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Method for preparing copper-based amorphous composite coating through laser cladding

A technology of laser cladding and composite coating, which is applied in the coating, metal material coating process, etc., can solve the problems of excessive dilution of the substrate, poor bonding force between the coating and the substrate, and poor coating performance, so as to increase the absorption rate , Improve metallurgical bonding, improve the effect of low hardness

Active Publication Date: 2021-10-29
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned methods all have different degrees of defects, such as poor adhesion between the coating and the substrate formed by the thermal spraying process, and the surfacing method will cause excessive dilution of the substrate, resulting in poor coating performance.

Method used

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  • Method for preparing copper-based amorphous composite coating through laser cladding
  • Method for preparing copper-based amorphous composite coating through laser cladding
  • Method for preparing copper-based amorphous composite coating through laser cladding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing a copper-based amorphous composite coating by laser cladding, the atomic percentage of each component of the smelted alloy is Cu 50-x Hf 44-2y Al 6+y Mo x Ta y , where x is 3 and y is 2.

[0032] (1) Preparation of smelted alloy powder

[0033] The atomic percentage of each component of the smelted alloy is: Cu 47 Hf 40 Al 8 Mo 3 Ta 2 .

[0034] Use 360-mesh sandpaper to polish the Cu sheet, Hf block, Al block, Mo wire and Ta block raw materials with a purity of 99.0%, convert the atomic percentage of each component of the smelted alloy into the corresponding mass percentage, and then weigh the corresponding mass percentage according to the mass percentage. Metal Cu, Hf, Al, Mo and Ta, and place each raw material in a vacuum arc melting furnace, increase the melting current to 150A, and repeat the melting three times, each time for 10 to 15 seconds, to ensure that the formed alloy composition is uniform; After the obtained alloy is crus...

Embodiment 2

[0042] The difference between this embodiment and embodiment 1 is: x=3, y=1, and the atomic percentage of each component of the smelted alloy is Cu 47 Hf 42 Al 7 Mo 3 Ta 1 ; Set the laser power to 2200W and the scanning speed to 10mm / s.

[0043] Others are the same as in Example 1, and a copper-based amorphous composite coating can be obtained.

Embodiment 3

[0045] The difference between this embodiment and embodiment 1 is: x=2, y=2, and the atomic percentage of each component of the smelted alloy is Cu 48 Hf 40 Al 8 Mo 2 Ta 2 ; Set the laser power to 2400W and the scanning speed to 12mm / s.

[0046]Others are the same as in Example 1, and a copper-based amorphous composite coating can be obtained.

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Abstract

The invention relates to a method for preparing a copper-based amorphous composite coating through laser cladding, and belongs to the technical field of material surface strengthening. The method comprises four preparation steps, namely, preparation of smelting alloy powder, pretreatment of a copper matrix, powder presetting treatment and laser cladding machining. According to the method, the defects that pure copper is low in hardness, poor in friction performance and the like are effectively overcome, good metallurgical bonding of a copper-based amorphous composite coating and a pure copper matrix is achieved, and the formed composite coating has the advantages of being compact in structure, uniform in tissue, high in hardness, good in abrasion resistance, free of cracks, high in amorphous content and the like.

Description

technical field [0001] The invention relates to a method for preparing a copper-based amorphous composite coating by laser cladding, and belongs to the technical field of material surface strengthening. Background technique [0002] Copper metal materials have excellent electrical and thermal conductivity, and are rich in toughness and ductility. They play a pivotal role in electrical, mechanical, metallurgical and other industries. However, copper metal materials have low strength and hardness and are difficult to use for structural components. At the same time Its friction resistance is poor and cannot meet the high-strength and wear-resistant working conditions, which further hinders the development and application of copper metal materials. As a large copper production country, my country has ranked first in the world for many years in a row. However, my country's copper industry is large but not strong. It competes with world-class enterprises on the same stage. The gap...

Claims

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Application Information

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IPC IPC(8): C23C24/10B22F9/04C22C45/00C22F1/08C21D1/18
CPCC23C24/106B22F9/04C22C45/001C22F1/08C22F1/002
Inventor 战再吉钱政曹海要
Owner YANSHAN UNIV
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