Method for preparing non-smooth surface of alloy substrate

A non-smooth surface and alloy matrix technology, applied in the field of laser processing, can solve the problems of insignificant improvement of matrix performance, shallow implantation depth, and failure to meet the requirements of use, so as to enhance the adsorption of nanoparticles, improve hardness, and friction and wear properties. and the effect of improving corrosion resistance

Inactive Publication Date: 2015-09-02
JIANGSU UNIV
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Problems solved by technology

[0003]The usual method of laser shock implantation of nanoparticles on smooth substrate surface, the distribution of nanoparticles is uneven, the implantation depth is shallow, the performance of the substrate is not significantly improved, and some key points cannot be met Component usage requirements
[0004]Researchers are actively looking for suitable laser

Method used

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  • Method for preparing non-smooth surface of alloy substrate
  • Method for preparing non-smooth surface of alloy substrate
  • Method for preparing non-smooth surface of alloy substrate

Examples

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[0025] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] The invention provides a novel method for preparing a nano-carbon-based film on the surface of an alloy substrate. The specific steps are:

[0027] (1) Laser engrave the width b in the area to be processed on the surface of the workpiece 6 1 , deep d 1 slots, the horizontal and vertical intervals are l 1 , l 2 , forming a grid-like structure.

[0028] (2) Inject nanoparticles into the grid grooves, cover the surface of the substrate with an absorbing layer 5 and a constraining layer 4 , and install it on a five-axis workbench 7 .

[0029] (3) The parameters of the laser 2 are set by the laser control device 1 .

[0030] (4) Adjust the five-axis table 7 through the numerical control system 8 so that the center of the light spot coincides with the upper left corner of the area to be impacted at point A, and make the X-axis and...

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Abstract

The invention relates to the field of laser processing, and particularly relates to a method for preparing a non-smooth surface of an alloy substrate. According to the adopted scheme, the method comprises the following steps: carrying out laser engraving on the surface of the alloy substrate in advance to prepare a micrometer groove with certain depth-to-width ratio; injecting carbide nano-particles into the micrometer groove, closely adsorbing the nano-particles into the groove by utilizing the size effect of the surface adsorption of nano-particles, i.e., an equilibrium adsorption constant is increases with the reduction of size; and impacting the surface of the alloy substrate by using strong pulse laser to generate a plasma shock wave on an absorption layer. According to the method, the adsorption effect of the nano-particles is further enhanced under the action of a strong shock wave, and a part of the nano-particles are implanted into the surface of the alloy substrate, so that the rigidity, friction and abrasion resistant property, corrosion resistant property and the like of the surface of the alloy substrate are greatly enhanced.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a method for preparing a non-smooth surface of an alloy matrix; injecting nanoparticles into micron-sized grooves and strengthening them by laser shock, so as to strengthen the adsorption of nanoparticles and realize the implantation of nanoparticles at the same time. Significantly improve the hardness, friction and wear performance and corrosion resistance of the substrate surface. Background technique [0002] Laser shock strengthening means that the absorbing layer absorbs laser energy to generate ion shock waves, and the shock waves are affected by the constrained layer, which produces a reaction force on the surface of the substrate, causing plastic deformation on the surface of the substrate, accompanied by residual compressive stress; laser shock implantation refers to The surface of the substrate is covered with a layer of nanoparticle absorption layer. Under the action of...

Claims

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Application Information

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IPC IPC(8): C21D10/00C23C24/10
Inventor 鲁金忠张文泉罗开玉邢佳
Owner JIANGSU UNIV
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