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A method for preparing Ni-Ti-O Ni-rich nanopores on the surface of NiTi alloy

A ni-ti-o, nanopore technology, applied in the direction of surface reaction electrolytic coating, coating, electrolytic coating, etc., can solve the problems of small diameter of Ni-Ti-O nanopore, low Ni content, large specific surface area, etc. , to achieve good long-term stability, high Ni content, and large specific surface area

Active Publication Date: 2020-01-07
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention adopts ethylene glycol+NH in order to solve 4 F+H 2 Ni-Ti-O nanotubes / pores prepared by O electrolyte system have large diameter, small specific surface area and low Ni content, etc., and a method for preparing Ni-Ti-O Ni-rich nanopores on the surface of NiTi alloy is provided. method, the prepared Ni-Ti-O nanopores have small diameter, large specific surface area and high Ni content

Method used

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  • A method for preparing Ni-Ti-O Ni-rich nanopores on the surface of NiTi alloy
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  • A method for preparing Ni-Ti-O Ni-rich nanopores on the surface of NiTi alloy

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Embodiment 1

[0015] Embodiment 1: A method of preparing Ni-Ti-O rich Ni nanopores on the surface of NiTi alloy, the NiTi alloy specimen is pretreated by grinding and polishing, and then the pretreated NiTi alloy specimen is immersed in Na 2 CO 3 and H 2 In the ethylene glycol electrolyte of O, Ni-Ti-O Ni-rich nanopores were prepared on the surface by anodic oxidation method.

[0016] The specific preparation method is:

[0017] (1) Mechanically grind and polish the NiTi alloy specimen, then immerse it in acetone, absolute ethanol and deionized water for ultrasonic cleaning, and dry it with cold air to obtain the pretreated NiTi alloy specimen;

[0018] (2) With the pretreated NiTi alloy specimen as the anode and the platinum sheet as the cathode, in the presence of 0.5 wt% Na 2 CO 3 and 6.0vol% H 2 Anodic oxidation was carried out in the ethylene glycol electrolyte of O, the oxidation voltage was 15 V, the oxidation temperature was 20 ° C, and the oxidation time was 5 min, and Ni-Ti-O...

Embodiment 2

[0021] Embodiment 2: A kind of Ni-Ti-O Ni-rich nanopore method is prepared on the surface of NiTi alloy, NiTi alloy specimen is carried out grinding and polishing pretreatment, then the NiTi alloy specimen of pretreatment is immersed in Na 2 CO 3 and H 2 In the ethylene glycol electrolyte of O, Ni-Ti-O Ni-rich nanopores were prepared on the surface by anodic oxidation method.

[0022] The specific preparation method is:

[0023] (1) Mechanically grind and polish the NiTi alloy specimen, then immerse it in acetone, absolute ethanol and deionized water for ultrasonic cleaning, and dry it with cold air to obtain the pretreated NiTi alloy specimen;

[0024] (2) With the pretreated NiTi alloy specimen as the anode and the platinum sheet as the cathode, in the presence of 0.2 wt% Na 2 CO 3 and 5.5vol% H 2 O was anodized in ethylene glycol electrolyte, the oxidation voltage was 40 V, the oxidation temperature was 25 °C, and the oxidation time was 7 min. Ni-Ti-O nanopores were pr...

Embodiment 3

[0027] Embodiment 3: A kind of Ni-Ti-O Ni-rich nanopore method is prepared on the surface of NiTi alloy, NiTi alloy specimen is carried out grinding and polishing pretreatment, then the NiTi alloy specimen of pretreatment is immersed in containing Na 2 CO 3 and H 2 In the ethylene glycol electrolyte of O, Ni-Ti-O Ni-rich nanopores were prepared on the surface by anodic oxidation method.

[0028] The specific preparation method is:

[0029] (1) Mechanically grind and polish the NiTi alloy specimen, then immerse it in acetone, absolute ethanol and deionized water for ultrasonic cleaning, and dry it with cold air to obtain the pretreated NiTi alloy specimen;

[0030] (2) With the pretreated NiTi alloy specimen as the anode and the platinum sheet as the cathode, in the presence of 0.9 wt% Na 2 CO 3 and 5.0vol% H 2 O was anodized in ethylene glycol electrolyte, the oxidation voltage was 30 V, the oxidation temperature was 30 °C, and the oxidation time was 10 min, and Ni-Ti-O n...

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Abstract

The invention belongs to the technical field of nano material preparing, aims at solving the problems that an Ni-Ti-O nano tube / hole prepared through an ethylene glycol electrolyte system is large indiameter, small in specific area and low in Ni content and provides a method for preparing an Ni-Ti-O Ni-rich nano hole in the surface of the NiTi alloy. An NiTi alloy test piece is subjected to grinding and polishing pretreatment and is soaked into an ethylene glycol electrolyte containing sodium carbonate and water, and the Ni-Ti-O Ni-rich nano hole is prepared in the surface of the NiTi alloy test piece through an anodic oxidation method. Reaction conditions are moderate, and technology repeatability is high. The prepared Ni-Ti-O nano hole is small in diameter, large in specific area and high in Ni content. The electrode sensitivity is high, the responding time is short, the glucose detection limit is low, the linear range is wide, and long-term stability is good. The charging and discharging speed is high, and circulation stability and rate capability are high. Adhesion and proliferation of cells can be well promoted, and the method has a wide application prospect in the fields ofsupercapacitors, sensors, electrocatalysis, biomedicine and the like.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing Ni-Ti-O Ni-rich nanopores on the surface of a NiTi alloy. Background technique [0002] TiO 2 Due to the advantages of high specific surface area, quantum size effect, and short diffusion path, nanotubes have great application potential in the fields of gas sensors, biosensing, solar cells, photocatalysis, and sewage treatment. Anodizing is a simple, low-cost, safe and non-polluting TiO 2 Nanotube preparation method. In order to expand the TiO 2 The most direct and effective way to improve the application range of nanotubes and improve their performance is to anodize titanium alloys containing required doping elements. [0003] NiTi alloy has broad development prospects in biomedicine and other fields due to its unique shape memory effect, superelasticity and biocompatibility. In addition, Ni and its oxides also have great ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/34C25D11/26
CPCC25D11/26C25D11/34
Inventor 杭瑞强刘艳莲白龙张翔宇黄晓波唐宾
Owner TAIYUAN UNIV OF TECH
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