A technology of ceramic particles and metal materials, applied in metal material coating process, electrolytic coating, liquid chemical plating and other directions, can solve problems such as unsatisfactory effect, and achieve the effect of benefiting stability, coating performance improvement, and prolonging service life

Active Publication Date: 2019-01-11
有研金属复材技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the use of surfactants or organic polymers to obtain dispersion or stabilization of particles in the plating solution is often unsatisfactory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1 Preparation of electroless nickel-cobalt plating solution: the plating solution contains nickel ions, cobalt ions and hypophosphite, adjust the pH to 8.5-10, adjust the temperature of the plating solution to 75-93°C, and prepare for electroless plating.

[0018] 2 Preparation of ceramic particle slurry: Weigh silicon nitride ceramic particles, add water to obtain a 5g / L slurry, add ammonia water at 0.5g / L, stir ultrasonically, and mix evenly to obtain a uniform silicon nitride ceramic particle slurry body.

[0019] 3. Plating: Add the silicon nitride ceramic particle slurry into the plating solution, put it into the aluminum-based composite material to be plated, and perform electroless plating. After plating for 4 hours, there was no sign of decomposition in the electroless plating solution. The plating solution can be used repeatedly and has good plateability. After the plating is finished, the plated parts are taken out, rinsed and dried.

[0020] 4 Coating perf...

Embodiment 2

[0022] 1 Preparation of electroless nickel-cobalt plating solution: the plating solution contains nickel ions, cobalt ions and hypophosphite, adjust the pH to 8.5-10, adjust the temperature of the plating solution to 75-93°C, and prepare for electroless plating.

[0023] 2 Preparation of ceramic particle slurry: Weigh silicon nitride ceramic particles, add water to obtain a 500g / L slurry, add ammonia water at 500g / L, ultrasonically stir, and mix evenly to obtain a uniform silicon nitride ceramic particle slurry .

[0024] 3. Plating: Add the silicon nitride ceramic particle slurry into the plating solution, put it into the aluminum-based composite material to be plated, and perform electroless plating. After plating for 4 hours, there was no sign of decomposition in the electroless plating solution. The plating solution can be used repeatedly and has good plateability. After the plating is finished, the plated parts are taken out, rinsed and dried.

[0025] 4 Coating perfor...

Embodiment 3

[0027] 1 Preparation of electroless nickel-cobalt plating solution: the plating solution contains nickel ions, cobalt ions and hypophosphite, adjust the pH to 8.5-10, adjust the temperature of the plating solution to 75-93°C, and prepare for electroless plating.

[0028] 2 Preparation of ceramic particle slurry: Weigh silicon nitride ceramic particles, add water to obtain a 10g / L slurry, add ammonia water at 15g / L, stir ultrasonically, and mix evenly to obtain a uniform silicon nitride ceramic particle slurry .

[0029] 3. Plating: Add the silicon nitride ceramic particle slurry into the plating solution, put it into the aluminum-based composite material to be plated, and perform electroless plating. After plating for 4 hours, there was no sign of decomposition in the electroless plating solution. The plating solution can be used repeatedly and has good plateability. After the plating is finished, the plated parts are taken out, rinsed and dried.

[0030] 4 Coating performa...

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Abstract

The invention discloses a dispersion method for ceramic particles in the process of metal material surface composite plating and belongs to the technical field of metal surface treatment. According to the dispersion method for the ceramic particles in the process of metal material surface composite plating, an ammonium type compound is added during preparation of a ceramic particle slurry to be used as a dispersion agent; through the combination of NH4+ and the ceramic particles, the ceramic particles can be evenly distributed in a plating solution and stably suspend, plating of the ceramic particles is reduced or avoided, the bearing capacity of the plating solution is not influenced, the situation that because the ceramic particles are added to the plating solution, the plating solution is decomposed in advance is avoided, the service life of the plating solution is prolonged, and the plating cost is reduced; and meanwhile, the generated NH4+ structure is one of metal ion complexing components in the plating solution, the improvement on the stability of heavy metal ions in the plating solution is facilitated, the performance of a plating layer is prevented from being influenced, and the improvement on the performance of the plating layer is facilitated.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, in particular to a method for dispersing ceramic particles in the composite plating process on the surface of metal materials. Background technique [0002] Composite plating is the introduction of ceramic particles into the metal coating, which combines the unique physical and chemical properties of ceramic particles with the properties of the metal coating to form a composite metal coating technology with high hardness, wear resistance and wear reduction, and is widely used in high wear-resistant environments. . Due to the incompatibility of the ceramic particles with the aqueous solution, the ceramic particles either precipitate or agglomerate in the aqueous solution, resulting in uneven dispersion of the particles in the coating structure, or the particle content in the coating structure cannot reach the expected effect. At the same time, since the ceramic particles will also...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D15/00C23C18/50C25D3/56
CPCC23C18/1662C23C18/50C25D3/562C25D15/00
Inventor 赵月红
Owner 有研金属复材技术有限公司
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