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Method for preparing aluminium alloy-loaded titanium dioxide nano tube film

A technology of aluminum alloy surface and titanium dioxide, which is applied in chemical instruments and methods, catalyst activation/preparation, chemical/physical processes, etc., can solve problems such as poor bonding force and unsuitability for large-scale application of aluminum alloys, and achieve good wear resistance, Excellent photocatalytic bactericidal performance, excellent photocatalytic antibacterial effect

Inactive Publication Date: 2011-07-20
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method of directly coating nano-titanium dioxide on the magnesium alloy substrate through the plating solution is simple and easy to operate, but its contact with the substrate is a physical combination, and the bonding force is poor, which is not suitable for a large number of applications of aluminum alloys.
Patent CN101623658A provides a method for preparing titanium dioxide and silicon dioxide composite nanotube array films on aluminum substrates by in-situ growth of anodized aluminum oxide templates (AAO). This method is prepared on pure aluminum substrates. The combination is good, which belongs to chemical combination, but there is a big difference between aluminum alloy and pure aluminum, which limits its application

Method used

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  • Method for preparing aluminium alloy-loaded titanium dioxide nano tube film
  • Method for preparing aluminium alloy-loaded titanium dioxide nano tube film
  • Method for preparing aluminium alloy-loaded titanium dioxide nano tube film

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A solution of perchloric acid and ethanol with a volume ratio of 1:2 was used to electrochemically polish 1100 aluminum alloy samples at a voltage of 5V for 0.5min. The aluminum alloy is anodized with a concentration of 0.1M H 3 PO 4 It is an electrolyte solution, the oxidation voltage is 20V, the temperature is 30°C, and the oxidation time is 4h. The aluminum substrate on which the anodized aluminum nanotube array template (AAO) has been grown after anodic oxidation is taken out and cleaned with deionized water for use. Prepare 0.5M (NH 4 ) 2 TiF 6 The liquid phase deposition solution was fully stirred and placed in a water bath at 30°C for later use. Dip the AAO template into (NH 4 ) 2 TiF 6 After being deposited in the solution for 15 minutes, it was taken out, washed with deionized water and dried. Then heat up at 400°C for 3 hours and cool to room temperature with the furnace. Table 2 shows the values ​​of titanium dioxide nanotube films on aluminum alloy...

Embodiment 2

[0021] The 1235 aluminum alloy sample was electrochemically polished with a solution of perchloric acid and ethanol at a volume ratio of 1:2 at a voltage of 10V for 1 min. Anodizing the aluminum alloy, using H at a concentration of 0.2M 3 PO 4 It is an electrolytic solution, the oxidation voltage is 40V, the temperature is 20°C, and the oxidation time is 6h. The aluminum substrate on which the anodized aluminum nanotube array template (AAO) has been grown after anodic oxidation is taken out and cleaned with deionized water for use. Prepare 0.1M (NH 4 ) 2 TiF 6 The liquid phase deposition solution was fully stirred and placed in a water bath at 35°C for later use. Dip the AAO template into (NH 4 ) 2 TiF 6 After being stirred and deposited in the solution for 20 minutes, it was taken out, washed with deionized water and dried. Then heat up at 500°C for 2 hours and cool to room temperature with the furnace. Table 2 shows the values ​​of titanium dioxide nanotube films o...

Embodiment 3

[0023] The 3003 aluminum alloy sample was electrochemically polished with a solution of perchloric acid and ethanol at a volume ratio of 1:3 at a voltage of 10V for 1 min. Anodizing the aluminum alloy with a concentration of 1M H 3 PO 4 It is an electrolytic solution, the oxidation voltage is 60V, the temperature is 20°C, and the oxidation time is 10h. The aluminum substrate on which the anodized aluminum nanotube array template (AAO) has been grown after anodic oxidation is taken out and cleaned with deionized water for use. Prepare 0.05M (NH 4 ) 2 TiF 6 The liquid phase deposition solution was fully stirred and placed in a water bath at 40°C for later use. Dip the AAO template into (NH 4 ) 2 TiF 6 After being stirred and deposited in the solution for 30 minutes, it was taken out, washed with deionized water and dried. Then heat up at 500°C for 3 hours and cool to room temperature with the furnace. The energy spectrum (EDS) elemental analysis of the titanium dioxide...

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Abstract

The invention discloses a method for preparing an aluminium alloy-loaded titanium dioxide nano tube film, belonging to the field of nano films. The method comprises the following steps of: (1) carrying out electrochemical polishing on an aluminium alloy with perchloric acid and an ethanol solution; (2) carrying out anode oxidation treatment on the aluminium alloy, wherein an electrolyte solution is mixed solution of H3PO4 or H3PO4 and H2SO4; (3) taking an aluminium oxide nano tube array prepared by anode oxidation as a template, cleaning with deionized water and drying; (4) preparing liquid phase deposition solution (NH4)2TiF6; (5) placing the anode aluminium oxide nano tube array template in the liquid phase deposition solution to be subjected to standing and deposition, cleaning with the deionized water after the template is taken out, and drying; and (6) carrying out heat treatment on the deposited film at the temperature of 400-600 DEG C and insulating for 2-4 hours, and cooling to room temperature along with a furnace, thus the film is prepared. The TiO2 nano tube film prepared by the invention has high abrasive resistance and excellent photocatalysis bacteriostatic, super hydrophilic and self-cleaning performances.

Description

technical field [0001] The invention relates to an aluminum alloy loaded TiO 2 The preparation method of the nanotube thin film, more specifically, utilizes the anodized aluminum oxide (AAO) template of the aluminum alloy substrate to deposit the titanium dioxide nanotube thin film in liquid phase, and belongs to the field of the nanometer thin film. Background technique [0002] Aluminum and aluminum alloys have the characteristics of small specific gravity, good electrical conductivity, strong corrosion resistance, good heat dissipation performance, high specific strength and easy processing, which make them widely used in various industries. The world's aluminum consumption is as high as 23,000kt / a, becoming the second largest metal material after steel. Due to the continuous advancement of science and technology, the excellent properties of aluminum are constantly being recognized and utilized, and its use is expanding day by day. In addition to the great success in the...

Claims

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Application Information

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IPC IPC(8): C23F17/00B01J21/06B01J37/00
Inventor 王金淑李洪义王珍珍蔡倩陈欣
Owner BEIJING UNIV OF TECH
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