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Thermal spraying nickel-based self-fused alloy amorphous coating

A nickel-based self-fluxing alloy, amorphous coating technology, applied in the field of materials, can solve the problems of difficult corrosion resistance and wear resistance, high cost of amorphous coating, achieve dense coating, good thermal stability, huge The effect of the application foreground

Inactive Publication Date: 2015-04-29
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of thermal spraying nickel-based self-fluxing alloy amorphous coating, which is aimed at the difficulty of simultaneously improving corrosion resistance and wear resistance in self-fluxing alloys, and the high cost of amorphous coatings. The low-cost nickel-based self-fluxing alloy is used as spray powder, and the thermal spraying method is used to prepare an amorphous nickel-based self-fluxing alloy coating, which has excellent comprehensive properties of wear resistance and corrosion resistance

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0022] A thermal spraying nickel-based self-fluxing alloy amorphous coating is prepared by using a water atomization method to prepare nickel-based self-fluxing alloy as spray powder; after the surface of the workpiece to be sprayed is roughened and pretreated, it is sprayed by plasma spraying. It is sprayed on the surface of the workpiece to form the nickel-based self-fluxing alloy amorphous coating. During the spraying process, cold air can be used to forcibly cool the surface of the substrate to increase the cooling rate of the coating. After spraying, the workpiece can be used after a proper amount of fine grinding and other machining.

[0023] The element composition and the weight percentage of each element of the nickel-based self-fluxing alloy are: Cr 18%, B 4%, Si 4%, C 0.5%, Fe 3%, Ni 70.5%, and the particle size range of the spray powder formed by it is 50-70μm.

[0024] The process conditions of the plasma spraying are: arc voltage 55V; spraying current 450A; main...

Embodiment 2

[0030] A thermal spraying nickel-based self-fluxing alloy amorphous coating is prepared by using a water atomization method to prepare nickel-based self-fluxing alloy as spray powder; after the surface of the workpiece to be sprayed is roughened and pretreated, it is sprayed by plasma spraying. It is sprayed on the surface of the workpiece to form the nickel-based self-fluxing alloy amorphous coating. During the spraying process, cold air can be used to forcibly cool the surface of the substrate to increase the cooling rate of the coating. After spraying, the workpiece can be used after a proper amount of fine grinding and other machining.

[0031] The element composition and the weight percentage of each element of the nickel-based self-fluxing alloy are: Cr 20%, B 5%, Si 3%, C 1.1%, Fe 5%, Ni 68.9%, and the particle size range of the spray powder formed by it is 44-80μm.

[0032] The process conditions of the plasma spraying are: arc voltage 55V; spraying current 450A; main...

Embodiment 3

[0034] A thermal spraying nickel-based self-fluxing alloy amorphous coating is prepared by using a water atomization method to prepare nickel-based self-fluxing alloy as spray powder; after the surface of the workpiece to be sprayed is roughened and pretreated, it is sprayed by plasma spraying. It is sprayed on the surface of the workpiece to form the nickel-based self-fluxing alloy amorphous coating. During the spraying process, cold air can be used to forcibly cool the surface of the substrate to increase the cooling rate of the coating. After spraying, the workpiece can be used after a proper amount of fine grinding and other machining.

[0035] The elemental composition and weight percent of each element of the nickel-based self-fluxing alloy are: Cr 15%, B 3%, Si 5.5%, C 0.6%, Fe 3%, Ni 72.9%, and the particle size range of the spray powder formed by it is 70-100μm.

[0036] The process conditions of the plasma spraying are: arc voltage 60V; spraying current 500A; main g...

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Abstract

The invention discloses a thermal spraying nickel-based self-fused alloy amorphous coating which is prepared by preparing a nickel-based self-fused alloy into spray powder and spraying on the surface of a workpiece in a thermal spraying manner. The thermal spraying nickel-based self-fused alloy amorphous coating comprises the following elements in percentage by weight: 15-20% of Cr, 3.0-5.0% of B, 3.0-5.0% of Si, 0.5-1.1% of C, 3-5% of Fe and the balance of Ni, totaling 100%. The thermal spraying nickel-based self-fused alloy amorphous coating is good in wearing resistance and corrosion resistance, convenient to prepare, low in production cost and relatively good in application prospect.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a thermally sprayed nickel-based self-fluxing alloy amorphous coating. Background technique [0002] Amorphous alloys have been extensively studied because of their unique and excellent properties. However, the preparation of amorphous alloys requires a high cooling rate, so their size is limited, which limits the application of amorphous alloys as structural materials, and the application of amorphous alloys as coatings is a promising research direction. Thermal spraying technology is a kind of widely used surface coating preparation technology. The cooling rate of the coating is high and the preparation efficiency is high. It is an effective means to prepare amorphous coatings. In recent years, iron-based and molybdenum-based amorphous thermal spray coatings have been developed, and the prepared coatings have excellent wear resistance and corrosion resistance. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/12C22C45/04C23C4/129C23C4/134
Inventor 郑振环李强
Owner FUZHOU UNIV
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