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Aluminum oxide reinforced copper base composite material and preparation method thereof

A copper-based composite material and alumina technology, which is applied in the field of copper-based composite materials, alumina-reinforced copper-based composite materials and their preparation, can solve the problems such as the inability to fully exert the reinforcing effect of ceramic alumina, poor wetting and dispersibility, etc. To achieve excellent enhancement and promotion effect, good dispersion uniformity, and the effect of improving strength

Active Publication Date: 2019-03-19
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiency in the prior art that ceramic alumina has poor infiltration and dispersibility for copper-based composite materials, which leads to the inability to fully exert the reinforcing effect of ceramic alumina on the copper-based composite material matrix, and provides a Alumina Reinforced Copper Matrix Composite

Method used

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  • Aluminum oxide reinforced copper base composite material and preparation method thereof
  • Aluminum oxide reinforced copper base composite material and preparation method thereof
  • Aluminum oxide reinforced copper base composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Al 2 o 3 particle surface modification

[0071] Will Al 2 o 3 Particles were added to 2g / L sodium lauryl sulfate aqueous solution, ultrasonically dispersed for 30min, in which Al 2 o 3 The ratio of the weight of the particles to the volume of the sodium lauryl sulfate aqueous solution is 0.1g:40ml; after standing for 24 hours, filter, take the filter residue and dry it in vacuum at 80°C for 24 hours to obtain the surface-modified Al 2 o 3 particles.

[0072] By comparing the surface modified Al 2 o 3 Particles with Al without surface modification 2 o 3 Morphological characteristics of the particles, it was found that the surface-modified Al 2 o 3 The surface of the particles is smooth, the impurity content is less, and the dispersion is better.

[0073] Al mentioned in the following examples 2 o 3 The particles refer to the Al particles obtained after surface modification by the above method. 2 o 3 particles.

Embodiment 2

[0075] al 2 o 3 Whisker Surface Modification

[0076] Will Al 2 o 3 Whiskers were added to 2g / L sodium lauryl sulfate aqueous solution, ultrasonically dispersed for 30min, in which Al 2 o 3 The ratio of the weight of the whiskers to the volume of the sodium lauryl sulfate aqueous solution is 0.1g:40ml; after standing for 24 hours, filter, take the filter residue and dry it in vacuum at 80°C for 24 hours to obtain the surface-modified Al 2 o 3 whiskers.

[0077] By comparing the surface modified Al 2 o 3 Whiskers and Al without surface modification 2 o 3 Morphological characteristics of whiskers, found Al without surface modification 2 o 3 Whiskers are mainly in the form of flocculation, uneven dispersion, and more impurities attached to the surface; the surface-modified Al 2 o 3 Whiskers have smooth surface, less impurity content and better dispersion.

[0078] Al mentioned in the following examples 2 o 3 Whiskers refer to the Al alloys obtained after surfa...

Embodiment 3

[0080] Copper Matrix Composite

[0081] (1) get the Al of surface modification treatment in embodiment 1 2 o 3 Particles; (2) in parts by weight, 3.5 parts of surface-modified Al 2 o 3 Particles, 6.5 parts of graphite powder, 1.5 parts of Ti 3 SiC 2 Powder, 5 parts of nickel powder, 5 parts of iron powder, 4.7 parts of tin powder, 3 parts of bismuth powder, 0.5 part of zirconia powder, 0.3 part of lanthanum powder and 70 parts of copper powder are mixed by ball milling at a speed of 350 rpm. The ball milling time is 120min; (3) The composite powder is vacuum hot-pressed and sintered at a temperature of 900°C, the pressure is 20MPa, and the heat preservation and pressure holding time is 2h; (4) The obtained block material is subjected to hot isostatic pressing for 2h, The hot isostatic pressing sintering temperature is 900°C, the pressure is 100MPa, and the aluminum oxide reinforced copper matrix composite material is obtained by rapid cooling.

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Abstract

The invention discloses an aluminum oxide reinforced copper base composite material. The aluminum oxide reinforced copper base composite material is characterized by comprising the following components in percentage by weight: 1-6% of modified ceramic aluminum oxide, 2-10% of graphite, 0.5-5% of Ti3SiC2, 2-8% of nickel, 2-8% of iron, 2-10% of tin, 1-5% of bismuth, 0.1-1% of zirconium oxide, 0.1-0.5% of lanthanum, and the balance of copper; and the modified ceramic aluminum oxide is surface-modified Al2O3 particles and surface-modified Al2O3 whiskers. The surfaces of the Al2O3 particles and theAl2O3 whiskers for the copper base composite material are modified by lauryl sodium sulfate water solution; through surface modification, the impurity content of the ceramic aluminum oxide is obviously reduced; multiple metal elements are matched for assisting and cooperating with a welding structure, so that the dispersibility is excellent, the ceramic aluminum oxide and a copper basal body arefirmly bonded, and the acceleration effect is prominently improved; and when the effect of external force is suffered, through excellent combined interfaces, the load transfer effect can be effectively achieved, the stress concentration is reduced, and defects are reduced.

Description

technical field [0001] The invention relates to a copper-based composite material, in particular to an alumina-reinforced copper-based composite material and a preparation method thereof, belonging to the technical field of composite material preparation. Background technique [0002] Among metal matrix composites, copper matrix composites are widely used as electronic materials, slider materials, contact materials, heat exchange materials, etc. due to their excellent electrical and thermal conductivity. Therefore, the preparation methods and properties of copper-based composites have attracted much attention. The emergence of various ceramic particle reinforced copper matrix composites, fiber reinforced copper matrix composites, whisker reinforced copper matrix composites and carbon material reinforced copper matrix composites has greatly improved the performance of copper matrix composites, and the scope of application has also been greatly improved. Great extension. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/14C22C47/04C22C49/02C22C49/14C22C101/04C22C121/02
CPCC22C47/04C22C47/14C22C49/02C22C49/14
Inventor 蒋小松舒锐付学敏谌金梅张归航邵甄胰朱德贵
Owner SOUTHWEST JIAOTONG UNIV
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