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Method of preparing ultra-long Ni-Ti-O nano tube on surface of NiTi alloy

A ni-ti-o, nanotube technology, applied in the field of nanomaterial preparation, can solve problems such as limited length of nanotubes, and achieve the effect of broad application prospects

Inactive Publication Date: 2016-09-21
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electrolytes currently used to prepare Ni-Ti-O nanotubes are all electrolytes containing F ions. Due to the strong aggressiveness of fluorine ions, the length of the nanotubes is very limited, the longest being only 1.3 μm.

Method used

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  • Method of preparing ultra-long Ni-Ti-O nano tube on surface of NiTi alloy
  • Method of preparing ultra-long Ni-Ti-O nano tube on surface of NiTi alloy
  • Method of preparing ultra-long Ni-Ti-O nano tube on surface of NiTi alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Now test the NiTi alloy specimen 1 containing 50.8at% Ni with a diameter of 7.5mm and a thickness of 2mm. The alloy specimen is used as the workpiece electrode, and the graphite rod auxiliary electrode 2 is placed in the electrolytic cell 3. The electrolytic cell 3 It is the ethylene glycol electrolyte 6, the workpiece electrode and the auxiliary electrode are fixed by the bracket 4 on the top of the electrolytic cell, and are respectively connected to the anode and the cathode of the DC power supply 5.

[0024] The specific steps are as follows:

[0025] (1) Pretreatment of NiTi alloy specimens: NiTi alloy specimens are mechanically ground and polished, and then immersed in acetone, alcohol and distilled water for ultrasonic cleaning for 10 minutes to obtain pretreated NiTi alloy specimens;

[0026] (2) Concentrated hydrochloric acid containing 4.2vol% (mass fraction of 37%), 2vol% H 2 Put the O glycol electrolyte 6 into the electrolytic cell 3, fix the auxiliary electrode 2 ...

Embodiment 2

[0029] Now test the NiTi alloy specimen 1 containing 50.8at% Ni with a diameter of 7.5mm and a thickness of 2mm. The alloy specimen is used as the workpiece electrode, and the graphite rod auxiliary electrode 2 is placed in the electrolytic cell 3. The electrolytic cell 3 It is the ethylene glycol electrolyte 6, the workpiece electrode and the auxiliary electrode are fixed by the bracket 4 on the top of the electrolytic cell, and are respectively connected to the anode and the cathode of the DC power supply 5.

[0030] The specific steps are as follows:

[0031] (1) Pretreatment of NiTi alloy specimens: NiTi alloy specimens are mechanically ground and polished, and then immersed in acetone, alcohol and distilled water for ultrasonic cleaning for 10 minutes to obtain pretreated NiTi alloy specimens;

[0032] (2) Concentrated hydrochloric acid containing 4.2vol% (mass fraction of 37%), 8.0vol% H 2 Put the O glycol electrolyte 6 into the electrolytic cell 3, fix the auxiliary electrode ...

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Abstract

The invention discloses a method of preparing an ultra-long Ni-Ti-O nano tube on the surface of NiTi alloy, belongs to the technical field of preparing nano materials and relates to a novel preparation method for a Ni-Ti-O nano tube. The method comprises the following steps: firstly, carrying out grinding and polishing pretreatment on an NiTi alloy specimen, then soaking the pretreated NiTi alloy specimen into a glycol electrolyte containing HCl and H2O, and preparing the Ni-Ti-O nano tube on the surface of the NiTi alloy specimen by adopting an anodic oxidation method. According to the method, by optimizing the preparation technology, the length of the nano tube can be up to 160 microns, thus the method has a wide application prospect in the field of supercapacitors, sensors, electro-catalysis, biomedicines and the like.

Description

technical field [0001] The invention relates to a method for preparing superlong Ni-Ti-O nanometer tubes on the surface of NiTi alloy, belonging to the technical field of nanomaterial preparation. Background technique [0002] In 1999, Zwilling and his collaborators found that anodic oxidation of pure Ti in an electrolyte containing F ions could prepare ordered TiO on its surface. 2 nanotube. Subsequent studies showed that this unique nanotubular structure combined with TiO 2 Excellent biocompatibility, corrosion resistance and electrical properties make it have broad application prospects in dye-sensitized solar cells, gas sensing, biosensing, photocatalytic hydrogen production, lithium-ion batteries, biomedical coatings, etc. . Further studies found that TiO 2 Various properties of nanotubes can be further improved by element doping, and it is possible to endow them with completely new properties. One of the most direct and effective doping methods is to anodize alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/02B82Y40/00
CPCB82Y40/00C25D11/02
Inventor 杭瑞强白龙刘艳莲张翔宇黄晓波唐宾
Owner TAIYUAN UNIV OF TECH
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