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

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

Experimental program
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Example Embodiment

[0041] Example one

[0042] The metal material is Ti-6Al-4V titanium alloy sheet, the size is 50×30×1.5 (mm), and the composite process of self-assembly molecular film technology and organic coating technology is used in turn. The surface of Ti-6Al-4V titanium alloy material is prepared with The anti-friction and anti-wear nano composite 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] Grind the Ti-6Al-4V titanium alloy material with 120#, 360#, 800#, 1200#, 1500#, 2000# sandpaper, and put it in an acetone solution for ultrasonic cleaning for 10 minutes to remove oil stains, take it out and blow dry;

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

[0047] The solvent of the self-assembly solution is prepared according to the volume ratio of ethanol and distilled water 9:...

Example Embodiment

[0061] Example two

[0062] The metal material is 7075 aluminum alloy sheet, the size is 50×30×1.5 (mm), and the composite process of self-assembly molecular film technology and organic coating technology is used in turn to prepare a friction-reducing and anti-wear nano composite film on the surface of 7075 aluminum alloy material , Specifically including the following steps and process conditions:

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

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

[0065] Use 120#, 360#, 800#, 1200#, 1500#, 2000# sandpaper to polish 7075 aluminum alloy workpiece, and put it in acetone solution for ultrasonic cleaning for 10 minutes to remove oil stains, take it out and blow dry;

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

[0067] The solvent of the self-assembly solution is prepared at a volume ratio of ethanol and distilled water of 8:2, the solute is 3-mercaptopropyltrimethoxysilane, t...

Example Embodiment

[0078] Example three

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

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

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

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

[0084] The solvent of the self-assembly solution is prepared according to the volume ratio of ethan...

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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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