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Spray deposition mos under the action of electric field force assisted by temperature control device 2 /ti composite film

A technology of temperature control device and auxiliary electric field, applied in metal material coating process, coating and other directions, can solve the problems of limited film thickness range, poor adaptability to atmospheric environment, high manufacturing cost, etc., achieve universal applicability, improve film base The effect of combining strength and low cost

Active Publication Date: 2020-11-17
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Currently commonly used MoS 2 The preparation methods of thin films are mainly chemical vapor deposition (CVD) and physical vapor deposition (PVD), but the inventors found that: this method has complicated process, high manufacturing cost, limited range of film thickness and poor adaptability to atmospheric environment, which is easy to occur Oxidation failure and other issues

Method used

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  • Spray deposition mos under the action of electric field force assisted by temperature control device <sub>2</sub> /ti composite film
  • Spray deposition mos under the action of electric field force assisted by temperature control device <sub>2</sub> /ti composite film
  • Spray deposition mos under the action of electric field force assisted by temperature control device <sub>2</sub> /ti composite film

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Effect test

preparation example Construction

[0063] The second purpose of this application is to propose a MoS 2 / Ti composite gradient film and its preparation method, the suspension is in a high-voltage electric field, under the action of electric field force and mechanical force, it will be atomized into stable nano-scale droplets, and deposits on the surface of the substrate have higher film-base bonding strength and good Anti-friction performance of MoS 2 / Ti composite gradient film. Its preparation process steps are as follows:

[0064] (1) Add different masses of molybdenum disulfide powder, titanium powder and binder to the same amount of solvent, and stir magnetically for 20 hours to obtain Ti suspension, MoS 2 / Ti(20%) suspension, MoS 2 / Ti(10%) suspension, MoS 2 / Ti(5%) suspension and MoS 2 suspension;

[0065] (2) First, prepare a Ti transition layer on the surface of the substrate, and the optimized preparation parameters are: the electric field strength is 7×10 5 V / m, the flow rate of Ti suspension i...

Embodiment 1

[0075] Spray deposition of MoS by electric field force assisted by a temperature control device 2 / Ti composite thin film method, its preparation process steps are as follows:

[0076] (1) Pre-treat the surface of the substrate, grind and polish the surface of cemented carbide YG6 (mainly composed of WC and Co) to a mirror surface, and ultrasonically clean it in acetone and absolute ethanol solutions for 20 minutes respectively.

[0077] (2) Add 0.5gMoS 2 The powder, 0.05g of Ti powder, 0.1g of ethyl cellulose and 2.5g of absolute ethanol were mixed in a certain proportion, and fully stirred with a magnetic stirrer for 20 hours to obtain a suspension with a certain viscosity.

[0078] (3) Set the parameters of feed system 1 so that the suspension is 1×10 -10 m 3 ·s -1 The flow rate flows out from the metal spray needle 6 through the rubber hose 4, and forms a stable micron-scale "cone-jet" in the electric field to atomize nano-scale droplets; the hard alloy substrate 7 is ...

Embodiment 2

[0082] Spray deposition of MoS by electric field force assisted by a temperature control device 2 / Ti composite thin film method, its preparation process steps are as follows:

[0083] (1) Pre-treat the surface of the substrate, grind and polish the surface of cemented carbide YG6 (mainly composed of WC and Co) to a mirror surface, and ultrasonically clean it in acetone and absolute ethanol solutions for 20 minutes respectively.

[0084] (2) Add 0.5gMoS 2 The powder, 0.125g of Ti powder, 0.1g of ethyl cellulose and 2.5g of absolute ethanol were mixed in a certain proportion, and fully stirred with a magnetic stirrer for 20 hours to obtain a suspension with a certain viscosity.

[0085] (3) Set the parameters of feed system 1 so that the suspension is 1.5×10 -10 m 3 ·s -1 The flow rate flows out from the metal spray needle 6 through the rubber hose 4, and forms a stable micron-scale "cone-jet" in the electric field to atomize nano-scale droplets; the cemented carbide substr...

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Abstract

The invention relates to a temperature control device assisted electric field force acting spray-deposited MoS2 / Ti composite film. MoS2 / Ti suspension liquid uniformly enters an electric field at a certain flowing speed and is atomized into nano-scale liquid scales under the action of gravity, electric field force and the like to be deposited on the surface of a matrix in a spray manner, dry pyrolysis of the film is competed through a temperature control device, and the MoS2 / Ti composite film is obtained through layer-by-layer deposition. By means of a method, the deposition process and the drypyrolysis process are completed at the same time, time is saved, cost is reduced, the prepared film is uniform and free of cracks, and the advantages of being low in friction coefficient, high in hardness, good in wear resistance and the like are achieved. The composite gradient film sequentially comprises the matrix, a Ti transition layer, a MoS2 / Ti composite layer and a MoS2 layer from the matrix to the surface. The MoS2 / Ti composite layer comprises a MoS2 / Ti (20%) layer, a MoS2 / Ti (10%) layer, a MoS2 / Ti (5%) layer and a MoS2 / Ti (2%) layer from inside to outside.

Description

technical field [0001] The invention belongs to the field of surface treatment, in particular to spray deposition of MoS by electric field force assisted by temperature control device 2 / Ti composite film. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] In recent years, with the rapid development of high-tech such as aerospace, traditional grease lubrication has been unable to meet the special friction and wear requirements under ultra-high vacuum, high speed, high load, aerospace and extreme environmental conditions. MoS 2 As a solid lubricating material, it has a layered hexagonal crystal structure. The Mo-S bond in the layer is combined with a strong chemical bond, a...

Claims

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Application Information

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IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 孙婕邓建新李学木
Owner SHANDONG UNIV
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