Metal oxide film and manufacturing method thereof

A technology of oxide film and manufacturing method, applied in the direction of coating, electrolytic coating, etc., can solve problems such as difficult to apply durability

Active Publication Date: 2021-03-02
TOYOTA CENT RES & DEV LAB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of forming a fine concave-convex structure by molding or processing can be applied to resins and soft inorganic materials, but it is difficult to apply to hard inorganic materials with high durability such as the metal oxide film described in Patent Document 3.

Method used

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  • Metal oxide film and manufacturing method thereof
  • Metal oxide film and manufacturing method thereof
  • Metal oxide film and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] (Manufacturing method of metal oxide film)

[0066] (electrodeposition process)

[0067] A base material made of SUS440C (JIS G 4304), which is a stainless steel material, was prepared. prepared containing FeSO 4 (Concentration: 100g / L), ZnSO 4 (concentration: 5.5g / L), citric acid (concentration: 1g / L), and an aqueous solution of L-ascorbic acid (concentration: 3g / L) were used as an electrodeposition solution. The iron electrode is used as the anode, and the substrate is used as the cathode, and immersed in the electrodeposition solution, at a current density of 5A / dm 2 1. Electrodeposition was performed for 10 minutes under the condition that the temperature of the electrodeposition solution was 50° C. As a result, a metal film with a thickness of about 10 μm can be deposited on the substrate.

[0068] (heat treatment process)

[0069] The substrate after the electrodeposition process was placed in an electric furnace heated to 580° C., and heat-treated in the ai...

Embodiment 2

[0079] In the metal oxide film of Example 2, as shown in Table 1, in the electrodeposition process, a nickel electrode was used as an anode, and a 4 (Concentration: 4g / L), Ni(NH 2 SO 3 ) 2 (concentration: 300g / L), citric acid (concentration: 0.5g / L), L-ascorbic acid (concentration: 5g / L) aqueous solution as electrodeposition solution. In addition, in the heat treatment step, heat treatment was performed for 0.5 hours. The other manufacturing conditions are the same as in Example 1, and therefore descriptions thereof are omitted. The metal oxide film of Example 2 was also subjected to surface observation, structural analysis, and cross-sectional analysis in the same manner as in Example 1, and the results are shown in Table 1.

Embodiment 3

[0081] In the metal oxide film of Example 3, as shown in Table 1, the material of the substrate was made of stainless steel SUS304 (JIS G 4304). In addition, in the electrodeposition process, the use of FeSO 4 (Concentration: 160g / L), ZnSO 4 (Concentration: 5g / L) aqueous solution was used as the electrodeposition solution. In addition, in the heat treatment step, the base material after the electrodeposition step was put into an electric furnace heated to 500° C., and heat treatment was performed in an air atmosphere for 1 hour. The other manufacturing conditions are the same as in Example 1, and therefore descriptions thereof are omitted. The metal oxide film in Example 3 was also subjected to surface observation, structural analysis, and cross-sectional analysis in the same manner as in Example 1, and the results are shown in Table 1.

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Abstract

A metal oxide film comprising a metal oxide represented by the following formula (1) or a metal oxide containing ZnO, and having a plurality of needle-shaped or plate-shaped crystals arranged in a mesh shape or a sword mountain shape. obtained porous structure. m x L 3‑x o 4 (1) (In the above formula, M≠L, M is selected from the group consisting of Mg, Fe, Zn, Mn, Cu, Co, Cr, Ni, L is selected from the group consisting of Co, Al, Fe, Cr , x satisfies 0≤x≤1).

Description

technical field [0001] The present invention relates to metal oxide films and methods for their manufacture. Background technique [0002] Conventionally, a film has been formed on the surface of a substrate for the purpose of imparting desired surface characteristics to the substrate. Metal oxide films have advantages such as high heat resistance and good adhesion to metal substrates, and the use of metal oxide films in place of conventional films may sometimes solve technical problems associated with conventional films. [0003] For example, as a conventional water-repellent material, a water-repellent material obtained by forming an organic compound on the surface of a metal substrate having a plurality of micropores described in Patent Document 1, and a glass-based material described in Patent Document 2 can be exemplified. A water-repellent material obtained by forming a silicon dioxide film with unevenness on the surface of the material. Since the organic compound fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D9/10
CPCC25D9/10
Inventor 董树新太田理一郎村濑雅和伊关崇大砂哲
Owner TOYOTA CENT RES & DEV LAB INC
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