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Iron based amorphous nanocrystalline composite coating

An iron-based amorphous and nanocrystalline technology, which can be used in coatings, metal material coating processes, melting spray plating, etc., and can solve the problems of high cost and limited application and promotion.

Inactive Publication Date: 2009-07-29
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, amorphous and nanocrystalline coating materials are mainly concentrated on materials with strong amorphous forming ability and high alloy content, which leads to high cost and limited application and promotion.

Method used

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  • Iron based amorphous nanocrystalline composite coating
  • Iron based amorphous nanocrystalline composite coating
  • Iron based amorphous nanocrystalline composite coating

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] The preparation method of the iron-based thermal spraying drug core wire can adopt the method of the prior art, for example, the method comprising the following steps:

[0037] 1) rolling the steel strip with X1 composition into U shape, then adding the powder with X2 composition in the U-shaped groove, the total composition X of X1 and X2 is within the composition scope of the present invention;

[0038] 2) Close the U-shaped groove, wrap the powder core in it, form, draw and reduce the diameter, and finally obtain the required wire.

[0039] The iron-based thermal spraying powder can be obtained, for example, in the following ways: directly prepare the metal powder with pure metal powder or alloy powder; prepare the required components in powder or block form with pure metal or alloy, and atomize it into powder. The atomization method can be adopted but not limited to water atomization or gas atomization; the pure metal or alloy is formulated into the required compos...

Embodiment

[0048] In this example, the amorphous and nanocrystalline coating of the present invention was prepared by twin-wire arc spraying method and plasma spraying method, and the composition of the coating is shown in Table 1.

[0049] Specifically, when the coating is prepared by twin-wire arc spraying, the above-mentioned components are prepared into a drug core wire. Among them, the coating is FeCr16 steel strip. According to the composition shown in Table 1, the drug core is selected from Fe powder, Cr powder, Ni powder, Si powder, Cu powder, Mo powder, V powder, Zr powder, Y powder, Ga powder, Al powder, Sn powder, WC powder , Fe-B powder, Fe-Mn powder, Fe-P powder and Fe-Nb powder. The particle size of the powder is 60-200 mesh. The overall composition of the obtained powder core wire satisfies the above table 1 composition shown. The coating was prepared on the Q235 steel plate by arc spraying. The spraying process parameters were: arc voltage 34V, working current about 200...

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Abstract

The invention relates to a Fe-based amorphous nanocrystalline coating, the composition of the coating is expressed by atomic ratio as follows: Fe100-a-b-c-d-eNiaCrbPcTdDe, wherein, a is 0.5-8, b is 5-26, c is 3-15, d is 8-20 and e is 0-8; T is one or more of B, C and Si, and D is five or less of Y, V, Zr, Mo, Nb, Cu, Al, Ga, Sn, W and Mn. The coating can be hot spray coating, electric arc spray coating or plasma spray coating.

Description

technical field [0001] The invention belongs to the field of spray coating. More specifically, the present invention relates to an iron-based amorphous nanocrystalline composite coating with high corrosion resistance and wear resistance. Background technique [0002] Corrosion and wear are the main failure modes of metal parts, which cause great losses to the national economy every year. In order to improve the reliability of parts and prolong their service life, researchers continue to develop materials and technologies to endow parts with high temperature resistance, corrosion resistance, wear resistance and other properties, while taking economical into account. The main feature of amorphous alloys is that the three-dimensional space of atoms is arranged in a topologically disordered manner, and there are no defects such as grain boundaries and stacking faults in the structure. It mainly uses metal bonds as its structural characteristics, and there is no long-range order...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02C23C4/06
Inventor 薄希辉倪晓俊卢志超周少雄吴嘉伟赵新彬郭金花李德仁孙克
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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