Abrasion-resistant composite material for automobile brake pads

A composite material, automobile brake technology, applied in the field of auto parts, can solve the problems of poor material quality stability, hardness, tensile strength, mechanical properties, etc., to achieve good compatibility, thermal stability, high temperature stability good effect

Inactive Publication Date: 2016-09-28
HEFEI HAIYUAN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the article "Preparation and Mechanical Properties of Graphene Reinforced Aluminum Matrix Composite Materials", Gao Xin used Hummers to prepare graphene oxide with a large amount of negative charges, and then treated the aluminum powder with a cationic surfactant to make the surface positively charged, and Graphene is evenly adsorbed on the surface of aluminum powder by electrostatic self-assembly, and finally the aluminum matrix composite is prepared by hot pressing and sintering. However, the amount of surfactant and the amount of graphene added will affect the sintering performance and affect the material Hardness, tensile strength, mechanical properties, etc. are greatly affected, and the stability of material quality is poor

Method used

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Embodiment Construction

[0014] A wear-resistant composite material for automobile brake pads, prepared from the following raw materials in parts by weight (kg): aluminum 95, cobalt 0.03, iron 3, zinc 0.3, copper sulfide 1.2, molybdenum 0.3, nickel 0.1, magnesium 0.24, Hexadecyltrimethylammonium bromide 0.06, graphene oxide 3, zirconium hydride 5, hexachloroethane 0.88, titanium dioxide 0.2, carboxymethyl cellulose sodium 0.24, tungsten disulfide 0.55, carbide slag 0.6, impurities ≤ 0.01 , appropriate amount of deionized water.

[0015] The wear-resistant composite material for automobile brake pads is prepared by the following specific steps:

[0016] (1) Dissolve cetyltrimethylammonium bromide with 6 times the amount of deionized water, then add 10% of the total amount of aluminum powder to ultrasonically disperse for 20 minutes, then magnetically stir at room temperature for 1 hour, filter, wash and dry Then add graphene oxide to 50ml deionized water for ultrasonic dispersion for 1 hour, add alumi...

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PUM

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Abstract

The invention discloses an abrasion-resistant composite material for automobile brake pads. The abrasion-resistant composite material for automobile brake pads is prepared from, by weight, 95-98 parts of aluminum, 0.03-0.05 part of cobalt, 3-3.5 parts of iron, 0.3-0.4 part of zinc, 1.2-2 parts of copper sulphide, 0.3-0.4 part of molybdenum, 0.1-0.2 part of nickel, 0.24-0.3 part of magnesium, 0.06-0.1 part of hexadecyl trimethyl ammonium bromide, 3-5 parts of graphene oxide, 5-8 parts of zirconium hydride, 0.88-1 part of hexachloroethane, 0.2-0.3 part of titanium dioxide, 0.24-0.3 part of sodium carboxymethylcellulose, 0.55-0.8 part of tungsten disulfide, 0.6-0.8 part of carbide slag, 0.01 or less of impurities and a proper amount of deionized water. The prepared alloy material has good strength, corrosion resistance, abrasion resistance, high-temperature stability and thermal stability, and is durable and high in safety when applied to automobile brake pads.

Description

technical field [0001] The invention relates to the technical field of automobile parts, in particular to a wear-resistant composite material for automobile brake pads. Background technique [0002] Aluminum matrix composites have high specific strength, specific stiffness, and specific modulus of elasticity, as well as good wear resistance and high temperature resistance, so they have received extensive attention. The commonly used techniques for the preparation of particle-reinforced aluminum matrix composites include powder metallurgy and casting. However, the process equipment of the powder metallurgy method is complex and the cost is high, and it is not easy to prepare large-volume and complex-shaped parts. Moreover, there are dangers such as powder combustion and explosion during the production process. The casting method has simple process and convenient operation, can produce large-volume composite materials, has less equipment investment, low production cost, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C32/00C22C1/08C22C1/02C22C1/06
CPCC22C1/026C22C1/06C22C1/08C22C21/00C22C32/0084C22C32/0089C22C1/083
Inventor 沈四海沈军
Owner HEFEI HAIYUAN MACHINERY
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