Preparation method of laminated electrolytic oxidation water electrode

An electrolytic oxidation and water electrode technology, which is applied in the plating of superimposed layers, chemical instruments and methods, and electrolytic coatings, etc. problem, to achieve the effect of excellent diffusible bacteriostatic ability, excellent electrical properties and electrolytic ability, and excellent bacteriostatic properties

Active Publication Date: 2019-08-23
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet this demand, electrode systems such as titanium-platinum electrodes and pure platinum electrodes have been used to prepare electrolytic oxidized water, but these two electrodes are expensive, and the oxidation or reduction of electrolytic oxidized water prepared by using them is not strong enough. Antibacterial performance is not good enough

Method used

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  • Preparation method of laminated electrolytic oxidation water electrode
  • Preparation method of laminated electrolytic oxidation water electrode
  • Preparation method of laminated electrolytic oxidation water electrode

Examples

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Effect test

Embodiment 1

[0040] 1) Micro-arc oxidation treatment: dissolving disodium edetate and sodium hydroxide in water to form a mixed solution, the concentration of disodium edetate in the mixed solution is 0.1mol / L, and the concentration of sodium hydroxide is 0.1mol / L. The mixed solution is used as the electrolyte, the titanium sample is used as the anode, and the stainless steel plate is used as the cathode; the electrolyte is added to the electrolytic container, and the titanium sample is placed in the electrolyte at 25°C for micro-arc oxidation. Layer micro-arc oxidation adopts pulse voltage, the positive voltage is 300V, the negative voltage is 20V, the pulse frequency of micro-arc oxidation is 600Hz, the duty cycle of micro-arc oxidation is 4%, the time of micro-arc oxidation is 1min, and titanium dioxide is formed on the surface of titanium. The micro-arc oxidation coating with a microporous structure is dried to obtain a titanium electrode with a micro-arc oxidation titanium coating on ...

Embodiment 2

[0045] 1) Micro-arc oxidation treatment: dissolving disodium edetate and sodium hydroxide in water to form a mixed solution, the concentration of disodium edetate in the mixed solution is 0.3mol / L, and the concentration of sodium hydroxide is 0.3mol / L. The mixed solution is used as the electrolyte, the titanium sample is used as the anode, and the stainless steel plate is used as the cathode; the electrolyte is added to the electrolytic container, and the titanium sample is placed in the electrolyte at 35°C for micro-arc oxidation. Layer micro-arc oxidation adopts pulse voltage, the positive voltage is 500V, the negative voltage is 30V, the pulse frequency of micro-arc oxidation is 800Hz, the duty cycle of micro-arc oxidation is 5%, the time of micro-arc oxidation is 6min, and titanium dioxide is formed on the surface of titanium. A micro-arc oxidation coating with a microporous structure is dried to obtain a titanium electrode with a micro-arc oxidation titanium coating on th...

Embodiment 3

[0049] 1) Micro-arc oxidation treatment: dissolving disodium edetate and sodium hydroxide in water to form a mixed solution, the concentration of disodium edetate in the mixed solution is 0.4mol / L, and the concentration of sodium hydroxide is 0.5mol / L. The mixed solution is used as the electrolyte, the titanium sample is used as the anode, and the stainless steel plate is used as the cathode; the electrolyte is added to the electrolytic container, and the titanium sample is placed in the electrolyte at 80°C for micro-arc oxidation. Layer micro-arc oxidation adopts pulse voltage, the positive voltage is 450V, the negative voltage is 60V, the pulse frequency of micro-arc oxidation is 900Hz, the duty cycle of micro-arc oxidation is 7%, the time of micro-arc oxidation is 6min, and titanium dioxide is formed on the surface of titanium. The micro-arc oxidation coating with a microporous structure is dried to obtain a titanium electrode with a micro-arc oxidation titanium coating on ...

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Abstract

The invention discloses a preparation method of a laminated electrolytic oxidation water electrode. The preparation method comprises the steps that a titanium sample is placed in an electrolytic cellwith electrolyte for micro-arc oxidation, then placed in a reaction kettle for hydrothermal treatment, and finally ruthenium salt heat treatment is carried out, so that a titanium dioxide tin dioxideruthenium dioxide coating is generated on the surface, and the laminated electrolytic oxidation water electrode with excellent electrical performance is obtained. In the electrode, a titanium substrate and the coating are firmly combined without a discontinuous interface. The electrolytic oxidation water obtained by taking the prepared electrode as an anode electrolytic aqueous solution has strongredox capacity and excellent antibacterial property. Meanwhile, the laminated electrolytic oxidation water electrode is low in chlorine evolution potential and shows excellent electrical performancein electrical performance test.

Description

technical field [0001] The invention relates to the technical field of metal surface modification, in particular to a method for preparing a laminated electrolytic oxidation water electrode. Background technique [0002] Titanium and its alloys are widely used in the field of antibacterial electrolytic oxidation water preparation because of their excellent corrosion resistance and electrical conductivity. Titanium with a coating after surface treatment is often used as an electrode. Using micro-arc oxidation technology, oxide coatings can be prepared on the surface of Ti and its alloys; using hydrothermal treatment and other micro-arc oxidation post-treatment processes can further increase the diversity of coatings. By adjusting the electrical parameters, electrolyte composition, and content in the micro-arc oxidation and post-treatment process, the coating composition, structure, and structure can be adjusted to prepare coatings with different functions. Produce titanium e...

Claims

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Application Information

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IPC IPC(8): C23C28/04C25D11/26C23C18/12C02F1/461
CPCC02F1/46109C02F1/4618C02F2001/46138C02F2001/46185C23C18/1216C23C18/1225C23C28/042C25D11/024C25D11/026C25D11/26
Inventor 周睿刘一菲谢维栋和祥陈震程嘉辉李松林徐鑫憨勇
Owner XI AN JIAOTONG UNIV
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