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Aluminum-based coating and preparation method thereof, and aluminum alloy composite material prepared from aluminum-based coating and preparation method of aluminum alloy composite material

A technology of aluminum-based coatings and composite materials, applied in manufacturing tools, welding equipment, metal processing equipment, etc., can solve the problem of coating wear resistance, hardness, interface strength and other properties that are difficult to preset and control, and affect the coating Problems such as connection strength and short service life, to improve wear resistance and hardness, excellent forming effect, and excellent matching

Active Publication Date: 2019-04-05
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still several problems that need to be solved urgently. First, the thickness of the coating prepared by the above method is generally thin, and the thinner the coating, the shorter the service life; second, the interface bonding strength between the coating and the substrate determines the coating. Overall performance, coating wear resistance, hardness, interface strength and other properties are difficult to preset and control; third, the spatial position of the coating and the substrate (such as curved surface, folded surface, helical surface, inner diameter, inner spherical surface, etc.) It is difficult not to be limited by the method of coating preparation; finally, there are high internal stresses in the preparation of composite metal coatings on the surface of aluminum alloys, which in turn affects the quality of the coating and its connection strength with the substrate

Method used

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  • Aluminum-based coating and preparation method thereof, and aluminum alloy composite material prepared from aluminum-based coating and preparation method of aluminum alloy composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The aluminum-based coating raw materials include the following raw materials: 30% Ni-SiC powder, 45% 6061 aluminum alloy powder, 21% Al-Si-Cu powder and 4% silicone resin binder. Wherein, the mass fraction of Si in the Al-Si-Cu powder may be 6.0%, the mass fraction of Cu may be 28%, and the balance may be Al. The silicone resin binder includes the following raw materials: 38.8% polytetrafluoroethylene, 22.5% methyltriethoxysilane, 8.5% fluororubber, 3.3% maleic anhydride, 5.2% styrene-butadiene rubber, 0.8% polyaldehyde Resin, 8.8% Talc, 6.7% Acrylic Rubber, 4.2% Polycarbonate, 1.2% Hydroxy Dimethicone.

[0029] The preparation method of aluminum-based coating comprises the steps:

[0030] (1) Take Ni-SiC powder, 6061 aluminum alloy powder, Al-Si-Cu powder by mass percentage, and mix them;

[0031] (2) Put the mixture into an automatic stirring equipment container, and add a silicone resin binder, then close the container, and stir to obtain a uniform mixture;

[003...

Embodiment 2

[0041] The aluminum-based coating material includes the following raw materials: 60% Ni-SiC powder, 15% 6061 aluminum alloy powder, 23% Al-Si-Cu powder and 2% silicone resin binder. Wherein, the mass fraction of Si in the Al-Si-Cu powder is 11.7%, the mass fraction of Cu is 5%, and the balance is Al. The raw material of the silicone resin binder is the same as in Example 1.

[0042] The preparation method of aluminum-based coating comprises the steps:

[0043] (1) Take Ni-SiC powder, 6061 aluminum alloy powder, Al-Si-Cu powder by mass percentage, and mix them;

[0044] (2) Put the mixture into an automatic stirring equipment container, and add a silicone resin binder, then close the container, and stir to obtain a uniform mixture;

[0045] (3) Roll the mixed metal powder particles obtained in step (2) on the automatic roll equipment. First, adjust the distance between the roll and the workbench, control the thickness of the bonding cloth at about 3.0-5.0 mm, and perform prel...

Embodiment 3

[0054] The aluminum-based coating raw materials include the following raw materials: 45% Ni-SiC powder, 30% 6061 aluminum alloy powder, 22% Al-Si-Cu powder and 3% organic silicon resin binder. Wherein, the mass fraction of Si in the Al-Si-Cu powder is 10%, the mass fraction of Cu may be 24%, and the balance is Al. The silicone resin binder raw material is the same as in Example 1.

[0055] The preparation method of aluminum-based coating comprises the steps:

[0056] (1) Take Ni-SiC powder, 6061 aluminum alloy powder, Al-Si-Cu powder by mass percentage, and mix them;

[0057] (2) Put the mixture into an automatic stirring equipment container, and add a silicone resin binder, then close the container, and stir to obtain a uniform mixture;

[0058] (3) Roll the mixed metal powder particles obtained in step (2) on the automatic roll equipment. First, adjust the distance between the roll and the workbench, control the thickness of the bonding cloth at about 3.0-5.0 mm, and perfo...

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Abstract

The invention discloses an aluminum-based coating and a preparation method thereof, and an aluminum alloy composite material prepared from the aluminum-based coating and a preparation method of the aluminum alloy composite material. The aluminum-based coating is prepared from Ni-SiC powder, aluminum alloy powder, Al-Si-Cu powder and an organic silicon resin adhesion agent. The preparation method of the aluminum-based coating includes the steps that after raw material powder are mixed, the organic silicon resin adhesion agent is added for repeat-rolling, and the aluminum-based coating is obtained. The aluminum alloy composite material prepared from the aluminum-based coating comprises an aluminum alloy substrate and the aluminum-based coating covering the surface of the substrate. The preparation method of the aluminum alloy composite material includes the steps that the aluminum-based coating is tightly attached to the surface of a pretreated aluminum alloy to be subjected to a brazingreaction. The aluminum-based coating is made of a flexible fibrous metal material, and metal fibers in the coating form a crisscrossed three-dimensional spider-web type structure; the aluminum-basedcoating and a substrate material are subjected to brazing compound, the forming effect is excellent, the bonding strength is high, and wear resistance and the hardness of the surface of the substratematerial can be effectively improved; and in addition, the preparation method is simple and convenient, and safe and environmental friendly.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to an aluminum-based coating, a preparation method and an aluminum alloy composite material prepared by using the coating. Background technique [0002] "Made in China 2025" proposes "to vigorously develop the remanufacturing industry and implement high-end remanufacturing, intelligent remanufacturing, and in-service remanufacturing". The development of industrial modernization has higher and higher requirements for the surface performance of equipment and parts, especially under harsh environmental conditions such as high speed, high temperature, high pressure, heavy load, and corrosive media, the surface of parts materials will be worn and corroded. And gradually develop to the inside of the part, causing the entire part to fail. Among them, aluminum and aluminum alloys have the advantages of low density, high strength and corrosion resistance, and are currently wid...

Claims

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Application Information

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IPC IPC(8): C23C24/06B22F1/00B23K1/008B23K1/20
CPCC23C24/06B23K1/008B23K1/20B23K1/206B22F1/103B22F1/10
Inventor 许祥平王怡邹家生朱嘉伟
Owner JIANGSU UNIV OF SCI & TECH
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