A kind of niti nano wire and preparation method thereof

A technology of nanowires and alloy ingots, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of inability to obtain NiTi nanowires, low electrode potential, etc., achieving low cost, less drawing passes, and low energy consumption Effect

Active Publication Date: 2022-01-14
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lower electrode potential of NiTi compared with NbTi and TiC, it is impossible to obtain NiTi nanowires during the extraction process by electrolysis.

Method used

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  • A kind of niti nano wire and preparation method thereof
  • A kind of niti nano wire and preparation method thereof
  • A kind of niti nano wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation process of this embodiment is as follows:

[0030] 1. Preparation of Ni 37 Ti 37 V 26 Alloy wire

[0031] (11) Smelting Ni 37 Ti 37 V 26 Alloy: Mix according to the atomic percentage of each element to obtain 1kg of mixed metal raw material, and obtain Ni by arc melting 37 Ti 37 V 26 alloy ingot;

[0032] (12) Forging and drawing: forging the ingot at 750°C, and thermally deforming the ingot into a rod shape with a diameter of about φ5mm; and then hot drawing at 550°C to obtain a wire of φ1mm.

[0033] 2. Preparation of NiTi nanowires by electrolysis of Ni37Ti37V26 alloy wire

[0034] (21) Under normal temperature and pressure, the volume ratio of 65% nitric acid to 99.5% methanol is 1:5 to configure 600ml of electrolyte, evenly mixed and transferred to the electrolytic cell;

[0035] (22) from Ni with a diameter of 1mm 37 Ti 38 V 25 Select 20cm from the composite material wire, after grinding and cleaning, the electrolysis anode is made, a...

Embodiment 2

[0040] The preparation process of this embodiment is as follows:

[0041] 1. Preparation of Ni 31 Ti 29 V 40 Composite wire

[0042] (11) Smelting Ni 31 Ti 29 V 40 Alloy: Mix according to the atomic percentage of each element to obtain 1kg of mixed metal raw material, and obtain Ni by arc melting 31 Ti 29 V 40 alloy ingot;

[0043] (12) Forging and drawing: forging the ingot at 750°C, and thermally deforming the ingot into a rod shape with a diameter of about φ5mm; and then hot drawing at 550°C to obtain a wire of φ1mm.

[0044] 2. To you 31 Ti 29 V 40 Preparation of NiTi nanowires by electrolysis of composite filaments

[0045] (21) Under normal temperature and pressure, the volume ratio of 65% nitric acid to 99.5% methanol is 1:5 to configure 600ml of electrolyte, uniformly mixed and transferred to the electrolytic cell;

[0046] (22) from Ni with a diameter of 1mm 31 Ti 29 V 40 Select 20cm from the composite material wire, after grinding and cleaning, the e...

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Abstract

The invention discloses a NiTi nanowire and a preparation method thereof. Ni, Ti and V elements are mixed according to the atomic percentage Ni:Ti:V=31-37:29-37:26-40, and the alloy is obtained by arc melting Ingot casting; alloy ingots are forged and drawn to obtain wires; under normal temperature and pressure, nitric acid and methanol are prepared with an electrolyte solution at a volume ratio of 1:1 to 10; electrolytic anodes are made with wires, and stainless steel electrodes are used as electrolytic Cathode, put the electrolysis anode and the electrolysis cathode into the electrolytic cell with the electrolyte; use the constant voltage DC power supply as the electrolysis power supply, the output voltage is 2-9V, stop the electrolysis until the current density drops to zero; take out the electrolysis anode , NiTi nanowires were obtained after washing and drying. The present invention adopts the electrolytic method to prepare the electrolytically prepared NiTi nanowires, the diameter of which can be smaller than 100nm, and the length can reach more than 15 μm; the whole preparation method is simple, only needs to be drawn to 1-2mm, and the number of drawing passes is less, and the process is simple , low cost, low energy consumption.

Description

technical field [0001] The invention relates to a preparation method of a nano material, in particular to a NiTi nano wire and a preparation method thereof. Background technique [0002] NiTi shape memory alloy has excellent performance characteristics such as shape memory effect and superelasticity. These performance characteristics are closely related to NiTi martensitic transformation, and its martensitic transformation can be induced by temperature and stress. [0003] The shape memory effect and superelastic properties of NiTi alloy have the potential to be applied in microelectromechanical systems (MEMS). MEMS is a micro system integrating micro mechanism, micro sensor, micro actuator, signal processing and control circuit, until interface, communication and power supply are integrated. Combining the performance characteristics caused by NiTi martensitic phase transformation and the characteristics of MEMS miniaturization, NiTi alloy can be used as a micro-actuator or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00C22C30/00C25F3/02
CPCC22C30/00C22C19/03C22C14/00C25F3/02B22F1/0547B22F1/07
Inventor 史晓斌陈健杨宏亮武逸群李亚华
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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