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Zn/ZnS composite solid lubrication film and preparation method thereof

A technology of solid lubrication and thin film, which is applied in the field of Zn/ZnS composite solid lubricating thin film and its preparation, can solve the problems of low bonding strength between ZnS thin film and substrate, no relevant research in the field of tribology, and influence on friction reduction and wear resistance, etc. Achieve excellent solid lubricating performance, novel structure, and improve lubricating conditions

Active Publication Date: 2010-08-04
ACADEMY OF ARMORED FORCES ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method directly uses ZnS powder to prepare ZnS thin film, and the inaccurate temperature control will easily affect the quality of the product. The thickness of the prepared ZnS film is relatively thin, and the bonding strength of the ZnS thin film prepared by this method and the substrate is not high, thus affecting its friction reduction. Wear resistance
[0006] And it is found that ZnS is used in the field of tribology mainly in the form of ZnS nanoparticles added to lubricating oil, while ZnS thin films prepared by other methods are mainly used in optoelectronic fields such as solar cells, and there is no relevant research in the field of tribology

Method used

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  • Zn/ZnS composite solid lubrication film and preparation method thereof
  • Zn/ZnS composite solid lubrication film and preparation method thereof
  • Zn/ZnS composite solid lubrication film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] First, the substrate is quenched, the hardness is HRC55, and the surface roughness is 0.8 μm; then the surface of the substrate is pretreated by sandblasting with 16 mesh brown corundum, the air pressure is 0.7MPa, the sandblasting angle is 45°, and the sandblasting distance is 200mm.

[0049] A Zn layer was sprayed on the surface of the substrate with a high-speed arc spray gun in the arc spraying equipment to obtain a Zn layer with a thickness of about 400 μm. The specific process parameters are shown in Table 1:

[0050] Table 1

[0051] Spraying voltage / V

Spraying current / A

Compressed air / MPa

Spray distance / mm

Spraying time

30

120

0.7

100

60S

[0052] Finally, the substrate sprayed with Zn coating is subjected to low-temperature ion sulfurization treatment; the reaction gas of ion sulfurization is solid sulfur vapor, and the substrate coated with Zn coating is connected to the cathode, and the furnace wall...

Embodiment 2

[0062] First, the substrate is quenched, the hardness is HRC55, and the surface roughness is 0.8 μm; then the surface of the substrate is pretreated by sandblasting with 16 mesh brown corundum, the air pressure is 0.7MPa, the sandblasting angle is 45°, and the sandblasting distance is 200mm.

[0063] A Zn layer was sprayed on the surface of the substrate with a high-speed arc spray gun in the arc spraying equipment to obtain a Zn layer with a thickness of about 400 μm. The specific process parameters are shown in Table 2:

[0064] Table 2

[0065] Spraying voltage / V

Spraying current / A

Compressed air / MPa

Spray distance / mm

Spraying time

32

140

0.7

150

60S

[0066] Finally, the substrate sprayed with Zn coating is subjected to low-temperature ion sulfurization treatment; the reaction gas of ion sulfurization is solid sulfur vapor, and the substrate coated with Zn coating is connected to the cathode, and the furnace wall...

Embodiment 3

[0076] First, the substrate is quenched, the hardness is HRC55, and the surface roughness is 0.8 μm; then the surface of the substrate is pretreated by sandblasting with 16 mesh brown corundum, the air pressure is 0.7MPa, the sandblasting angle is 45°, and the sandblasting distance is 200mm.

[0077] A Zn layer was sprayed on the surface of the substrate with a high-speed arc spray gun in the arc spraying equipment to obtain a Zn layer with a thickness of about 400 μm. The specific process parameters are shown in Table 3:

[0078] table 3

[0079] Spraying voltage / V

Spraying current / A

Compressed air / MPa

Spray distance / mm

Spraying time

35

160

0.7

180

60S

[0080] Finally, the substrate sprayed with Zn coating is subjected to low-temperature ion sulfurization treatment; the reaction gas of ion sulfurization is solid sulfur vapor, and the substrate coated with Zn coating is connected to the cathode, and the furnace wall...

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Abstract

The invention discloses a Zn / ZnS composite solid lubrication film and a preparation method thereof. A Zn coating is sprayed on a matrix by high-temperature electric arc so as to form a Zn film, and then the Zn film goes through low temperature ion sulfinuz processing, thereby preparing the Zn / ZnS composite solid lubrication film. The method utilizes two steps to carry out composite processing andprepares the novel Zn / ZnS composite solid lubrication film. The Zn / ZnS composite solid lubrication film has novel structure and even distribution of sulfur in the Zn film, therefore, the film of the invention has more excellent performance with regard of antifriction, abrasion resistance and the like compared with that of the current solid lubrication films, can be better combined with the matrixand is more practicable. The Zn / ZnS composite solid lubrication film prepared by the invention has rather excellent solid lubrication performance, namely, 'super lubricity', and especially under dry friction condition, the lubrication performance and the antifriction and abrasion resistance performance thereof are better than that of the current solid lubrication films; and the Zn / ZnS composite solid lubrication film can be applied to various friction surfaces of mechanical equipment and is especially applicable to the surface of precision instruments so as to reduce friction and improve lubrication conditions.

Description

technical field [0001] The invention relates to a solid lubricating film, in particular to a Zn / ZnS composite solid lubricating film and a preparation method thereof. Background technique [0002] Commonly used solid lubricating materials mainly refer to materials with a layered structure, such as graphite, molybdenum disulfide and other inorganic substances, as well as high-temperature lubricating materials used above 250 ° C, including elemental sulfides, oxides, fluorides, selenides, etc. . A substance with a layered structure, low shear strength, and easy to adhere to the surface of the substrate. Other solid-lubricating inorganic substances have low friction coefficient and high adhesive strength, and are easy to form a transfer film on the surface of the dual material, thereby reducing friction and wear. These materials, in addition to being used alone as the main component, can also be used with other materials. Materials made of composite materials are used. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C4/08C23C8/36C23C4/131
Inventor 王海斗徐滨士康嘉杰朱丽娜李国禄刘家浚
Owner ACADEMY OF ARMORED FORCES ENG PLA
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