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Dispersion strengthening copper-based composite material and preparation method thereof

A technology of dispersion strengthening copper and composite materials, which is applied in the field of composite materials and preparation, can solve problems such as difficulty in reinforcement, and achieve high mechanical properties, cost savings, and excellent high temperature softening resistance

Inactive Publication Date: 2012-09-12
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since Al and Al 2 o 3 Its physical and chemical properties lead to uniformly dispersed nano-scale Al 2 o 3 It is difficult to strengthen, which determines the Cu-Al 2 o 3 Composite materials can only be used in occasions that have medium requirements for electrical conductivity and strength and low temperature requirements

Method used

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  • Dispersion strengthening copper-based composite material and preparation method thereof
  • Dispersion strengthening copper-based composite material and preparation method thereof
  • Dispersion strengthening copper-based composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] see figure 1 , smelting Cu-0.4wt.%Y alloy ingots with a vacuum intermediate frequency induction furnace, and rolling the alloy ingots into plates with a thickness of 0.5mm, at 800 o C Insulate in an industrial nitrogen atmosphere for 2 hours, carry out internal oxidation treatment on the sample, so that Y is completely oxidized into Y 2 o 3 , after the 600 o C hydrogen atmosphere reduction for 1 hour.

[0025] Yttrium oxide dispersion strengthened copper matrix composite material was prepared through the above process, Y 2 o 3 The particles are evenly distributed on the copper substrate, the average particle size is 7nm, and the average particle distance is 25nm, see figure 2 . The properties are: tensile strength 584MPa, electrical conductivity 94%IACS, softening temperature 900 o c.

Embodiment 2

[0027] see figure 1 , smelting Cu-0.4wt.%Y alloy ingots with a vacuum intermediate frequency induction furnace, and rolling the alloy ingots into plates with a thickness of 1mm, at 900 o C Insulate in an industrial nitrogen atmosphere for 3 hours, and perform internal oxidation treatment on the sample, so that Y is completely oxidized into Y 2 o 3 , after the 600 o C hydrogen atmosphere reduction for 1 hour.

[0028] The properties of the copper-based composite material prepared by the above process are: tensile strength 587MPa, electrical conductivity 94%IACS, softening temperature 900 o c.

Embodiment 3

[0030] see figure 1 , smelting Cu-0.4wt.%Y alloy ingots with a vacuum intermediate frequency induction furnace, and rolling the alloy ingots into plates with a thickness of 5mm, at 1000 o C Insulate in an industrial nitrogen atmosphere for 5 hours, and perform internal oxidation treatment on the sample, so that Y is completely oxidized into Y 2 o 3 , after the 600 o C hydrogen atmosphere reduction for 1 hour.

[0031] The properties of the copper-based composite material prepared by the above process are: tensile strength 580MPa, electrical conductivity 92%IACS, softening temperature 900 o c.

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Abstract

The invention relates to a dispersion strengthening copper-based composite material and a preparation method thereof. The dispersion strengthening copper-based composite material and the preparation method thereof are characterized in that A dispersion strengthening phase is yttrium oxide, and the content of yttrium oxide in copper is 1-2.5 percent by weight, and the preparation method comprises the processes of alloy smelting, rolling, internal oxidation, reduction and the like. The preparation method has the advantages of short process and low production cost. The tensile strength of the product is greater than 550 MPa, the conductivity exceeds 90 percent IACS (international annealed copper standard), and the softening temperature is higher than 900 DEG C. The dispersion strengthening copper-based composite material has higher mechanical property, excellent electrical conductivity and high-temperature softening resistance. The Y2O3 granulate dispersion strengthening copper-based composite material prepared in the invention can be applied to computer integrated circuit lead frames, resistance welding electrodes for automobile industry, linings of crystallizers of continuous casting machines for metallurgical industry, equipment and carrier rockets, electric car and electric power train aerial conductor and the like, and the character of service and the service life can be obviously improved.

Description

technical field [0001] The invention belongs to the field of metal materials and preparations, in particular to composite materials and preparation methods. Background technique [0002] Due to their excellent physical and mechanical properties, copper and copper alloys are widely used in many fields such as machinery manufacturing and electrical and electronic industries. However, with the development of high-tech industries such as aviation and aerospace, especially the rapid development of the microelectronics industry, the performance of traditional copper alloys can no longer meet the requirements, especially in terms of strength and conductivity. A dispersion-strengthened copper-based composite material with good electrical and thermal conductivity and excellent mechanical properties is prepared by introducing fine and dispersed second-phase particles into the copper matrix. The mechanism of dispersion strengthening is to improve the mechanical properties of materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C32/00
Inventor 唐建成卓海鸥叶楠覃德清李婷
Owner NANCHANG UNIV
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