Process for preparing alumina ceramic foil materials with penetrative nanohole

An aluminum oxide and nanoporous technology, which is applied to ceramic products, household appliances, other household appliances, etc., can solve the problems of inability to use aluminum oxide ceramic membrane materials, and inability to prepare and obtain aluminum oxide ceramic foil materials. , to achieve the effect of good market prospects, huge economic benefits and high preparation efficiency

Inactive Publication Date: 2009-08-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum oxide ceramic film material prepared by the above-mentioned material surface treatment technology is always attached to the surface of the substrate (or part), in fact it is a surface film, which is always combined with the substrate, and the thickness of the substrate material Much larger than the thickness of the film material, in this case the Al2O3 ceramic film material cannot be used alone
However, in many cases, the performance of pure thin films is different from those attached to the surface of the substrate, and has been widely used in industrial production. Aluminum ceramic foil material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Use pure aluminum foil with a thickness of 30 μm to wrap it evenly on the PVC cylindrical part, pull the aluminum foil lightly to make the aluminum foil fit the outer surface of the cylindrical part, and make the outer layer of aluminum foil contact the inner layer of aluminum foil. Then seal the edge of the aluminum foil with an adhesive tape, so that the solution is not allowed to enter the inner surface of the aluminum foil attached to the PVC cylindrical part during the electrochemical anodizing process. The aluminum foil wrapped on the PVC cylinder is used as an anode and placed in the electrochemical anodizing solution, so that the electrochemical anodizing solution only contacts one side of the aluminum foil, so the electrochemical anodizing reaction proceeds from one surface of the aluminum foil. In the sulfuric acid electrolytic solution with the concentration of the electrochemical anodic oxidation solution being 1mol / L, the temperature of the sulfuric acid ele...

Embodiment 2

[0019] This example is the same as Example 1 except for the following process: a pure aluminum foil with a thickness of 10 μm is evenly pasted on the aluminum plate with a conductive adhesive, and then the edge of the aluminum foil is sealed with an adhesive tape so that it is not used during the electrochemical anodizing process. The solution enters between the aluminum foil and the bonding surface of the aluminum plate. After the electrochemical anodic oxidation process is completed, the aluminum oxide ceramic foil is separated from the surface of the aluminum plate, and after the glue is removed, a pure aluminum oxide ceramic foil material with uniformly penetrating micropores is obtained.

Embodiment 3

[0021] This example is the same as Example 1 except for the following process: a pure aluminum foil with a thickness of 10 μm is evenly pasted on the aluminum plate, and then the edge of the aluminum foil is sealed with tape, and the aluminum foil is pasted into a ring with tape, and the In the process of chemical anodization, the aluminum foil in the middle area of ​​the ring is oxidized into aluminum oxide ceramic foil material, and the ring-shaped part pasted by tape does not participate in the chemical reaction, and is still aluminum foil, so that the middle area is aluminum oxide and the surrounding area is aluminum oxide. Foil material for aluminum. The surrounding aluminum has good toughness and can be used as a clamping part when the foil material is installed, and the brittle aluminum oxide will not be easily damaged during use.

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Abstract

The invention provides a preparation method of aluminum oxide ceramic foil material with penetrating nano-holes, which includes firstly attaching aluminum foil to the surface of a conductive material, making the surfaces of the materials contact, and maintaining conduction between the materials; The conductive material attached to the aluminum foil is placed as an anode in an electrochemical anodizing solution to make the aluminum foil undergo an oxidation reaction, so as to convert the aluminum foil into aluminum oxide, and form penetrating micropores in the thickness direction. After the ceramic foil is separated from the surface of the conductive material, a pure Al2O3 ceramic foil material with uniformly penetrating micropores is obtained. The aluminum oxide ceramic foil material can be directly applied to fine filtration of gas and liquid. The invention can effectively, quickly, conveniently and completely prepare Al2O3 ceramic foil material with nano-scale pore size independently, and has the advantages of simple process, convenient operation, low economic cost and high production efficiency, and is suitable for industrial mass production application and market The prospects are very broad.

Description

technical field [0001] The invention relates to the field of aluminum oxide ceramic foil materials, in particular to a preparation method for converting aluminum foil into aluminum oxide ceramic foil materials with penetrating nanometer pores through electrochemical anodic oxidation. Background technique [0002] When the aluminum plate and aluminum block are electrochemically anodized, a layer of aluminum oxide film will be formed on the surface. This layer of aluminum oxide film is porous, with a diameter of less than 100nm and a thickness of 30μm. The axis of the hole is perpendicular to the material. surface, and the distribution is very uniform ("Silent Destruction-Metal Corrosion", edited by Cao Chunan, Tsinghua University Press, Nanan University Press, first edition in June 2000, P77-80). The Chinese invention patent with the application number of 01107430.2 discloses a method of rapid anodic hard oxidation of aluminum pots, which is characterized in that the aluminum...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/64C04B38/00
Inventor 周照耀夏伟邵明王郡文
Owner SOUTH CHINA UNIV OF TECH
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