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Aluminum product and preparation method thereof

A technology for aluminum products and aluminum substrates, applied in the field of aluminum products and their preparation, which can solve the problems of falling off, inability to effectively prevent electrochemical corrosion of aluminum or aluminum alloy substrates, and discoloration

Active Publication Date: 2012-09-26
GUANGDONG GUANGYUN NEW MATERIAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the standard electrode potential of aluminum or aluminum alloy is very low, and the PVD decorative coating itself will inevitably have tiny pores, therefore, direct plating on the surface of aluminum or aluminum alloy substrates such as TiN layer, TiNO layer, TiCN layer, CrN layer, CrNO layer, CrCN layer or other PVD decorative coatings with corrosion resistance can not effectively prevent the electrochemical corrosion of the aluminum or aluminum alloy substrate, and the PVD decorative coating itself will also occur Discoloration, shedding, etc.

Method used

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  • Aluminum product and preparation method thereof
  • Aluminum product and preparation method thereof
  • Aluminum product and preparation method thereof

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Embodiment Construction

[0022] see figure 1 and figure 2 ( figure 2 The mark is wrong, please modify), the aluminum product 100 of the preferred embodiment of the present invention includes an aluminum substrate 10 and an anodized film 20 and a color layer 30 formed on the aluminum substrate 10 in sequence. The aluminum product 100 can be a casing of a 3C electronic product, and can also be a frame of glasses, a construction piece, and a part of a vehicle such as an automobile.

[0023] The aluminum base 10 is made of aluminum or aluminum alloy. The aluminum substrate 10 is electrochemically etched to form a porous surface 12 , and a plurality of nanopores 122 are evenly distributed on the porous surface 12 . The diameter of the nanopore 122 is 8-20 nm, preferably 10-15 nm. The depth of the nanohole 122 is much smaller than the thickness of the color layer 30 .

[0024] The anodized film 20 is formed on the porous surface 12 of the aluminum substrate 10 . The anodized film 20 is obtained by a...

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Abstract

The invention discloses an aluminum product. The aluminum product comprises an aluminum matrix, an anode oxide film and a color layer, wherein the anode oxide film and the color layer are orderly arranged on the aluminum matrix. The aluminum matrix comprises a porous surface formed by electrochemical etching. Multiple nano-pores are distributed on the porous surface. Sizes of the nano-pores are in a range of 8 to 20nm. The anode oxide film and the color layer are orderly arranged on the porous surface. The color layer is formed by vacuum coating. The invention also provides a preparation method of the aluminum product.

Description

technical field [0001] The invention relates to an aluminum product and a preparation method thereof. Background technique [0002] Vacuum coating technology (PVD) is a very environmentally friendly film-forming technology. The film layer formed by vacuum coating has the advantages of high hardness, high wear resistance, good chemical stability, firm combination with the substrate and bright metal appearance. Therefore, vacuum coating can be used on metal substrates such as aluminum, aluminum alloy and stainless steel The application in the field of material surface decorative treatment is more and more extensive. [0003] However, since the standard electrode potential of aluminum or aluminum alloy is very low, and the PVD decorative coating itself will inevitably have tiny pores, therefore, direct plating on the surface of aluminum or aluminum alloy substrates such as TiN layer, TiNO layer, TiCN layer, CrN layer, CrNO layer, CrCN layer or other PVD decorative coatings wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/14C25D11/04C23C28/04
CPCC25D11/243C25D11/16C25D11/04C23C28/042C25F3/04C25D11/18C23C28/044
Inventor 张新倍陈文荣蒋焕梧陈正士张超勇
Owner GUANGDONG GUANGYUN NEW MATERIAL TECH CO LTD
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