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High-hardness self-lubricating nickel-tungsten-phosphorus composite electroplating solution as well as preparation method, electroplating method and application thereof

A composite electroplating, nickel-tungsten-phosphorus technology, applied in the direction of electrolytic coating, coating, etc., to achieve good stability, reduce wear, and reduce the amount of wear

Pending Publication Date: 2022-04-15
青岛永新表面处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] After nearly 10 years of development, the new environmental protection surface treatment process that replaces electroplating hard chromium has achieved certain results. The industrialized processes include thermal spraying nickel-based alloys, tungsten carbide hard alloys, and carbon-nitrogen low-temperature co-infiltration. , comprehensive performance, implementation process and other reasons, it can only replace the electroplating hard chrome process in some fields, so a universal chrome substitution process is still a hot research topic

Method used

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  • High-hardness self-lubricating nickel-tungsten-phosphorus composite electroplating solution as well as preparation method, electroplating method and application thereof
  • High-hardness self-lubricating nickel-tungsten-phosphorus composite electroplating solution as well as preparation method, electroplating method and application thereof
  • High-hardness self-lubricating nickel-tungsten-phosphorus composite electroplating solution as well as preparation method, electroplating method and application thereof

Examples

Experimental program
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preparation example Construction

[0041] Furthermore, the present invention provides a method for preparing a high-hardness self-lubricating nickel-tungsten-phosphorus composite electroplating solution, which includes uniformly mixing the raw materials of the above-mentioned high-hardness self-lubricating nickel-tungsten-phosphorus composite electroplating solution.

[0042] Specifically, first add part of water to the container, then add complexing agent and stir until dissolved, then add soluble nickel compound, soluble tungsten compound, soluble phosphorus compound and additives and stir until dissolved, and finally add self-lubricating particles and spherical ceramic micropowder, Finally, make up to the specified volume with water, and stir well to suspend evenly.

[0043] In this example, by controlling the order of adding raw materials, the complexing agent and part of the deionized water are stirred until dissolved, and then the soluble nickel compound, soluble tungsten compound, and soluble phosphorus c...

Embodiment 1

[0049] Take the preparation of 1 liter of nickel tungsten phosphorus + carbon fiber + aluminum oxide composite electroplating solution as an example, add 300 ml of deionized water into the first container with a volume of 1 liter, and put 90 g of complexing agent (mass ratio is 1:5 DL-malic acid and sodium citrate) and stir until dissolved, add 210g of nickel sulfate and stir until dissolved, add 30g of sodium tungstate and stir until dissolved; add 20g of phosphorous acid, stir until dissolved, add 15g of carbon fiber and 30g of aluminum oxide, The stirring time is not less than 1 hour, add 0.2g of additives (cerium sulfate and vanadium pentoxide with a mass ratio of 1:3), stir until dissolved, fill the liquid level with deionized water to the 1 liter mark, and complete the electroplating Liquid preparation.

[0050] When using this electroplating solution, keep the plating solution in a stirring state, and control the temperature of the electroplating solution at 70°C; use i...

Embodiment 2

[0052] Take the preparation of 1 liter of nickel tungsten phosphorus + carbon fiber + aluminum oxide composite electroplating solution as an example, add 300 ml of deionized water into the first container with a volume of 1 liter, and put 90 g of complexing agent (mass ratio is 1:3 DL-malic acid and sodium citrate) and stir until dissolved, add 180g of nickel sulfate and stir until dissolved, add 30g of sodium tungstate and stir until dissolved; add 20g of phosphorous acid, stir until dissolved, add 15g of carbon fiber and 30g of aluminum oxide, The stirring time is not less than 1 hour, add 0.2g of additives (cerium sulfate and vanadium pentoxide with a mass ratio of 1:2), stir until dissolved, fill the liquid level with deionized water to the 1 liter scale, and complete the electroplating Liquid preparation.

[0053] The electroplating method is the same as in Example 1.

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Abstract

The invention discloses a high-hardness self-lubricating nickel-tungsten-phosphorus composite electroplating solution as well as a preparation method, an electroplating method and application thereof, and relates to the technical field of electroplating. The high-hardness self-lubricating nickel-tungsten-phosphorus composite electroplating solution comprises the following raw materials by concentration: 180-220 g / L of a soluble nickel compound, 15-20 g / L of a soluble phosphorus compound, 20-40 g / L of a soluble tungsten compound, 5-20 g / L of self-lubricating particles, 20-50 g / L of spherical ceramic micro powder, 0.1-0.3 g / L of an additive, 80-100 g / L of a complexing agent and the balance of water. Wherein the self-lubricating particles comprise at least one of carbon fibers, graphene and graphite; the spherical ceramic micro powder comprises at least one of aluminum oxide, silicon carbide and zirconium oxide. The high-hardness self-lubricating nickel-tungsten-phosphorus composite electroplated layer with excellent wear resistance, self-lubricating performance and corrosion resistance can be obtained.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a high-hardness self-lubricating nickel-tungsten-phosphorus composite electroplating solution, its preparation method, electroplating method and application. Background technique [0002] Hard chrome plating is a traditional processing technology with a history of more than 100 years. It can improve the wear resistance and corrosion resistance of the workpiece at a lower cost. It is widely used in the pharmaceutical industry, printing industry, chemical industry, food industry, aerospace Aviation and automobile industry, petroleum equipment and other industries. However, the chrome plating process is a highly polluting and energy-intensive extensive production process, and the chromium mist and hexavalent chromium-containing wastewater discharged from the chrome plating process are a strong carcinogen. Its production and use process pollute the earth's ecology, and it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/00C25D3/56
Inventor 张玲玲赵汝山马耀伟郝爱国
Owner 青岛永新表面处理有限公司
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