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Composite plating layer containing carbon nano shallot ball shaped nanomaterial and its preparation method

A technology of nanomaterials and carbon nano-onions, which is applied in the direction of metal material coating process, coating, liquid chemical plating, etc., can solve problems that have not been reported, and achieve high wear resistance and good anti-friction performance

Inactive Publication Date: 2006-10-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, so far, there has been no report on the preparation of wear-resistant and anti-friction chemical composite coatings with carbon nano-onion spherical nano-materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The Ni-P composite coating containing carbon nano-onion spherical nanomaterials was plated on the 45# steel substrate by electroless plating. The plating method is as follows: nickel sulfate 24g / L, sodium hypophosphite 23g / L, lactic acid 5mL / L, sodium acetate 12g / L, pH=5.5, temperature 90°C, carbon nano-onion 6g / L, time 3 hours. The results of friction and wear experiments show that the wear amount of the Ni-P composite coating containing carbon nano-onions is 1 / 5 of that of Ni-P coating and 1 / 2 of Ni-P-graphite, and its friction coefficient is 0.029, while Ni-P and Ni-P Ni-P-graphite friction coefficients are 0.11 and 0.07. It is proved that the Ni-P composite coating containing carbon nano-scallions has high wear resistance and antifriction performance.

Embodiment 2

[0028] The Ni-W-P composite coating containing carbon nano-onion spherical nanomaterials was plated on the 45# steel substrate by electroless plating. The plating method is as follows: nickel sulfate 25g / L, sodium tungstate 65g / L, sodium hypophosphite 22g / L, sodium citrate 100g / L, lactic acid 6mL / L, ammonium sulfate 30g / L, pH=9.4, temperature 85°C, carbon nano-onion 5g / L, time 2.5 hours. The friction and wear test results show that the wear amount of the Ni-W-P composite coating containing carbon nano-onions is 1 / 3 of the Ni-W-P-graphite composite coating, and its friction coefficient is 0.036, while the friction coefficient of the general graphite-containing Ni-W-P composite coating is 0.06-0.08.

Embodiment 3

[0030] The Ni-B composite coating containing carbon nano-onion spherical nanomaterials was plated on the 45# steel substrate by electroless plating. The plating method is as follows: nickel chloride 30g / L, potassium borohydride 0.8g / L, ethylenediamine 55g / L, sodium hydroxide 40g / L, pH=14, temperature 75°C, carbon nano-onion spherical nano-material 11g / L, time 3 hours. Friction and wear experiments found that: the wear amount of the Ni-B composite coating containing carbon nano-onion spherical nanomaterials is 1 / 7 of the Ni-B coating and 1 / 3 of the Ni-B-graphite composite coating, and its friction coefficient is 0.031. The friction coefficients of Ni-B and Ni-B-graphite are 0.12 and 0.065.

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PUM

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Abstract

The invention discloses a nickel-based composite coating containing carbon nano-onion spherical nano-materials. The preparation of the composite coating adopts chemical composite plating, and the chemical plating solution contains 3-15 g / L of carbon nano-onion spherical nanomaterials. The composite coating of the invention has high wear resistance and antifriction properties. Under the same test conditions, its wear amount is 1 / 5 of Ni-P coating, 1 / 3 of Ni-P-graphite composite coating, and its friction coefficient is only 0.03-0.04, while Ni-P coating and Ni-P-graphite The friction coefficients of the composite coatings are 0.10-0.12 and 0.06-0.07 respectively. The preparation method of the nickel-based composite coating containing the carbon nano-onion spherical nano-material is simple, and can be coated on the surface of steel and aluminum alloy metal parts.

Description

technical field [0001] The invention relates to the plating of materials with metal materials, especially nickel-based composite coatings containing carbon nano-onion spherical nano-materials Background technique [0002] The solid particles contained in the existing various composite coatings mainly include: silicon carbide, diamond, graphite, tungsten sulfide and molybdenum sulfide. Performance is not very ideal. [0003] Graphite with a layered structure has been widely used as a lubricant. Containing graphite particles in the composite coating can improve the tribological properties of the coating. For example, the friction coefficient of Ni-P composite coating containing graphite prepared by chemical composite plating technology can be reduced from 0.11-0.12 of Ni-P chemical coating to 0.06-0.07, and the wear rate is also reduced to 50%. However, the improvement of the wear resistance and antifriction performance of the existing chemical com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36
Inventor 陈卫祥
Owner ZHEJIANG UNIV