A kind of aluminum alloy composite material and preparation method thereof

Abstract

The invention discloses an aluminum alloy composite material and a preparation method thereof. The aluminum alloy composite material is prepared from the following components in parts by weight: 89-93 parts of aluminum, 4-6 parts of iron, 3-6 parts of manganese dioxide, 3-5 parts of magnesium, 1-2 parts of titanium dioxide fibers, 1-1.5 parts of tin, 0.5-1 part of tungsten carbide, 0.05-1 part of zinc oxide and 0.05-0.1 part of graphene nanosheets. The invention also provides a method for preparing the material. The method comprises the following steps: (1) weighing the following components in parts by weight: 89-93 parts of aluminum, 4-6 parts of iron, 3-6 parts of manganese dioxide, 3-5 parts of magnesium, 0.05-1 part of zinc oxide, 0.05-0.1 part of graphene nanosheets and 0-0.5 part of vanadium pentoxide, heating to the temperature of 660-690 DEG C under an inert atmosphere, and uniformly mixing; (2) adding 0.5-1 weight part of tungsten carbide subjected to ball milling into the product in the step 1 under the inert atmosphere, and heating to the temperature of 1100-1200 DEG C; and (3) sequentially adding 1-2 weight parts of titanium dioxide fibers and 1-1.5 parts of tin into the product in the step 2 under the inert atmosphere, preserving the temperature at the temperature of 800 DEG C for 0.5-2 hours, removing the slag, and degassing, thereby obtaining the aluminum alloy composite material.

Description

technical field [0001] The invention belongs to the field of aluminum alloy materials, and in particular relates to an aluminum alloy composite material and a preparation method thereof. Background technique [0002] The most metal in the earth's crust is aluminum Al, followed by iron. Aluminum accounts for 7.45% of the total weight of the entire earth's crust, almost twice as much as iron. Aluminum is a silver-white light metal (only 2.7 specific gravity). Pure aluminum is soft and can be pressed into very thin foils. Pure aluminum has good conductivity and is light. People often use it to replace copper to make wires. Especially in long-distance power transmission, aluminum wires are often used instead of copper wires, which can reduce the number of utility poles and other equipment. [0003] Because pure aluminum is too soft, people add a small amount of Cu, Mg, Mn, etc. to make a hard aluminum alloy. The aluminum alloy is beautiful, light and not easy to rust, so it ha...

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Problems solved by technology

[0005] However, due to the fast corrosion rate of pure aluminum in alkaline electrolyte, a large amount of hydrogen gas is easily generated, resulting in extremely low Faradaic efficiency of the anode; at the same time, the oxide film covered on the aluminum surface causes the overpotential of the aluminum anode to rise, making pure aluminum The actual working voltage is low in alkaline medium, which reduces the voltage efficiency of the anode