Metallic surface modification process

A metal surface and modification technology, applied in the direction of metal material coating process, coating, etc., can solve the problem of many control factors, and achieve the effect of simple and easy-to-control process, less equipment investment, and improved technical indicators

Inactive Publication Date: 2009-01-07
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method is related to the coating wear resistance, hardness, thickness, density and the degree of dispersion and mixing of carbon nanotubes and the form in the composite coating and the binding force of other elements. There are many control factors, and it cannot make the coating ordered alignment of carbon nanotubes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Grind the carbon nanotube raw material prepared by the catalytic chemical vapor deposition method with an iron-containing catalyst to 350 mesh; take epoxy resin and xylene solvent to prepare the composite layer substrate according to the ratio of 1:3 by weight, and then mix the above The ground carbon nanotubes and the prepared composite layer matrix are mixed according to the weight ratio of 0.05:1 to form a melt, the viscosity of the melt is 70Pa.s, and 60w / cm 2 Disperse the melt with high-energy ultrasonic waves for 30 minutes to fully disperse the carbon nanotubes in the melt; spread the above melt on the surface of the metal plate to obtain a suspension layer containing carbon nanotubes with a thickness of 0.5mm on the metal surface, and then introduce the above metal plate Magnetic field for magnetophoretic deposition, the magnetic field strength is 300mT, the magnetic field direction is parallel to the carbon nanotube suspension layer, the magnetopho...

Embodiment 2

[0018] Embodiment 2: Take the carbon nanotube raw material prepared by the catalytic chemical vapor deposition method containing iron catalyst and grind to 400 mesh; Take epoxy resin and xylene solvent to prepare the composite layer substrate according to the ratio of 1:2 by weight, and then mix the above The ground carbon nanotubes and the prepared composite layer matrix are mixed according to the weight ratio of 0.1:1 to form a melt. The viscosity of the melt is 100Pa.s. Use 30w / cm 2 Disperse the melt with high-energy ultrasonic waves for 60 minutes to fully disperse the carbon nanotubes in the melt; spread the above melt on the surface of the metal plate to obtain a suspension layer containing carbon nanotubes with a thickness of 1mm on the metal surface, and then introduce the above metal plate into the magnetic field Carry out magnetophoretic deposition, the magnetic field intensity is 400mT, the magnetic field direction is parallel to the carbon nanotube suspension layer,...

Embodiment 3

[0019] Embodiment 3: Take the carbon nanotube raw material prepared by the catalytic chemical vapor deposition method containing iron catalyst and grind to 450 mesh; Take epoxy resin and xylene solvent to prepare the composite layer substrate according to the ratio of 1:1 by weight, and then mix the above The ground carbon nanotubes and the prepared composite layer matrix are mixed according to the ratio of 0.15:1 by weight to form a melt, the melt viscosity is 150Pa.s, and 50w / cm 2 The high-energy ultrasonic wave disperses the molten material for 40 minutes, so that the carbon nanotubes are fully dispersed in the molten material; the above-mentioned molten material is spread on the surface of the metal plate, so that a suspension layer containing carbon nanotubes with a thickness of 2mm is obtained on the metal surface, and then the above-mentioned metal plate is introduced into a magnetic field for Magnetophoretic deposition, the magnetic field strength is 500mT, the magnetic...

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Abstract

A metal surface modification method belongs to the technical field of metal materials and is used for solving the problems of the high technical manufacturing cost, the complicated process and the difficult control of a composite carbon nano-tube with a metal surface. The technical proposal of the invention is that the raw material of the carbon nano tube is selected and the raw material is manufactured by the method of the deposition of catalyst chemical vapor containing iron catalyst, and the composite layer of the directional carbon nano tube with the thickness of 0.05 to 1.0mm is obtained on the metal surface by the processes of the grinding of the raw material, the preparation of the fused mass of the composite layer of the carbon nano tube, the magnetophoresis deposition of the superposed layer of the directional carbon nano tube, press-rolling cold-insertion, etc. The modification method can lead the carbon nano tube with the composite metal surface to be in ordered direction and can adjust the thickness of the composite layer; and the method combines the advantages of the common metal surface for the carbon nano-tube, thus improving the technical data of the carbon nano tube greatly, such as anti-oxidation, wear-resisting property, self-lubricity and strength, etc. Compared with the prior art, the modification method has low material cost and little investment in equipment, and the process of the modification method is easy to be controlled, so the modification method is suitable for continuous mass production.

Description

technical field [0001] The invention relates to a method for preparing a metal material, in particular to a metal surface modification method for compounding a carbon nanotube layer on a metal surface, and belongs to the technical field of metal materials. Background technique [0002] Oxidation and corrosion of metal surfaces not only bring us damage to equipment and a large amount of waste of materials, but also bring pollution to the environment. The metal surface has better tensile, compressive and flexural properties, good wear resistance, oxidation resistance, and self-lubricating properties, which means less material consumption and is more environmentally friendly. [0003] Carbon nanotubes are seamless nanoscale tubes formed by single-layer or multi-layer graphite sheets curled around the central axis at a certain helix angle. Carbon nanotubes have strong tensile, compressive and flexural capabilities. The tensile strength of carbon nanotubes is about 100 times tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C26/00
Inventor 侯国宪张金梅
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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