High-heat-resistant and corrosion-resistant aluminum matrix composite for automobile exhaust valve

Abstract

The invention discloses a high-heat-resistant and corrosion-resistant aluminum matrix composite for an automobile exhaust valve. The high-heat-resistant and corrosion-resistant aluminum matrix composite is prepared from the following raw materials in parts by weight: 95-98 parts of aluminum, 0.1-0.2 part of stannum, 0.04-0.06 part of selenium, 0.06-0.08 part of germanium, 0.1-0.2 part of nickel, 1-1.3 parts of copper, 1.8-2.4 parts of zinc, 0.11-0.13 part of titanium, 0.06-0.1 part of cetyltrimethylammonium bromide, 0.2-0.25 part of bismuth, 3-5 parts of graphene oxide, 5-8 parts of zirconium hydride, 0.9-1.2 parts of hexachloroethane, 0.25-0.3 part of xanthan gum, 1.2-1.6 parts of black manganese ores, 2-3 parts of barium carbonate, 0.6-0.8 part of sodium sulfide, less than or equal to 0.01 part of impurities and a proper amount of deionized water. An aluminum alloy material disclosed by the invention has the advantages of good heat resistance, corrosion resistance and wear resistance, has the advantages of durability and long service life when being used for the automobile exhaust valve and is capable of reducing the cost so as to be worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of automobile parts, in particular to an aluminum-based composite material for an automobile exhaust valve with high heat resistance and corrosion resistance. 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...

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