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Silicon dioxide aerogel reinforced copper-based composite material and preparation method thereof

A technology of copper-based composite materials and silicon dioxide, applied in the field of particle-reinforced metal-based composite materials, metal materials and their preparation, to achieve the effects of improved mechanical properties, low cost, and excellent electrical and thermal conductivity

Active Publication Date: 2020-07-07
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the preparation process of silica airgel reinforced copper matrix composites.

Method used

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  • Silicon dioxide aerogel reinforced copper-based composite material and preparation method thereof
  • Silicon dioxide aerogel reinforced copper-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of Cu-1wt.%SiO 2 Airgel composite material, its production process method is: (1) Cu-SiO 2 Preparation of airgel master alloy: batching-mixing-cold pressing; (2) preparation of composite materials: vacuum melting-casting.

[0037] The specific process is: according to Table 1 ingredient distribution. First, prepare Cu-10wt.%SiO 2 Airgel master alloy, mix electrolytic copper powder and silica airgel in a double-cone high-efficiency mixer for 12 hours, and then press the mixed powder under a hydraulic press with a pressure of 15MPa to form a block. Finally, T2 pure copper and Cu-10wt.% SiO prepared according to the target composition 2 The master alloy is placed in a vacuum medium frequency induction furnace and melted at 1200°C. After the pure copper is melted, the temperature is lowered to 1150°C before pouring. The properties of the prepared finished products are shown in Table 1.

Embodiment 2

[0039] Preparation of Cu-1.5wt.%SiO 2 Airgel composite material, its production process method is: (1) Cu-SiO 2 Preparation of airgel master alloy: batching-mixing-cold pressing; (2) preparation of composite materials: vacuum melting-casting.

[0040] The specific process is: according to Table 1 ingredient distribution. First, prepare Cu-10wt.%SiO 2 Airgel master alloy, mix electrolytic copper powder and silica airgel in a double-cone high-efficiency mixer for 12 hours, and then press the mixed powder under a hydraulic press with a pressure of 15MPa to form a block. Finally, T2 pure copper and Cu-10wt.% SiO prepared according to the target composition 2 The master alloy is placed in a vacuum medium frequency induction furnace and melted at 1250°C. After the pure copper is melted, the temperature is lowered to 1150°C before pouring. The properties of the prepared finished products are shown in Table 1.

Embodiment 3

[0042] Preparation of Cu-2wt.%SiO 2 Airgel composite material, its production process method is: (1) Cu-SiO 2Preparation of airgel master alloy: batching-mixing-cold pressing; (2) preparation of composite materials: vacuum melting-casting.

[0043] The specific process is: according to Table 1 ingredient distribution. First, prepare Cu-10wt.%SiO 2 Airgel master alloy, mix electrolytic copper powder and silica airgel in a double-cone high-efficiency mixer for 12 hours, and then press the mixed powder under a hydraulic press with a pressure of 15MPa to form a block. Finally, T2 pure copper and Cu-10wt.% SiO prepared according to the target composition 2 The master alloy is placed in a vacuum medium frequency induction furnace and melted at 1250°C. After the pure copper is melted, the temperature is lowered to 1150°C before pouring. The properties of the prepared finished products are shown in Table 1.

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Abstract

The invention relates to a silicon dioxide aerogel reinforced copper-based composite material and a preparation method thereof, and belongs to the technical field of metal materials and preparation thereof. The composite material comprises, by mass, 5% or less of silicon dioxide aerogel and the balance copper. During preparation, copper powder and silicon dioxide aerogel powder are weighed according to a proportion and mixed to be uniform, the mixed powder is pressed into a block in a steel die by using a hydraulic press to obtain a copper-silicon dioxide intermediate alloy; the copper-silicondioxide intermediate alloy and pure copper are molten through a vacuum induction furnace and cast into an ingot, and the silicon dioxide aerogel reinforced copper-based composite material is obtained. Compared with pure copper ingot casting, the copper-based composite material prepared by the preparation method has higher comprehensive mechanical property and lower density and conductivity, and therefore the material is suitable for the field with high requirements on the mechanical property and the conductivity.

Description

technical field [0001] The invention relates to a silica airgel reinforced copper-based composite material and a preparation method thereof, belonging to the technical field of metal materials and their preparation, in particular to the technical field of particle-reinforced metal-based composite materials. [0002] technical background [0003] Although pure copper has good electrical and thermal conductivity, it has low strength, poor wear resistance, and is easy to soften and deform at high temperatures, so its application in many occasions is limited. And through a certain process, the second phase particles with high melting point, wear resistance and corrosion resistance are added to the copper matrix, and the composite material prepared not only maintains the excellent electrical and thermal conductivity of copper itself, but also improves the mechanical properties of the alloy. and friction and wear resistance. [0004] The so-called second-phase particle-reinforced ...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/05C22C1/03
CPCC22C1/03C22C1/0425C22C1/05C22C9/00
Inventor 王强松杨书瑜刘芳
Owner GRIMAT ENG INST CO LTD
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