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Chemical plating solution for preparing composite coating resistant to fretting damage and chemical plating method thereof

A technology of chemical plating solution and composite coating, which is applied in the direction of liquid chemical plating, coating, metal material coating technology, etc., can solve the problems of not having the function of anti-friction and wear resistance, and achieve good resistance to fretting damage and corrosion , Strong practicability and stable preparation process

Inactive Publication Date: 2006-09-06
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The self-lubricating coating in the prior art has good anti-friction performance under certain specific environmental conditions, but it does not have the function of anti-friction and wear resistance under the environmental conditions of fretting friction. Composite coatings damaged by dynamic friction have not been reported in the literature

Method used

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  • Chemical plating solution for preparing composite coating resistant to fretting damage and chemical plating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of electroless plating solution for preparing anti-fretting friction damage composite coating, the composition and content of every 1 liter (L) of chemical plating solution are:

[0034] Nickel Sulfate NiSO 4 ·7H 2 O 28g,

[0035] Ethylenediamine NH 2 CH 2 CH 2 NH 2 55g,

[0036] Sodium borohydride (NaBH) 4 0.2g,

[0037] Sodium hydroxide NaOH 40g,

[0038] Thallium nitrate TlNO 3 0.1g,

[0039] Graphite fluoride (CF) n 1g.

[0040] The preparation method of above-mentioned electroless plating solution is:

[0041] 1. Weigh the metered nickel sulfate (NiSO 4 ·7H 2 O), ethylenediamine (NH 2 CH 2 CH 2 NH 2 ), sodium borohydride [(NaBH) 4 ], sodium hydroxide (NaOH), thallium nitrate (TlNO 3 ), respectively dissolved with a small amount of water;

[0042] 2. Weigh the metered graphite fluoride [(CF) n ] (particle diameter is 1~5 μ m), make hydrophilic and positively charged surface treatment with catio...

Embodiment 2

[0047] A kind of electroless plating solution for preparing anti-fretting friction damage composite coating, the composition and content of every 1 liter (L) of chemical plating solution are: nickel chloride (NiCl 2 ·6H 2 O) 32g, sodium citrate (Na 3 C 6 h 5 o 7 2H 2 O) 60g, potassium borohydride (KBH) 0.5g, potassium hydroxide (KOH) 50g, thallium nitrate (TlNO 3 )0.12g, graphite fluoride (CF) n(particle size 1-5μm) 2g, add water (preferably distilled water or deionized water) to 1 liter. The immersion plating temperature is 85°C, the pH value is 13, and the plating time is 10 to 60 minutes. Others are the same as in Example 1, omitted.

Embodiment 3

[0049] A kind of electroless plating solution for preparing anti-fretting friction damage composite coating, the composition and content of every 1 liter (L) of chemical plating solution are: nickel sulfate (NiSO 4 ·7H 2 O) 35g, sodium citrate (Na 3 C 6 h 5 o 7 2H 2 O) 62g, potassium borohydride (KBH) 1.0g, potassium hydroxide (KOH) 62g, thallium nitrate (TlNO 3 )0.15g, graphite fluoride (CF) n (particle size 1-5μm) 5g, add water (preferably distilled water or deionized water) to 1 liter. The immersion plating temperature is 88°C, the pH value is 14, and the plating time is 10 to 60 minutes. Others are the same as in Example 1, omitted.

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Abstract

The invention relates the method for preparing antifriction damnification composite deposite chemical plating liquid, comprising the following characters: 28-35g / L nickelous sulfate, 55-62g / L ethanediamine, 0.2-1.0 g / L potassium borohydride, 40-62g / L caustic soda, 0.1-0.15g / L thallium sulfate, 1-5g / L graphite fluoride; cleaning and activating the surface of work, putting the work into chemical plating liquid at 12-14 PH and 80-88Deg.C for 10-60 min. The Ni-Tl-B / (CF)n the composite deposite made by the said method has the advantages of homogeneous thickness, good association, high hardness, strong blocking resistance and good corrosivity.

Description

technical field [0001] The invention belongs to an electroless plating solution composition and an electroless plating method, in particular to an electroless plating solution and an electroless plating method for preparing a composite coating resistant to fretting friction damage. Background technique [0002] Because the coating prepared by electroless nickel plating has excellent characteristics such as wear resistance, corrosion resistance, uniform coating and good magnetic properties, it has long received great attention from the industry and has been used in machinery, electronics, instrumentation, light industry, transportation, etc. Widely used in transportation and other industries. The self-lubricating coating in the prior art has good anti-friction performance under certain specific environmental conditions, but it does not have the function of anti-friction and wear resistance under the environmental conditions of fretting friction. Composite coatings damaged by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/16C23C18/18C23C18/48C22F1/00C23F17/00
Inventor 刘继光陈奎儒申蓉蓉张祖军
Owner SOUTHWEAT UNIV OF SCI & TECH
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