Preparation method of high-performance Pb/Al coating

A high-performance, coating technology, applied in pressure inorganic powder coating and other directions, can solve the problems of low energy utilization rate of laser surface alloying technology, low production efficiency of ion beam implantation, low bonding strength of vapor deposition, etc., to improve friction The effect of service life, low cost and short cycle

Inactive Publication Date: 2020-06-05
JIANGSU UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

At present, vapor deposition, ion implantation and laser beam surface alloying technologies have all made some progress on Al-Pb alloys. However, the bonding strength of vapor deposition is low and there are certain pores. The production efficiency of ion beam implantation is low and the implantation system Complex and expensive, laser surface alloying technology has problems such as low energy utilization rate and high equipment operation cost

Method used

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  • Preparation method of high-performance Pb/Al coating
  • Preparation method of high-performance Pb/Al coating
  • Preparation method of high-performance Pb/Al coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Alloy layer preparation:

[0029] In the first step, after cutting, pre-grinding, cleaning, and polishing the base 1060 block of pure aluminum, use mechanical coating technology to deposit pure Pb coating on the surface, with a thickness of 10 μm; select the ball material according to the technical requirements of mechanical coating equipment The mass ratio is 10:1, the rotational speed is 250r / min, the time is 1h, and the coating thickness is 10μm.

[0030] In the second step, the sample to be irradiated is fixed on the stage, and the "HOPE-1" type high-current pulsed electron beam device is used to vertically irradiate the surface of the preset coating, and then a Pb / Al alloy layer is obtained on the surface of the Al matrix sample. . Among them, the technical parameters of high-current pulsed electron beam irradiation are: electron beam energy is 23.4KeV, energy density is 3.5J / cm 2 , the target source distance is 15cm, the pulse width is 1.5μs, and the vacuum ...

Embodiment 2

[0035] (1) Alloy layer preparation:

[0036] In the first step, after cutting, pre-grinding, cleaning, and polishing the base 1060 block of pure aluminum, use mechanical coating technology to deposit pure Pb coating on the surface, with a thickness of 10 μm; select the ball material according to the technical requirements of mechanical coating equipment The mass ratio is 10:1, the rotational speed is 250r / min, the time is 1h, and the coating thickness is 10μm.

[0037] In the second step, the sample to be irradiated is fixed on the stage, and the "HOPE-1" type high-current pulsed electron beam device is used to vertically irradiate the surface of the preset coating, and then a Pb / Al alloy layer is obtained on the surface of the Al matrix sample. . Among them, the technical parameters of high-current pulsed electron beam irradiation are: electron beam energy is 23.4KeV, energy density is 3.5J / cm 2 , the target source distance is 15cm, the pulse width is 1.5μs, and the vacuum ...

Embodiment 3

[0042] (1) Alloy layer preparation:

[0043] In the first step, after cutting, pre-grinding, cleaning, and polishing the base 1060 block of pure aluminum, use mechanical coating technology to deposit pure Pb coating on the surface, with a thickness of 10 μm; select the ball material according to the technical requirements of mechanical coating equipment The mass ratio is 10:1, the rotational speed is 250r / min, the time is 1h, and the coating thickness is 10μm.

[0044] In the second step, the sample to be irradiated is fixed on the stage, and the "HOPE-1" type high-current pulsed electron beam device is used to vertically irradiate the surface of the preset coating, and then a Pb / Al alloy layer is obtained on the surface of the Al matrix sample. . Among them, the technical parameters of high-current pulsed electron beam irradiation are: electron beam energy is 23.4KeV, energy density is 3.5J / cm 2 , the target source distance is 15cm, the pulse width is 1.5μs, and the vacuum ...

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Abstract

The invention relates to the technical field of aluminum alloy surface modification, in particular to a method for realizing surface lead alloying of a Pb/Al coating prepared through electron beam irradiation ball milling. Specifically, an Al block and Pb powder needing to be coated and plated are put into a ball mill together to be mixed and ball-milled, a coating is prepared on the surface, andthen an alloying layer with high hardness and excellent wear resistance is prepared on the surface of Al by adopting a method of combining a high-current pulsed electron beam irradiation technology.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy surface modification, in particular to a method for realizing lead alloying on the surface of a Pb / Al coating prepared by electron beam irradiation ball milling. Specifically, put the Al block and the Pb powder to be coated into a ball mill and mix ball milling to prepare a layer of coating on the surface, and then use the method of combining high-current pulsed electron beam irradiation technology to prepare a layer of coating on the Al surface. Alloyed layer with high hardness and excellent wear resistance. Background technique [0002] Due to high specific strength, good ductility, low density, and excellent thermal and electrical conductivity, aluminum (Al) and its alloys have been widely used in various industries such as automotive, sports, aerospace, and electronics. However, low hardness, poor wear performance and corrosion resistance hinder its further application. To overcome th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/04C22F3/00
CPCC22F3/00C23C24/02
Inventor 田娜娜关庆丰吕鹏李雷季雪素杜雪泽李向成
Owner JIANGSU UNIV
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