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Preparation method for titanium niobium nitride nanotube array and nitrided layer composite structure

A nanotube array and composite structure technology is applied in the field of preparation of titanium nitride niobium nanotube arrays and nitriding layer composite structures, which can solve problems such as low cost, achieve complete structure and morphology, increase active sites, and large ratio. The effect of surface area

Active Publication Date: 2019-05-28
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem that the existing method cannot prepare titanium niobium nitride nanotube structure at low cost and efficiently and prepare a transitional nitriding layer between the substrate and the film layer, the present invention provides a titanium niobium nitride nanotube array and niobium nitride nanotube array. Preparation method of nitrogen layer composite structure

Method used

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  • Preparation method for titanium niobium nitride nanotube array and nitrided layer composite structure
  • Preparation method for titanium niobium nitride nanotube array and nitrided layer composite structure
  • Preparation method for titanium niobium nitride nanotube array and nitrided layer composite structure

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Embodiment 1

[0043] Using a titanium-niobium alloy with a titanium content of 20 wt% as a substrate, the polished titanium-niobium alloy was placed in acetone, absolute ethanol and deionized water for ultrasonic cleaning in sequence, and the cleaning time was 10 minutes each time. Then put the titanium-niobium alloy in 75g / L CrO 3 , 100ml / LHF solution polishing solution, the polishing temperature is 40°C, and the polishing time is 5min. Take it out, wash it with plenty of deionized water, and dry it. In the electrolytic cell, the polished, polished and cleaned titanium-niobium alloy is used as the anode, and the graphite electrode is used as the cathode, wherein the electrolyte is a water mixed solution containing 0.5wt% fluorine ions, the anodic oxidation voltage is 20V, and the temperature is 25°C. The time is 15 minutes. The anodized titanium-niobium alloy was heat-treated at a constant temperature of 450°C for 2 hours in an air atmosphere, and then cooled with the furnace. The high ...

Embodiment 2

[0045] Using a titanium-niobium alloy with a titanium content of 60wt% as a substrate, the polished titanium-niobium alloy was placed in acetone, absolute ethanol and deionized water for ultrasonic cleaning in sequence, and the cleaning time was 20 minutes each time. Then put the titanium-niobium alloy in 50g / L CrO 3 , 50ml / LHF solution polishing solution, the polishing temperature is 70°C, and the polishing time is 20min. Take it out, wash it with plenty of deionized water, and dry it. In the electrolytic cell, the polished, polished and cleaned titanium-niobium alloy is used as the anode, and the graphite electrode is used as the cathode, wherein the electrolyte is a 0.5wt% fluorine-containing ethylene glycol mixed solution, the anodic oxidation voltage is 60V, and the temperature is 25 ℃, the time is 3h. The anodized titanium-niobium alloy was heat-treated at a constant temperature of 450°C for 2 hours in an air atmosphere, and then cooled with the furnace. The high-temp...

Embodiment 3

[0047] Using a titanium-niobium alloy with a titanium content of 56wt% as a substrate, the polished titanium-niobium alloy was placed in acetone, absolute ethanol and deionized water for ultrasonic cleaning in sequence, and the cleaning time was 10 minutes each time. Then put the titanium-niobium alloy in 50g / L CrO 3 , 100ml / LHF solution polishing solution, the polishing temperature is 60°C, and the polishing time is 15min. Take it out, wash it with plenty of deionized water, and dry it. In the electrolytic cell, the polished, polished and cleaned titanium-niobium alloy is used as the anode, and the graphite electrode is used as the cathode, wherein the electrolyte is a water mixed solution containing 2.5wt% fluorine ions, the anodic oxidation voltage is 30V, and the temperature is 25°C. The time is 30 minutes. The anodized titanium-niobium alloy was heat-treated at a constant temperature of 450°C for 2.5 hours in an air atmosphere, and then cooled with the furnace. The hig...

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Abstract

The invention relates to the technical field of metal surface treatment. In order to solve the problem that an existing method cannot prepare a titanium niobium nitride nanotube structure at low costand high efficiency or prepare a matrix transition nitrided layer on the basis of the structure, the invention provides a preparation method for a titanium niobium nitride nanotube array and nitridedlayer composite structure. The method comprises the steps of (1) pretreatment, (2) anodizing, (3) annealing, and (4) high-temperature nitriding. A nanotube array structure is formed on the alloy surface firstly, and then nitriding and nitrogen diffusion treatment are carried out to convert oxide nanotube arrays into nitride nanotube arrays and meanwhile to form nitrided layers on a barrier layer and the matrix surface. The nanotube structure prepared by the preparation method is controllable, and high in binding force; the process is simple, and the cost is low; and the nanotube structure hasgood electrochemical properties, corrosion resistance and mechanical properties.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a method for preparing a titanium nitride niobium nanotube array and a nitrided layer composite structure. Background technique [0002] Titanium-niobium alloys have the advantages of high melting point, good corrosion resistance, excellent electrical conductivity, and stable chemical properties. By anodic oxidation process, orderly arrays of titanium-niobium oxide nanotubes are grown on the surface of titanium-niobium alloys in situ, which can greatly improve its performance. The specific surface area increases the active sites for electrochemical reactions and can be used as an excellent electrode material. However, titanium niobium oxide has high resistance and poor acid and alkali corrosion resistance. [0003] Titanium niobium nitride has the characteristics of high electrical conductivity, strong acid and alkali corrosion resistance, low friction coefficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C23C8/24C23F17/00
Inventor 张惠斌陈轩晗郑国渠曹华珍
Owner ZHEJIANG UNIV OF TECH
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