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Preparation method for metal material surface antifriction and antiwear nano-composite film

A metal material and nano-composite technology is applied in the field of preparation of anti-friction and anti-wear nano-composite films on the surface of metal materials. Large contact angle, wide range of effects

Inactive Publication Date: 2012-02-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The composite film prepared by this technology has a certain anti-friction effect, but because the composite film obtained by the pulling method relies on physical adsorption bonding, the bonding strength between the film layers is low, and the silane film formed by the previous self-assembly technology exists. The shortcomings such as low density and poor stability have not been improved significantly, resulting in unsatisfactory anti-wear properties of the film, so that its service life is limited

Method used

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  • Preparation method for metal material surface antifriction and antiwear nano-composite film
  • Preparation method for metal material surface antifriction and antiwear nano-composite film
  • Preparation method for metal material surface antifriction and antiwear nano-composite film

Examples

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Effect test

Embodiment 1

[0042] The metal material is a Ti-6Al-4V titanium alloy plate with a size of 50×30×1.5 (mm). The composite process of self-assembled molecular film technology and organic coating technology is used in turn to prepare a special surface on the surface of the Ti-6Al-4V titanium alloy material. The anti-friction and anti-wear nanocomposite film specifically includes the following steps and process conditions:

[0043] Step 1: Preparation of self-assembled molecular film on the surface of Ti-6Al-4V titanium alloy material

[0044] (1) Surface pretreatment of Ti-6Al-4V titanium alloy material

[0045]Use 120#, 360#, 800#, 1200#, 1500#, 2000# sandpaper to polish the Ti-6Al-4V titanium alloy material, put it in acetone solution and ultrasonically clean it for 10 minutes to remove oil stains, take it out and dry it;

[0046] (2) Preparation of self-assembly solution

[0047] The solvent of the self-assembly solution is prepared by ethanol and distilled water at a volume ratio of 9:1,...

Embodiment 2

[0062] The metal material is a 7075 aluminum alloy plate with a size of 50×30×1.5 (mm). A composite process of self-assembled molecular film technology and organic coating technology is used in turn to prepare a nanocomposite film with anti-friction and anti-wear properties on the surface of the 7075 aluminum alloy material. , specifically including the following steps and process conditions:

[0063] Step 1: Preparation of self-assembled molecular film on the surface of 7075 aluminum alloy material

[0064] (1) Surface pretreatment of 7075 aluminum alloy material

[0065] Grind the 7075 aluminum alloy workpiece with 120#, 360#, 800#, 1200#, 1500#, 2000# sandpaper, put it in acetone solution and ultrasonically clean it for 10 minutes to remove oil stains, take it out and dry it;

[0066] (2) Preparation of self-assembly solution

[0067] The solvent of self-assembly solution is prepared by ethanol and distilled water volume ratio 8: 2, and solute is 3-mercaptopropyltrimethox...

Embodiment 3

[0079] The metal material is NdFeB permanent magnet material, with a size of 10×10×4 (mm). A composite process of self-assembled molecular film technology and organic coating technology is used in turn to prepare a nanocomposite film with anti-friction and anti-wear properties on the surface of NdFeB permanent magnet material. , specifically including the following steps and process conditions:

[0080] Step 1: Preparation of self-assembled molecular film on the surface of NdFeB permanent magnet material

[0081] (1) Surface pretreatment of NdFeB permanent magnet materials

[0082] Use 120#, 360#, 800#, 1200#, 1500#, 2000# sandpaper to polish the surface of NdFeB permanent magnet material, put it in acetone solution and ultrasonically clean it for 10 minutes to remove oil stains, take it out and dry it;

[0083] (2) Preparation of self-assembly solution

[0084] The solvent of self-assembly solution is formulated by ethanol and distilled water volume ratio 9: 1, and solute i...

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Abstract

The present invention discloses a preparation method for a metal material surface antifriction and antiwear nano-composite film. According to the method, a combination process of a self-assembled molecular film technology and an organic plating technology is sequentially adopted to prepare the nano-composite film with functions of antifriction property and anti-wear property on titanium alloy surfaces, aluminum alloy surfaces, NdFeB permanent magnet material surfaces, magnesium alloy surfaces or low carbon steel surfaces. The solute of the self-assembled solution is a thiol-silane organic compound salt, wherein the thiol-silane organic compound salt concurrently contains -SH and -Si(OR)3, the concentration of the thiol-silane organic compound salt is 0.5-10 mmol / L. The organic plating electrolyte solution comprises 0.1-10 mmol / L of a thiol organic compound salt containing -SH and 0.1-6 mol / L of a supporting electrolyte. According to the present invention, the preparation method of the present invention has characteristics of simple process, convenient operation; the prepared nano-composite film has characteristics of short preparation period, low cost, controllable thickness of the composite film and good stability; the prepared nano-composite film of the invention has excellent antifriction property and anti-wear property so as to solve the tribology problems of the materials in the micro / nano-electromechanical systems, and is applicable for the industrialization.

Description

technical field [0001] The invention relates to the technical field of material surface modification, in particular to a method for preparing a friction-reducing and anti-wear nanocomposite film on the surface of a metal material. Background technique [0002] With the continuous advancement of science and technology, industrial products have developed along the trend of mechatronics, ultra-precision, miniaturization and integration, resulting in the new technical field of micro / nano electromechanical systems (MEMS / NEMS) , and become a research hotspot in materials science. However, with the significant reduction of component size, the ratio of surface area to volume increases significantly, the surface effect is greatly enhanced, and problems such as friction and wear and surface adhesion become more prominent, which seriously affects the reliability and stability of MEMS / NEMS and becomes a constraint for MEMS. / The bottleneck of further application of NEMS. Therefore, i...

Claims

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Application Information

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IPC IPC(8): C25D9/02C08L83/04C08J5/18
Inventor 康志新方刚刘秦
Owner SOUTH CHINA UNIV OF TECH
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