Process for preparing porous anode aluminium oxide mould of height ordered by mixed acid electrolyzing liquid

A technology of electrolyte preparation and alumina template, which is applied in the direction of electrolytic coating, surface reaction electrolytic coating, coating, etc., can solve the problems of thin PAA film layer and small nanopore diameter of porous alumina film, and reduce the barrier layer Thickness, effect of improving orderliness
CN100432301CInactive Publication Date: 2008-11-12HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2008-11-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method used mixed acid electrolyte to manufacture high ordered multi-hole anodic alumina die plate. In order to further reduce oxidation voltage, barrier layer thickness, and increase nanometer hole array orderliness, the alumina die plate is manufactured as follows: using the mixed acid of sulfuric acid and oxalic acid as electrolyte; their content are 100-200g / L and 50-150g / L; de-oiling; oxide layer removing; electro polishing; double steps anodic oxidation manufacturing multi-hole anodic alumina die plate. The invention reduces reduce oxidation voltage and barrier layer thickness to make nanometer hole diameter rise from 20nm to 45-55nm. This is good for the further application of multi-hole alumina die plate.
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Description

technical field

[0001] The invention relates to a method for preparing a porous anodized aluminum template. Background technique

[0002] High-purity aluminum is anodized in a suitable acidic electrolyte to obtain a porous anodized aluminum film, which is a typical self-organized nanomaterial. Porous anodized aluminum film has a unique structure, close to the surface of metal aluminum is a thin and dense barrier layer, on which a thicker and loose porous layer is formed. The membranous cells of the porous layer are arranged in hexagonal close packing, and each membranous cell has a nanoscale micropore in the center. By selecting the anodizing parameters, a porous aluminum oxide film with highly ordered nanopore arrays can be obtained. Due to the unique structure and good chemical stability of porous alumina film, it is an ideal template material. If various metals, alloys, semiconductors, conductive polymers, etc. are deposited into nanopores, various nanostructure materi...

Claims

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