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A high-brightness composite nickel plating layer

A technology of composite plating and nickel plating, applied in the direction of coating, silicon oxide, silicon dioxide, etc., to ensure the brightness and flatness, reduce the friction coefficient and improve the hardness

Active Publication Date: 2022-05-20
深圳市康恒电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sliding surface of the internal combustion engine cylinder block requires properties such as wear resistance, heat resistance, mechanical scratch resistance and corrosion resistance, and ordinary gray cast iron cylinders are difficult to meet the above requirements

Method used

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  • A high-brightness composite nickel plating layer
  • A high-brightness composite nickel plating layer
  • A high-brightness composite nickel plating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A method for preparing modified particles for composite electroplating. The modified particles are sulfide coated with silicon oxide. The specific preparation method is as follows.

[0053] (1) Put 1.5 g of molybdenum sulfide with a particle size of 75 nm and a purity greater than 99.8% in a three-necked flask, and add 45 mL of H 2 SO 4 and 10 mL of HNO with a mass fraction of 65%-67% 3 , sealed magnetic stirring for 15 min, heated in a water bath at 100 o C was refluxed for 4 h, washed with deionized water until neutral, and placed in an air furnace for 60 o C drying for 12 h to obtain mixed acid oxidation treated molybdenum sulfide particles.

[0054] (2) Weigh 1g of the molybdenum sulfide particles treated in step (1) into the three-necked flask, add 1ml of triethylamine in the there-necked flask, then slowly add dropwise and measure 50ml, 5mmol / L of azo-grafted agent solution, N 2 Protection, stirring at room temperature for 18h, washing with methanol multiple ...

Embodiment 2

[0059] A method for preparing modified particles for composite electroplating. The modified particles are sulfide coated with silicon oxide. The specific preparation method is as follows.

[0060] (1) Put 2 g of molybdenum sulfide with a particle size of 75 nm and a purity greater than 99.8% in a three-necked flask, and add 47.5 mL of H with a mass fraction of 98% 2 SO 4 and 12.5 mL of HNO with a mass fraction of 65%-67% 3 , sealed magnetic stirring for 17.5min, heated in a water bath at 100 o C was refluxed for 5 h, washed with deionized water until neutral, and placed in an air furnace at 65 o C drying for 15 h to obtain mixed acid oxidation treated molybdenum sulfide particles.

[0061] (2) Weigh 1.25g of the molybdenum sulfide particles treated in step (1) into the three-necked flask, add 1.5ml triethylamine into the three-necked flask, then slowly add dropwise and then measure 62.5ml, 10mmol / L azo Grafting agent solution, N 2 protection, stirring at room temperature ...

Embodiment 3

[0066] A method for preparing modified particles for composite electroplating. The modified particles are sulfide coated with silicon oxide. The specific preparation method is as follows.

[0067] (1) Put 2.5 g molybdenum sulfide with a particle size of 75 nm and a purity greater than 99.8% in a three-necked flask, and add 50 mL of H 2 SO 4 and 15 mL of HNO with a mass fraction of 65%-67% 3 , sealed magnetic stirring for 20 min, heated in a water bath at 100 o C was refluxed for 6 h, washed with deionized water until neutral, and placed in an air furnace for 70 o C drying for 18 h to obtain mixed acid oxidation treated molybdenum sulfide particles.

[0068] (2) Weigh 1-1.5g of molybdenum sulfide particles treated in step (1) into the three-necked flask, add 2ml of triethylamine into the three-necked flask, then slowly add dropwise and measure 75ml, 15mmol / L of azo Grafting agent solution, N 2 protection, stirring at room temperature for 24 hours, washing with methanol mul...

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Abstract

The invention provides a high-brightness composite nickel plating layer. The plating solution includes highly dispersed inorganic nanoparticles, the particles are molybdenum sulfide coated with silicon oxide, and the addition of lubricating inorganic particles effectively improves the coating. Excellent hardness and reduced friction coefficient, effectively maintain the brightness of the coating through the composite brightener.

Description

technical field [0001] The invention belongs to the field of electroplating, and relates to an inorganic modified particle composite bright nickel coating. Background technique [0002] Wear and corrosion are the main forms of functional failure of materials. Friction and wear is one of the main reasons for the failure of mechanical equipment. About 80% of the failure of parts is caused by various forms of wear. Wear not only consumes energy and materials, but also accelerates equipment scrapping and leads to frequent replacement of parts, which has a great impact on the economy. Corrosion and rust cause resources, energy waste and economic losses, and even endanger personal safety in severe cases. Statistics show that about 1 / 3 of the energy in machinery manufacturing is directly or indirectly consumed by losses caused by wear and corrosion. In order to improve the high temperature corrosion resistance and wear resistance of metal surfaces, many methods of strengthening th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D15/00C25D3/12C01G39/06C01B33/12B82Y40/00B82Y30/00
CPCC25D15/00C25D3/12C01G39/06C01B33/12B82Y40/00B82Y30/00C01P2004/80C01P2006/80C01P2004/04C01P2004/03
Inventor 赵琳琳
Owner 深圳市康恒电子有限公司
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