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A method for preparing a structured color film layer on the surface of zirconium-based metallic glass

A zirconium-based metallic glass, structural color technology, applied in the direction of surface reaction electrolytic coating, coating, electrolytic coating, etc., can solve the problems of relaxation crystallization of metallic glass, unfavorable long-term use, large residual stress of coloring layer, etc. Achieve the effect of smooth surface, fast color development and improved thermodynamic stability

Active Publication Date: 2020-10-09
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the problem that the existing zirconium-based metallic glass coloring method easily leads to local relaxation crystallization of the metallic glass, and the residual stress of the colored layer is relatively large, which is not conducive to long-term use. The present invention provides a color film layer prepared on the surface of zirconium-based metallic glass The method, which is colored by constant current anodic oxidation, can produce pink, blue and green oxide films with dense structure, smooth surface and uniform color.

Method used

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  • A method for preparing a structured color film layer on the surface of zirconium-based metallic glass
  • A method for preparing a structured color film layer on the surface of zirconium-based metallic glass
  • A method for preparing a structured color film layer on the surface of zirconium-based metallic glass

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Embodiment 1

[0037] Such as figure 1 As shown, the pre-treated zirconium-based metallic glass (such as figure 2 Shown) as the anode, the cathode is a graphite plate, and the area of ​​the cathode is 1.5 times the area of ​​the anode, the anode and cathode are placed in the electrolyte, wherein the electrolyte is prepared by dissolving concentrated sulfuric acid in water, and the concentration of the sulfuric acid solution is 80g / L, at a temperature of 25°C and a current density of 30mA / cm 2 , anodized for 9 minutes, then take out the zirconium-based amorphous alloy, wash it with ethanol, and dry it naturally to synthesize a pink oxide film on the surface of the zirconium-based metallic glass (such as image 3 shown), and the prepared pink oxide film has a compact structure, smooth surface, and uniform color. In addition, by such as Figure 4 The Tafel polarization curve obtained from the corrosion resistance test of the zirconium-based metallic glass before and after the preparation of...

Embodiment 2

[0039] Such as figure 1As shown, the zirconium-based metallic glass sheet after pretreatment is used as the anode, and the cathode is a platinum sheet, and the area of ​​the cathode is equal to that of the anode. The cathode and anode are placed in the electrolyte, which is prepared by dissolving concentrated sulfuric acid in water. The concentration of sulfuric acid solution is 90g / L, at a temperature of 20°C and a current density of 40mA / cm 2 , Anodize for 7 minutes, take out the zirconium-based amorphous alloy and wash it with ethanol, and after natural drying, a pink oxide film can be synthesized on the surface of the zirconium-based metallic glass, and the prepared pink oxide film has a dense structure, smooth surface, and uniform color. The corrosion resistance of zirconium-based metallic glass in 3% NaCl solution is improved after anodic oxidation film formation.

Embodiment 3

[0041] Such as figure 1 As shown, the pre-treated zirconium-based metal glass sheet is used as the anode, the cathode is a graphite plate, and the area of ​​the cathode is 1.5 times that of the anode. The cathode and anode are placed in the electrolyte, and the electrolyte is prepared by dissolving concentrated sulfuric acid in water. , where the concentration of concentrated sulfuric acid solution is 90g / L, at a temperature of 18°C ​​and a current density of 40mA / cm 2 , Anodize for 8 minutes, take out the zirconium-based amorphous alloy and wash it with ethanol, and after natural drying, a pink oxide film can be synthesized on the surface of the zirconium-based metallic glass, and the prepared pink oxide film has a dense structure, smooth surface, and uniform color. The corrosion resistance of zirconium-based metallic glass in 3% NaCl solution is improved after anodic oxidation film formation.

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Abstract

The invention discloses a method for preparing a structural color film layer on the surface of zirconium-based metal glass, and belongs to the technical field of metal surface engineering. The methodcomprises the steps that a dual-electrode system is adopted, the zirconium-based metal glass serves as the anode, a graphite plate or a platinum sheet serves as a cathode, a sulfuric acid solution with a certain concentration serves as electrolyte, and constant current anodic oxidation coloring treatment is conducted. According to the method, through the constant current anodic oxidation method, coloring treatment is conducted, red, blue and green oxidation films can be prepared, in addition, the structure is compact, the surface is flat and the color is uniform.

Description

technical field [0001] The invention belongs to the technical field of metal surface engineering, and in particular relates to a method for preparing a structural color film layer on the surface of zirconium-based metallic glass Background technique [0002] Metallic glass, also known as amorphous alloy, is an important non-equilibrium material. Its atoms are topologically disordered in three-dimensional space, with a unique structure of long-range disorder and short-range order, thus exhibiting excellent physical and chemical properties. and mechanical properties. In metallic glasses, zirconium-based metallic glasses with Zr as the main element have strong glass-forming ability (GFA) and a wide supercooled liquid phase region, and can be easily prepared with less complicated equipment and have excellent performance and smaller size. Large, easily formable bulk metallic glass. Therefore, zirconium-based metallic glasses have been the focus and hotspot of metallic glass res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26
CPCC25D11/26
Inventor 何世伟孙利田荣荣方铖申曦朱勤旺
Owner ANHUI UNIVERSITY OF TECHNOLOGY