Aluminum product and manufacturing method thereof
A production method and technology for aluminum products, which are applied in chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of low catalytic activity, weak surface adhesion between titanium dioxide and aluminum products, and small specific surface area. Achieve the effect of increasing specific surface area, increasing practicability and added value, and strong adhesion
Inactive Publication Date: 2009-12-02
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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- Abstract
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- Claims
- Application Information
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Problems solved by technology
In the prior art, titanium dioxide is usually made into a film and directly loaded on the surface of aluminum products, but it is easy to cause weak adhesion between titanium dioxide and the surface of aluminum products, and because the specific surface area of the titanium dioxide film is small, its catalytic activity is low
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[0012] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0013] see figure 1 , an aluminum product 100 provided by an embodiment of the present invention, which includes an aluminum substrate 10; a layer of aluminum oxide film 20 with pores 21 formed on the surface of the aluminum substrate 10; and a layer of titanium dioxide formed on the aluminum oxide film 20 Film 30. The material of the aluminum substrate 10 is pure aluminum or aluminum alloy. In this embodiment, the material of the aluminum substrate 10 is aluminum alloy. The thickness of the aluminum oxide film 20 ranges from a few micrometers to several hundred micrometers, and the thickness of the titanium dioxide film ranges from 100 nm to 200 nm.
[0014] see figure 2 , the aluminum oxide membrane 20 is stacked by a plurality of closely arranged hexagonal prism membranous units 23, and there is a circular hole 21 in the middle of e...
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Abstract
The invention provides an aluminum product, which comprises an aluminum substrate, a layer of alumina film which is formed on the surface of the aluminum substrate and has a porous structure, and a layer of titanium dioxide film which is formed on the alumina film. The invention also provides a manufacturing method of the aluminum product, which comprises the following steps: forming the layer of alumina film having the porous structure on the surface of the aluminum substrate by anodic oxidation treatment; and sputtering the layer of titanium dioxide film on the alumina film. Compared with the prior art, the aluminum product has improved practicability and added value, as the layer of alumina film having the porous structure is formed on the aluminum substrate first, and then under the condition of controlling the sputtering time, the titanium dioxide film is coated on the porous structure to form a porous titanium dioxide film which has a high adhesive force, a large specific surface area and improved activity of a photocatalyst.
Description
technical field [0001] The invention relates to the field of metal material processing, in particular to an aluminum product and a manufacturing method thereof. Background technique [0002] At present, aluminum products are widely used in castings with complex shapes, various instruments, instrument casings, internal combustion engine pistons and cylinder blocks due to their excellent properties such as good ductility, heat resistance, corrosion resistance, and easy casting. In order to increase the practicability and added value of aluminum products, the surface of aluminum products is usually coated with a layer of photocatalyst titanium dioxide with functions such as antibacterial, deodorizing, self-cleaning, and anti-mildew. The working principle of photocatalyst titanium dioxide is: when titanium dioxide is irradiated with light of appropriate wavelength, the light is absorbed by titanium dioxide in the form of energy, and then stimulates the body of titanium dioxide t...
Claims
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IPC IPC(8): C22C21/00B32B15/04C23F17/00C25D11/04C23C14/34C23C14/08
CPCC23C14/08C25D11/18C23C28/04C25D11/045C23C28/042C25D11/04
Inventor 黄建豪
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD