Aluminium and aluminium alloy surface antiseptic treatment method and product prepared by same

Abstract

The invention provides an aluminium and aluminium alloy surface antiseptic treatment method which comprises the following steps of: providing an aluminium matrix; carrying out chemical degreasing on the aluminium matrix; carrying out zincate treatment on the aluminium matrix to form a zinc layer on the aluminium matrix; and forming a ceramic coating consisting of a refractory compound on the zinc layer by a vacuum plating method. The invention provides an aluminium product prepared by the antiseptic treatment method.

Description

technical field [0001] The invention relates to a method for anticorrosion treatment of aluminum and aluminum alloy surfaces and products thereof. Background technique [0002] Aluminum alloy has the advantages of light weight and good heat dissipation performance, and is widely used in communication, electronics, transportation, construction, aerospace and other fields. In the air, an aluminum oxide protective film will be formed on the surface of aluminum alloy. In the general atmospheric environment, the aluminum oxide film on the surface of aluminum alloy can effectively protect the aluminum alloy substrate, but in the moisture containing electrolyte, such as the ocean surface atmosphere The surface of aluminum alloy is prone to pitting corrosion, which seriously damages the appearance of aluminum alloy products and shortens the service life of aluminum products. [0003] In order to improve the corrosion resistance of aluminum alloys, it is usually necessary to carry o...

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Problems solved by technology

Aluminum oxide protective film will be formed on the surface of aluminum alloy in the air. In the general atmospheric environment, the aluminum oxide film on the surface of aluminum alloy can effectively protect the aluminum alloy substrate, but in the moisture containing electrolyte, such as the ocean surface atmosphere environment, the surface of aluminum alloy is prone to pitting corrosion, which seriously damages the appearance of aluminum alloy products and shortens the service life of aluminum products

[0003] In order to improve the corrosion resistance of aluminum alloy, it is usually necessary to carry out surface film-forming treatment on the surface of aluminum alloy. The common treatment methods include anodic oxidation treatment, baking paint, etc., but these processes have great environmental pollution problems.

Although the vacuum coating (PVD) technology is a very environmentally friendly coating process, and can be coated with a variety of coatings and excellent wear resistance, but the surface of the aluminum alloy usually has many depressions or pores, and the PVD process deposited The film layer usually has a profiling structure on the surface of the substrate, and the film layer deposited in these depressions or voids is often thinner in other areas, so during use, the depressions or void areas are often more prone to pitting, making the film layer cannot effectively prevent the aluminum alloy substrate from being corroded

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