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Wear-resistant, corrosion-resistant high-entropy amorphous alloy powder and its coating, coating preparation method and application

A technology of amorphous coating and amorphous alloy, applied in the field of alloys, can solve the problems of limited types of high-entropy amorphous coatings, difficulty in ensuring coatings, and low amorphous content, so as to improve coating adhesion and coating Quality, improved corrosion resistance, high toughness effect

Active Publication Date: 2022-02-15
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As far as the material system is concerned, the types of existing high-entropy amorphous coatings are limited, and the above-mentioned high-entropy amorphous alloy materials and coating preparation methods have not yet obtained a complete amorphous structure. Laser cladding high-entropy amorphous coatings The amorphous content is even lower than 50%, and the low amorphous content is difficult to ensure that the coating has excellent corrosion resistance and wear resistance

Method used

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  • Wear-resistant, corrosion-resistant high-entropy amorphous alloy powder and its coating, coating preparation method and application
  • Wear-resistant, corrosion-resistant high-entropy amorphous alloy powder and its coating, coating preparation method and application
  • Wear-resistant, corrosion-resistant high-entropy amorphous alloy powder and its coating, coating preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0038] Wear-resistant, corrosion-resistant high-entropy amorphous alloy powder, according to the powder atomic percentage: Co 26%, Ni 26%, Cr 18%, Mo8%, Nb 2%, B 14%, Si 6%, weighing ingredients. The laminar flow ultrasonic argon atomization method is a tool that puts the above-mentioned powder into the crucible furnace, vacuumizes it and pours it into high-purity argon for melting, and inputs the liquid droplets to be atomized after melting to the ultrasonic transducer The surface of the head is atomized into small droplets under ultrasonic vibration. The high-entropy amorphous alloy powder is prepared by laminar flow ultrasonic argon atomization method, and the alloy powder with a particle size of 150-800 mesh is obtained, and three kinds of 150-300 mesh, 300-400 mesh, and 400-800 mesh are sieved by a powder sieving machine. particle size grade powder.

[0039] A coating prepared by using the above-mentioned wear-resistant and corrosion-resistant high-entropy amorphous allo...

Embodiment 2

[0049] Wear-resistant, corrosion-resistant high-entropy amorphous alloy powder, according to the powder atomic percentage: Co 26%, Ni 26%, Cr 17%, Mo7%, Nb 4%, B 14%, Si 6%, weighing ingredients. The laminar flow ultrasonic argon atomization method is to put the prepared powder into the crucible furnace, vacuumize it and pour it into high-purity argon for melting, and input the melted liquid droplets to be atomized into the tool head of the ultrasonic transducer The surface is atomized into small droplets under ultrasonic vibration. The high-entropy amorphous alloy powder is prepared by laminar flow ultrasonic argon atomization method, and the alloy powder with a particle size of 150-800 mesh is obtained, and three kinds of 150-300 mesh, 300-400 mesh, and 400-800 mesh are sieved by a powder sieving machine. particle size grade powder.

[0050] The preparation method of the coating of high entropy amorphous alloy powder, comprises the following steps,

[0051] S01, pre-treatm...

Embodiment 3

[0056] Wear-resistant, corrosion-resistant high-entropy amorphous alloy powder, according to the powder atomic percentage: Co 26%, Ni 26%, Cr 17%, Mo7%, Nb 4%, B 14%, Si 6%, weighing ingredients. The laminar flow ultrasonic argon atomization method is to put the prepared powder into the crucible furnace, vacuumize it and pour it into high-purity argon for melting, and input the melted liquid droplets to be atomized into the tool head of the ultrasonic transducer The surface is atomized into small droplets under ultrasonic vibration. The high-entropy amorphous alloy powder is prepared by laminar flow ultrasonic argon atomization method, and the alloy powder with a particle size of 150-800 mesh is obtained, and three kinds of 150-300 mesh, 300-400 mesh, and 400-800 mesh are sieved by a powder sieving machine. particle size grade powder.

[0057] The preparation method of the coating of high entropy amorphous alloy powder, comprises the following steps,

[0058] S01, pre-treatm...

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Abstract

The invention discloses a wear-resistant and corrosion-resistant high-entropy amorphous alloy powder, which comprises Co 25%, Ni 25%, Cr 15-20%, Mo 5-10%, Nb 2-4%, B 14 % and Si 6%. The invention also discloses a coating prepared by using wear-resistant and corrosion-resistant high-entropy amorphous alloy powder. The invention also discloses the preparation method of the coating and the application of the coating in wear-resistant and corrosion-resistant parts. The high-entropy amorphous coating prepared by the present invention has a relatively high amorphous content, and at the same time, multi-pass spraying heat accumulation and alternating air cooling conditions promote the precipitation of dispersed nanocrystals of 50 to 100 nm in the amorphous coating. The distributed nanocrystals significantly enhance the fracture toughness of the amorphous coating. In addition, effective heat accumulation and alternating air cooling prevent excessive thermal stress from causing cracks in the coating, thereby significantly improving the coating adhesion and coating quality.

Description

technical field [0001] The invention relates to a wear-resistant and corrosion-resistant high-entropy amorphous alloy powder and its coating, a preparation method and application of the coating, and belongs to the field of alloy technology. Background technique [0002] The key components of marine engineering equipment (such as water turbine blades, offshore drilling platforms, and oil and gas exploration equipment, etc.) are mainly located in the harsh marine environment, and are prone to corrosion damage and corrosion wear, which can easily lead to safety accidents and cause serious damage to the social economy and the marine ecological environment. irreversible damage. [0003] In order to reduce the damage and loss caused by wear and corrosion, many countries have been devoting themselves to the research of wear resistance and corrosion protection. The wear and corrosion of the workpiece first occur on the surface of the material, so the surface of the material is the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/067C23C4/134C22C45/04B82Y40/00
CPCC23C4/067C23C4/134C22C45/04B82Y40/00C22C2200/04C22C2200/02
Inventor 王章忠俞亚秋张保森朱帅帅张志佳陶学伟
Owner NANJING INST OF TECH
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