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Carbon fiber reinforced aluminum base composite material for brake disc and preparation method of composite material

A technology for strengthening aluminum-based and composite materials, applied in the field of brake discs, can solve the problems of poor dispersion uniformity, large volume fraction of particle phases, and needs to be improved, and achieves good dispersion, low volume fraction, and lightweight effects.

Inactive Publication Date: 2014-03-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the brake disc made of aluminum alloy in the prior art still needs to be improved in terms of strength, hardness, wear resistance, fatigue resistance, etc.; For the moving disc, the aluminum matrix composite material reinforced with silicon carbide particles is proposed. The application number 200610137913.3 proposes the aluminum matrix composite material brake disc using titanium boride and silicon carbide as the reinforcing phase. At present, the particle reinforced aluminum matrix composite material is used as the brake disc The outstanding problem is that due to the large particle phase volume fraction and poor dispersion uniformity, the stability of the material's strength, wear resistance and fatigue resistance needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) The chemical composition (mass %) of the base aluminum alloy used is:

[0022] Copper 3.0, silicon 11.0, zinc 0.80, iron 0.5, magnesium 0.2, manganese 0.3, nickel 0.2, tin 0.3, and the balance is aluminum 83.7.

[0023] 2) The scale characteristics of the carbon fibers used are that the diameter is in the range of 1-10 nanometers (nm), and the ratio of fiber length to fiber diameter is in the range of 1-10; the amount of micro-nano carbon fiber added (mass %) is 0.5%.

[0024] The implementation steps are:

[0025] a. Carbon fiber and aluminum powder are fully mixed evenly in a mass ratio of 1:9, and are pressed in a vacuum briquetting machine to prepare aluminum-based blocks containing carbon fibers. The vacuum degree during briquetting is 0.01Pa, and The required pressure is 4×10 3 Kg / m 2 , the size of the obtained briquette is 3×3×3cm 3 ;

[0026] b. For the smelting of aluminum matrix alloy, adjust the components of copper, silicon, zinc, magnesium, iron, ma...

Embodiment 2

[0029] 1) The chemical composition (mass %) of the base aluminum alloy used is:

[0030] Copper 4.0, silicon 10.0, zinc 0.80, iron 0.5, magnesium 0.2, manganese 0.3, nickel 0.2, tin 0.3, and the balance is aluminum 83.7.

[0031] 2) The scale characteristics of the carbon fibers used are that the diameter is in the range of 1-100 nanometers (nm), the ratio of fiber length to fiber diameter is in the range of 1-100; the amount of micro-nano carbon fibers (mass %) is 3%.

[0032] The implementation steps are:

[0033] a, carbon fiber and aluminum powder are fully mixed evenly according to the ratio of mass ratio 3:7, briquetting in a vacuum briquetting machine to prepare an aluminum-based block body containing carbon fiber, the vacuum degree during briquetting is 0.01Pa, The required pressure is 4×10 3 Kg / m 2 , the size of the obtained briquette is 2×2×2cm 3 ;

[0034] b. For the smelting of aluminum matrix alloy, adjust the components of copper, silicon, zinc, magnesium, i...

Embodiment 3

[0037] 1) The chemical composition (mass %) of the base aluminum alloy used is:

[0038] Copper 2.0, silicon 10.0, zinc 0.80, iron 0.5, magnesium 0.2, manganese 0.3, nickel 0.2, tin 0.3, and the balance is aluminum 85.7;

[0039] 2) The scale characteristics of the carbon fiber used are that the diameter is in the range of 1-50 nanometers (nm), the ratio of fiber length to fiber diameter is in the range of 1-50; the amount of micro-nano carbon fiber added (mass %) is 1.5%;

[0040] The implementation steps are:

[0041] a, carbon fiber and aluminum powder are fully mixed evenly according to the ratio of mass ratio 3:7, and are pressed in a vacuum briquetting machine to prepare an aluminum-based block body containing carbon fiber; the vacuum degree during briquetting is 0.01Pa, and the briquetting time The required pressure is 4×10 3 Kg / m 2 , the size of the obtained briquette is 4×4×4cm 3 ;

[0042] b. For the smelting of aluminum matrix alloy, adjust the components of co...

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Abstract

The invention relates to an aluminum alloy brake disc, and in particular relates to a carbon fiber reinforced aluminum base composite material for the brake disc and a preparation method of the composite material. The carbon fiber reinforced aluminum base composite material for the brake disc is prepared by taking an aluminum-silicon-copper series aluminum alloy as a matrix and micro-nano scale carbon fibers as a reinforcing phase of the aluminum alloy matrix, and performing melt synthesis-compression molding. Compared with the prior art, through carbon fiber reinforcement, the fatigue resistance and wear resistance of the material are improved, and the material is good in braking effect and long in service life and can be applied to brake discs of various motor vehicles.

Description

technical field [0001] The invention relates to a brake disc made of aluminum alloy, in particular to a carbon fiber reinforced aluminum-based composite material for a brake disc and a preparation method thereof. Background technique [0002] At present, the material of the brake disc is mainly made of cast iron (steel). The biggest disadvantage of the cast iron brake disc is that the heat dissipation is slow. When braking at high speed or for a long time, it is easy to cause the temperature of the brake disc to be too high, which will lead to the reduction of friction and cause the brake Therefore, the brake discs of high-speed rail vehicles such as lightweight vehicles and light rails have begun to use aluminum alloy brake discs, which can dissipate heat more than four times faster than cast iron brake discs, which can effectively reduce the frictional heat generated during the braking process. Accumulation can greatly improve the thermal braking performance of the car, sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/06C22C49/14C22C47/12C22C101/10
Inventor 王宏明李桂荣
Owner JIANGSU UNIV
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