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Method for regulating colorful Ta2O5 nanometer film

A nano-film, ta2o5 technology, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve problems such as inaccuracy, difficulty in measuring the thickness of tantalum pentoxide nano-films, and imperfect theoretical explanations of different colors.

Active Publication Date: 2012-07-25
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the thickness measurement of tantalum pentoxide nano-films prepared by anodic oxidation is difficult and imprecise, and the theoretical explanation for the generation of different colors is not perfect

Method used

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  • Method for regulating colorful Ta2O5 nanometer film
  • Method for regulating colorful Ta2O5 nanometer film
  • Method for regulating colorful Ta2O5 nanometer film

Examples

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Embodiment 1

[0016] Embodiment 1: as figure 1 As shown, a tantalum sheet with a purity of 99.99% and a thickness of 0.25 mm is used as the anode, and the cathode is graphite, which are respectively fixed in the anodic oxidation bath device and immersed in 1 M dilute sulfuric acid electrolyte, and oxidized by applying different DC voltages for 10 minutes , rinse with deionized water after taking it out, and dry it. figure 2 It is a low-magnification SEM photo of a smooth, uniform, corrosion-resistant dense oxide layer obtained by anodizing the surface of metal tantalum. XRD results have shown that the product is amorphous. In order to further determine the valence state of the oxide layer, we conducted a Characterization analysis by X-ray photoelectron spectroscopy (XPS). like image 3 as shown, image 3 a is the full spectrum of the photoelectron energy spectrum, which clearly shows the binding energies of Ta, O, and C elements; the binding energies of 26.05eV and 27.9eV belong to Ta2p...

Embodiment 2

[0017] Example 2: Color-Rich Ta 2 o 5 The nano-film regulation method includes: using a tantalum sheet with a purity of 99.99% and a thickness of 0.25 mm as the anode, and graphite as the cathode, which are respectively fixed in an anodic oxidation bath device and immersed in a 1 M dilute sulfuric acid electrolyte. Oxidize with different DC voltages for 10 minutes, rinse with deionized water after taking out, and dry.

[0018] The tantalum sheet is a tantalum sheet after degreasing and chemical polishing, and different DC voltages modulate Ta 2 o 5 Nano film thickness and color.

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Abstract

The invention relates to a method for regulating a colorful Ta2O5 nanometer film. The method mainly comprises the steps of taking a tantalum sheet as an anode and graphite as a cathode, soaking in diluted sulfuric acid electrolyte, and oxidizing through different direct current voltages, thus obtaining the Ta2O5 nanometer film. The method provided by the invention proves that the color change of the Ta2O5 is mainly regulated by the thickness of the film and that the thickness of the film is in linear increasing trend along with the oxidized voltage in preparation process.

Description

technical field [0001] The present invention relates to a Ta 2 o 5 The invention relates to a method for adjusting and controlling a nanometer thin film, which belongs to the field of compound preparation. Background technique [0002] Because of Ta 2 o 5 The thin film has the characteristics of good chemical stability, thermal stability, high dielectric constant, etc., and has broad application prospects in the fields of sewage treatment, reflective coating, hydrogen production by photolysis of water, and electrical storage. However, it is difficult and imprecise to measure the thickness of tantalum pentoxide nano-films prepared by anodic oxidation, and the theoretical explanation for the generation of different colors is not perfect. Contents of the invention [0003] The object of the invention provides a Ta 2 o 5 The biggest feature of the nano-film regulation method is that the film can control the color by changing the preparation process. [0004] In order to...

Claims

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Application Information

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IPC IPC(8): C25D11/26
Inventor 梁长浩盛翠翠张和民蔡云雨
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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