Copper-molybdenum disulfide self-lubricating conductive coating and preparation method thereof

A technology of conductive coating and molybdenum disulfide, which is applied in coating, metal material coating process, fusion spraying, etc., can solve the problems that the vacuum electric sliding copper-molybdenum disulfide coating method and technology have not been reported yet. Achieve good anti-friction lubrication, reduce wear and ensure uniformity

Inactive Publication Date: 2014-05-28
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] So far, the method and technology of preparing vacuum electric sliding copper-molybdenum disulfide coating by plasma spraying technology have not been reported yet.

Method used

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  • Copper-molybdenum disulfide self-lubricating conductive coating and preparation method thereof
  • Copper-molybdenum disulfide self-lubricating conductive coating and preparation method thereof
  • Copper-molybdenum disulfide self-lubricating conductive coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0058] Atmospheric plasma spraying powder is 10mass.%MoS 2 , 90mass.% Cu powder, spraying substrate is LY12 aluminum alloy, the substrate is cleaned, degreased and sandblasted. The spraying parameters of the coating are set as: power 22kw, H 2 The flow rate is 0 SLPM, the Ar flow rate is 50 SLPM, the powder feeding rate is 50 g / min, and the spraying distance is 100 mm. The copper-molybdenum disulfide self-lubricating coating was obtained after 40 cycles of spraying at startup, with a thickness of about 250 μm.

[0059] Using the PPMS-9 comprehensive physical performance testing system, the electrical conductivity of the coating is about 10.8×10 -8 Ω m; the vacuum friction coefficient measured by the UMT-2 friction equipment of the US CETR company is about 0.06, and the wear rate is about (6.7±0.65)×10 -4 mg / m, compared with the pure copper bulk material (the vacuum average friction coefficient is about 0.75), the friction and wear properties of the copper-molybdenum disulfi...

Embodiment 2

[0061] Atmospheric plasma spraying powder is 10mass.%MoS 2 , 90mass.% Cu powder, the substrate for spraying is 316 stainless steel, and the substrate is cleaned, degreased and sandblasted. The spraying parameters of the coating are set as: power 22kw, H 2 The flow rate is 2 SLPM, the Ar flow rate is 50 SLPM, the powder feeding rate is 50 g / min, and the spraying distance is 110mm. The copper-molybdenum disulfide self-lubricating coating was obtained after 40 cycles of spraying at startup, and the product was removed for storage.

[0062] The conductivity of the coating is about 7.8×10 -8 Ω·m;, the friction coefficient under vacuum is about 0.07, and the wear rate is about (7.5±0.82)×10 -4 mg / m, the friction and wear performance of the composite coating has been improved.

[0063] Using PPMS-9 comprehensive physical performance testing system, the conductivity of the coating is about 7.8×10 -8 Ω m; the vacuum friction coefficient measured by the UMT-2 friction equipment of ...

Embodiment 3

[0065] Atmospheric plasma spraying powder is 10mass.%MoS 2 , 90mass.% Cu powder, the substrate for spraying is A3 steel, and the substrate is cleaned, degreased and sandblasted. The spraying parameters of the coating are set as: power 22kw, H 2 The flow rate is 4 SLPM, the Ar flow rate is 50 SLPM, the powder feeding rate is 50 g / min, and the spraying distance is 100 mm. The copper-molybdenum disulfide self-lubricating coating was obtained after 40 cycles of spraying at startup, and the product was removed for storage.

[0066] Using the PPMS-9 comprehensive physical performance testing system, the electrical conductivity of the coating is about 8.7×10 -8 Ω m; the vacuum friction coefficient measured by the UMT-2 friction equipment of the US CETR company is about 0.04, and the wear rate is about (5.4±0.33)×10 -4 mg / m, the friction and wear performance of the composite coating has been improved.

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Abstract

The invention discloses a copper-molybdenum disulfide self-lubricating conductive coating and a preparation method thereof. The coating is characterized in that copper and molybdenum disulfide powder used as raw materials are prepared into copper-molybdenum disulfide composite powder through a sintering and crushing method and are prepared into the copper-molybdenum disulfide composite coating through an air plasma spraying technology. The prepared copper-molybdenum disulfide composite coating comprises 75-90 parts of copper, 8-22 parts of molybdenum disulfide and 2-3 parts of other components; and the thickness is about 150-300 mu m. The prepared copper-molybdenum disulfide composite coating obviously improves the frictional wear performance of copper under vacuum, and is a fine solid conductive self-lubricating coating.

Description

technical field [0001] The invention relates to a copper-molybdenum disulfide self-lubricating conductive coating and a preparation method, belonging to the technical field of electric sliding material protection. Background technique [0002] Non-ferrous metal copper has become the material of choice for electrical components due to its excellent thermal and electrical conductivity, toughness, ductility and processability. In addition to being used as transmission wire, copper is also often used as sliding electrical contact materials, such as switch materials such as brushes and armatures, especially copper-based composite materials have been selected as pantograph materials for high-speed trains. Due to the low strength, easy deformation and high wear of copper itself, when it is used as a sliding material, although it shows good electrical and thermal conductivity, it is also accompanied by relatively large wear, especially when used under current-carrying conditions, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/06C23C4/12C23C4/134
Inventor 梁波温银堂甄文柱王文魁
Owner YANSHAN UNIV
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