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Microarc oxidation preparation method of pure rutile phase titanium dioxide electrochromism film

A technology of electrochromic film and micro-arc oxidation, which is applied in the field of electrochromic film layer of pure rutile phase titanium dioxide prepared by micro-arc oxidation, to achieve the effect of high thickness, short processing time and good repeatability

Inactive Publication Date: 2012-07-18
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method of preparing electrochromic thin film by micro-arc oxidation method has not been reported yet

Method used

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  • Microarc oxidation preparation method of pure rutile phase titanium dioxide electrochromism film
  • Microarc oxidation preparation method of pure rutile phase titanium dioxide electrochromism film
  • Microarc oxidation preparation method of pure rutile phase titanium dioxide electrochromism film

Examples

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Effect test

Embodiment 1

[0032] The titanium or its alloy samples are polished and cleaned, placed in acetone for ultrasonic cleaning to degrease, washed with deionized water, and then dried for use. Take 1 L of deionized water and divide it into 3 parts, and dissolve the mixture of 0.12 mol sodium aluminate, 0.015 mol aluminum sulfate, 0.04 mol sodium phosphate and 0.03 mol sodium silicate in these 3 parts of aqueous solution respectively. Mix and stir the 3 solutions in the order of sodium aluminate, aluminum sulfate, sodium phosphate and sodium silicate to make a colloid treatment solution. The prepared solution is placed in the treatment liquid tank, and the titanium or its alloy sample is connected to the anode of the micro-arc oxidation power supply and immersed in the treatment liquid. Micro-arc oxidation for 15 minutes (electrical parameters are as follows: anode pulse voltage: 450V; pulse frequency: 1000Hz; pulse duty ratio: 20%). After the treatment, the sample was washed and dried to comple...

Embodiment 2

[0034] The titanium or its alloy samples are polished and cleaned, placed in acetone for ultrasonic cleaning to degrease, washed with deionized water, and then dried for use. Take 1 L of deionized water and divide it into 2 parts, and dissolve 0.24 mol of sodium aluminate and 0.03 mol of aluminum sulfate in these 2 parts of aqueous solution respectively. Mix the 2 parts of the solution and stir well to make a colloidal treatment solution. The prepared solution is placed in the treatment liquid tank, and the titanium or its alloy sample is connected to the anode of the micro-arc oxidation power supply and immersed in the treatment liquid. Micro-arc oxidation for 10 minutes (electric parameters are as follows: anode pulse voltage: 350V; pulse frequency: 1000Hz; pulse duty ratio: 20%). After the treatment, the sample was washed and dried to complete the preparation.

Embodiment 3

[0036] The titanium or its alloy samples are polished and cleaned, placed in acetone for ultrasonic cleaning to degrease, washed with deionized water, and then dried for use. Take 1L of deionized water and divide it into 3 parts. Dissolve 0.06mol of sodium aluminate, 0.007mol of aluminum sulfate and 0.04mol of sodium phosphate in these 3 parts of aqueous solution respectively. According to the sequence of sodium aluminate, aluminum sulfate and sodium phosphate, the 3 parts of the solution were mixed and stirred evenly to make a colloidal treatment solution. The prepared solution is placed in the treatment liquid tank, and the titanium or its alloy sample is connected to the anode of the micro-arc oxidation power supply and immersed in the treatment liquid. Micro-arc oxidation for 30 minutes (electrical parameters are as follows: anode pulse voltage: 550V; pulse frequency: 1000Hz; pulse duty ratio: 20%). After the treatment, the sample was washed and dried to complete the prepa...

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Abstract

The invention provides a microarc oxidation preparation method of a pure rutile phase titanium dioxide electrochromism film, which belongs to the technical field of electrochromism material preparation. Titanium or titanium alloy serves as a substrate, and Al (OH) 3 colloid serves as treating fluid. Firstly, the substrate is subjected to surface grinding and ultrasonic cleaning and then dried after being washed by using deionized water. Secondly, the substrate is connected with an anode of a microarc oxidation powder supply and then soaked into the treating fluid to be subjected to microarc oxidation for 10-30 minutes at the anode pulse pressure of 300-550 V under the condition of 1000 Hz of pulse frequency. Finally, the substrate is fetched out to be washed and dried, and the electrochromism film is prepared on the substrate surface. Materials for the substrate of microarc oxidation preparation method are easily obtained. The microarc oxidation process is simple, and the treatment time is short. The prepared film is the pure rutile phase titanium dioxide film, achieves the electrochromism in the ion solution containing hydrogen and has good repeatability. The microarc oxidation preparation method can prepare the electrochromism film which is high in abrasion resistance, corrosion resistance and thickness, and has high application value.

Description

technical field [0001] The invention belongs to the technical field of electrochromic material preparation, and relates to a method for preparing pure rutile phase titanium dioxide electrochromic film layer by micro-arc oxidation using titanium or titanium alloy as raw material. technical background [0002] The ceramic film produced by micro-arc oxidation technology has excellent wear resistance, corrosion resistance, good thermal stability of the film layer, firm combination with the substrate, and strong insulation. Therefore, it is widely used in machinery, medical treatment, aerospace and other fields. Using the micro-arc oxidation process on the surface of titanium and its alloys, a dense titanium dioxide film will be formed. This film not only has the above advantages, but also has other chemical properties (such as catalysis), making the application range of micro-arc oxidation Not limited to metal surface protection, but also extended to the field of functional thi...

Claims

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Application Information

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IPC IPC(8): C25D11/26
Inventor 姚斌李乐
Owner JILIN UNIV
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