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Method for preparing high-strength and high-conductivity copper-based alloy coating by means of laser-induction hybrid cladding

A technology of copper-based alloy and base alloy, which is applied in the coating process and coating of metal materials, can solve the problems of easy oxidation and other problems, and achieve the effect of compact structure, reduced temperature gradient and low dilution rate

Inactive Publication Date: 2013-02-06
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The special copper-based alloy powder used in the present invention has the characteristics of good fluidity and excellent high-temperature oxidation resistance after electroless nickel plating to form nickel-clad copper-based alloy powder with a core-shell structure, which overcomes the laser-induction composite cladding The problem of easy oxidation at high temperature during the process

Method used

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  • Method for preparing high-strength and high-conductivity copper-based alloy coating by means of laser-induction hybrid cladding
  • Method for preparing high-strength and high-conductivity copper-based alloy coating by means of laser-induction hybrid cladding
  • Method for preparing high-strength and high-conductivity copper-based alloy coating by means of laser-induction hybrid cladding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Laser-induction composite cladding was used on the surface of LY12 aluminum alloy (Al-4.4Cu-1.5Mg-0.6Mn) to prepare a high-strength and high-conductivity copper-based alloy coating with a size of 80 mm×50mm×1.2 mm (length×width×height). , The performance tested is: hardness up to 300HBS, tensile strength 820MPa, electrical conductivity 78%IACS, softening temperature 550℃, dilution rate 8.5%, wear resistance can be improved by 2.5 times compared with LY12 aluminum alloy, dense microstructure, no pores It forms a metallurgical bond with the crack and the matrix. The specific implementation process is as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 Shown:

[0028] (1) First, the special copper-based alloy powder 20 is pickled and activated. Among them, the chemical composition of the special copper-based alloy powder 20 is: Al 5.0 wt.%, Cr 0.8 wt.%, Zr 0.05 wt.%, Ni 2 wt.%, Fe 10 wt.%, the balance is Cu, the average grain The diameter is 20 μm; the pick...

Embodiment 2

[0035] The surface of AM60B magnesium alloy (Mg-8.5Al-0.2Mn-0.55Zn-0.1Si-0.03Cu-0.002Ni-0.005Fe) was clad by laser-induction composite cladding, and the preparation size was 60 mm×30 mm×2.0 mm (length× Width × height) high-strength and high-conductivity copper-based alloy coating, the performance of the test is: hardness up to 350HBS, tensile strength 850MPa, electrical conductivity 82% IACS, softening temperature 580 ℃, dilution rate 7.5%, wear resistance compared to AM60B magnesium alloy It can be improved by 4 times, the microstructure is dense, there are no pores and cracks, and it forms a metallurgical bond with the matrix. The specific implementation process is as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 Shown:

[0036] (1) First, the special copper-based alloy powder 20 is pickled and activated. Among them, the chemical composition of the special copper-based alloy powder 20 is: Al 10 wt.%, Cr 0.5 wt.%, Zr 0.08 wt.%, Ni 3.5 wt.%, Fe 15 wt.%, the b...

Embodiment 3

[0043] Laser-induction composite cladding is used on the surface of QA15 copper alloy (Cu-7Al) to prepare a high-strength and high-conductivity copper-based alloy coating with a size of 120 mm × 60 mm × 2.5 mm (length × width × height). The detected properties are: hardness Up to 400HBS, tensile strength 870MPa, electrical conductivity 85%IACS, softening temperature 600°C, dilution rate 7.0%, wear resistance can be increased by 5 times compared with QA15 copper alloy, dense microstructure, no pores and cracks, and metallurgy with the matrix combined. The specific implementation process is as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 Shown:

[0044] (1) First, the special copper-based alloy powder 20 is pickled and activated. Among them, the chemical composition of the special copper-based alloy powder 20 is: Al 15 wt.%, Cr 1.5 wt.%, Zr 1.0 wt.%, Ni 4.5 wt.%, Fe 5 wt.%, the balance is Cu, the average grain The diameter is 45 μm; the pickling and activatio...

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Abstract

The invention discloses a method for preparing a high-strength and high-conductivity copper-based alloy coating by means of laser-induction hybrid cladding, which is characterized by comprising the following steps of: firstly, performing chemical nickel-plating treatment on a special copper-based alloy powder to form a nickel-coated copper-based alloy powder with a core-shell structure; secondly, performing oil removal, rust removal, surface activation and chemical nickel-plating treatment on the surface of a matrix; and finally, preparing the high-conductivity copper-based alloy coating on the surface of the matrix by means of laser-induction hybrid cladding. The method disclosed by the invention has the advantages of being high in machining efficiency, low in cost, good in technical and economic benefits, and has a wide application prospect in the surface reinforcement and repair of fields of aeronautics, astronautics, automobile, metallurgy, electricity and the like, in which aluminium and aluminium alloy, magnesium and magnesium alloy, and copper and copper alloy are widely used.

Description

technical field [0001] The invention relates to a method for preparing a high-strength and high-conductivity copper-based alloy coating, in particular to a method for preparing a high-strength and high-conductivity copper-based alloy coating by laser-induction composite cladding. Background technique [0002] A high-strength and high-conductivity copper-based alloy coating is prepared on the surface of a substrate with a certain strength, which can not only give full play to the advantages of plasticity, toughness or high specific strength of the substrate, but also make full use of the high-strength and high-conductivity copper-based alloy coating. Electrical and thermal conductivity, high hardness, high wear resistance and high corrosion resistance, thereby greatly improving the overall performance of the substrate (high strength, high toughness, high specific strength, high specific stiffness, high hardness and high wear resistance, high electrical conductivity combined w...

Claims

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Application Information

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IPC IPC(8): C23C24/10
Inventor 周圣丰戴晓琴张天佑吴超
Owner NANCHANG HANGKONG UNIVERSITY
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