Aluminum alloy amorphous powder material, preparation method, application and coating preparation method

An amorphous powder and powder material technology, which is applied in the fields of preparation, coating preparation, and aluminum alloy amorphous powder materials, can solve the problem that Al-based amorphous powder is difficult to prepare in large quantities, the production cost of Al-based amorphous powder is high, and the industrial application There are few problems such as exploration and research to achieve the effect of improving aircraft survivability, improving comprehensive anti-fatigue performance, and being easy to achieve

Inactive Publication Date: 2020-04-17
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main reasons are: (1) Al-based amorphous powder suitable for cold spraying process is difficult to prepare in large quantities, and the production cost of Al-based amorphous powder is high
(2) There are still certain technical difficulties in the preparation of Al-based amorphous anti-corrosion and wear-resistant coatings by cold spraying process, and there are few researches on industrial applications.
(3) The accumulation of data on the effective effect of cold sprayed amorphous coatings on certain components in the aviation field is insufficient, the exploration is not thorough, and the application development is not yet mature
Due to the small powder components, the invention does not fully comply with Inoue's amorphous powder principle, Greer's "chaos principle", and Davis' deep eutectic point criterion
The powder particles of this component are fine, regular in shape, low in oxygen content, and high in powder forming rate, but the powder has a low proportion of amorphous content, indicating that the component has poor ability to form amorphous, and the powder preparation process is difficult to control, so it is not suitable for powder Industrialization of bulk raw materials

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  • Aluminum alloy amorphous powder material, preparation method, application and coating preparation method
  • Aluminum alloy amorphous powder material, preparation method, application and coating preparation method
  • Aluminum alloy amorphous powder material, preparation method, application and coating preparation method

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Embodiment 1

[0040] This embodiment relates to the anti-corrosion, wear-resistant and anti-fatigue aluminum alloy amorphous powder material, coating preparation method and application in the aviation field of the present invention.

[0041] (1) The composition of the alloy elements is configured according to the atomic percentage: 84% Al, and the rest are Ni, La, Co, Y, and Gd.

[0042] (2) Open the argon gas valve, conduct atomization at a melting temperature of 1200° C. and an atomization pressure of 38 kg to prepare an amorphous powder.

[0043] (3) After cooling the atomized aluminum alloy powder, remove the powder collector and sieve to obtain a powder with a particle size distribution of 10-30 μm.

[0044] (4) The obtained aluminum alloy amorphous powder is sprayed on the surface of the light alloy member by cold spraying process, and the spraying process parameters are as follows: carrier gas nitrogen preheating temperature 320°C, pressure 2.5MPa, spraying distance 12mm;

[0045] (...

Embodiment 2

[0047] This embodiment relates to the anti-corrosion, wear-resistant and anti-fatigue aluminum alloy amorphous powder material, coating preparation method and application in the aviation field of the present invention.

[0048] (1) The composition of the alloy elements is configured according to the atomic percentage: 86% Al, and the rest are Ni, La, Co, Y, and Gd.

[0049] (2) Open the argon gas valve, conduct atomization at a melting temperature of 1250° C. and an atomization pressure of 30 kg to prepare amorphous powder.

[0050] (3) After cooling the atomized aluminum alloy powder, remove the powder collector and sieve to obtain a powder with a particle size distribution of 10-30 μm.

[0051] (4) The obtained aluminum alloy amorphous powder is sprayed on the surface of the light alloy member by cold spraying process, and the spraying process parameters are as follows: carrier gas nitrogen preheating temperature is 380°C, pressure is 2.5MPa, and spraying distance is 15mm; ...

Embodiment 3

[0054] This embodiment relates to the anti-corrosion, wear-resistant and anti-fatigue aluminum alloy amorphous powder material, coating preparation method and application in the aviation field of the present invention.

[0055] (1) The composition of the alloy elements is arranged according to the atomic percentage: 88% Al, and the rest are Ni, La, Co, Y, and Gd.

[0056] (2) Open the argon gas valve, atomize and prepare amorphous powder at a melting temperature of 1300° C. and an atomizing pressure of 30 kg.

[0057] (3) After cooling the atomized aluminum alloy powder, remove the powder collector and sieve to obtain a powder with a particle size distribution of 10-30 μm.

[0058] (4) The obtained aluminum alloy amorphous powder is sprayed on the surface of the light alloy member by cold spraying process, and the spraying process parameters are as follows: carrier gas nitrogen preheating temperature is 410°C, pressure is 2.8MPa, and spraying distance is 20mm;

[0059] (5) Ac...

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Abstract

The invention discloses an aluminum alloy amorphous powder material, a preparation method, application and a coating preparation method. The aluminum alloy amorphous powder material comprises component elements including Al, Ni, La, Co, Y and Gd. The preparation method of the aluminum alloy amorphous powder material comprises the following steps of smelting the aluminum alloy amorphous powder material; conducting gas atomization on molten metal obtained through smelting, and obtaining aluminum alloy amorphous powder, wherein atomization conditions are that the temperature ranges from 1200 DEGC to 1400 DEG C, inert gas is used for protection, and the protective gas pressure ranges from 10 kg to 50 kg; and after the atomized aluminum alloy amorphous powder is cooled, collecting and screening the powder to obtain the aluminum alloy amorphous powder material with the particle size distribution being 10-30 microns. The amorphous content of the aluminum alloy amorphous powder material is upto 90% or above, and the corrosion resistance, wear resistance and fatigue resistance of a metal component are remarkably improved when the aluminum alloy amorphous powder material is used as a coating of the metal component.

Description

technical field [0001] The invention relates to the technical field of amorphous light metals, and more specifically relates to an anti-corrosion, wear-resistant and fatigue-resistant aluminum alloy amorphous powder material, a preparation method, an application and a coating preparation method. Background technique [0002] At present, in the marine service environment, complex environments such as rainwater, seawater, and salt spray are likely to cause corrosion and friction failure of aircraft connectors and rotating parts. At the same time, complex stress problems during flight will also aggravate corrosion problems and even induce major accidents. . [0003] Usually the surface anticorrosion materials of metal connectors include resin, silicone, Al, Zn, AlZn (85%) and other materials; usually the surface protection methods of metal connectors include coating, nickel plating, anodic oxidation, micro-arc oxidation and other methods. Among many anti-corrosion materials, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/08C22C45/08
CPCB22F1/0003B22F9/082C22C45/08
Inventor 靳磊马国佳张乐姜春竹
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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