Magnesium alloy composite piece and preparation method thereof

Abstract

The invention relates to a vehicle oil pan, which comprises a magnesium alloy substrate and at least one organic material layer for at least covering the magnesium alloy substrate partially. The invention also provides a method for preparing the magnesium alloy composite piece. The preparation method comprises the following steps: providing the magnesium alloy substrate; and forming at least one organic material layer for at least covering the magnesium alloy partially. The magnesium alloy composite piece has the advantages of avoiding producing galvanic corrosion when the magnesium alloy substrate and dissimilar metal are contacted.

Description

technical field [0001] The invention relates to a magnesium alloy composite part and a preparation method thereof, in particular to a magnesium alloy composite part applicable to the automobile field and a preparation method thereof. Background technique [0002] Magnesium alloy has the advantages of light weight, high strength, pressure resistance, good heat dissipation, vibration resistance, electromagnetic radiation absorption and strong machinability. In addition, more than 80% of magnesium alloys can be recycled and have little environmental pollution, so magnesium alloys are known as "green energy-saving materials". At present, magnesium alloys are widely used in many fields such as national defense, automobile industry, aerospace, 3C industry, and sporting goods. [0003] However, magnesium alloys have a close-packed hexagonal crystal structure, and due to less deformation-slip systems, they have poor plasticity at room temperature and are difficult to form. In addi...

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Problems solved by technology

Therefore, it is impossible to permanently prevent the contact corrosion problem by only using the isolation gasket 18 for isolation.

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