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Titanium zirconium tantalum shape memory alloy material and preparation method thereof

A memory alloy and alloy material technology, applied in the field of preparation of functional materials, can solve problems such as poor biocompatibility, poor corrosion resistance, and limited application fields, and achieve high corrosion resistance, excellent corrosion resistance, and good biophase capacitive effect

Active Publication Date: 2017-05-10
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the biotoxicity and poor biocompatibility of the Ni element in TiNi-based alloys, its application as biomedical materials is limited; in addition, many existing shape memory alloys also have the defect of poor corrosion resistance. Deficiency has become an important factor affecting the application of shape memory alloys, which limits the industrial application of shape memory alloys

Method used

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  • Titanium zirconium tantalum shape memory alloy material and preparation method thereof
  • Titanium zirconium tantalum shape memory alloy material and preparation method thereof
  • Titanium zirconium tantalum shape memory alloy material and preparation method thereof

Examples

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Embodiment 1

[0034] In this embodiment, a titanium zirconium tantalum shape memory alloy material (Ti 50 Zr 50 ) 97 Ta 3 , calculated according to the percentage of the amount of each component of the alloy material, consists of 48.5 at.% titanium, 48.5 at.% zirconium and 3 at.% tantalum.

[0035] The present embodiment titanium zirconium tantalum shape memory alloy material (Ti 50 Zr 50 ) 97 Ta 3 A preparation method comprising the steps of:

[0036] a. Weigh 48.5 at% purity of 99.99% Ti, 48.5 at.% purity of 99.9% Zr and 3 at.% purity of 99.99% Ta;

[0037] b. Put the Ti, Zr, and Ta weighed in step a into the cold crucible induction suspension melting equipment, and vacuumize to 1×10 -3 Torr, filled with high-purity argon gas with a purity of 5 N, adjusted the power to 40 kW for preheating, and then adjusted the power to 100 kW for melting, then solidified the titanium-zirconium-tantalum alloy melt, and finally obtained the titanium-zirconium-tantalum alloy casting. ingot.

[0...

Embodiment 2

[0040] This embodiment is basically the same as Embodiment 1, especially in that:

[0041] In this embodiment, a titanium zirconium tantalum shape memory alloy material (Ti 50 Zr 50 ) 95 Ta 5 , calculated according to the percentage of the amount of each component of the alloy material, consists of 47.5 at.% titanium, 47.5 at.% zirconium and 5 at.% tantalum.

[0042] The present embodiment titanium zirconium tantalum shape memory alloy material (Ti 50 Zr 50 ) 95 Ta 5 A preparation method comprising the steps of:

[0043] a. Weigh 47.5 at.% of Ti with a purity of 99.99%, 47.5 at.% of Zr with a purity of 99.9% and 5 at.% of Ta with a purity of 99.99%;

[0044] b. This step is the same as the first embodiment.

[0045] In this example, see Figure 4 ~ Figure 6 , using the method of wire cutting, cut a cylinder with a diameter of d = 3 mm and a height of h = 6 mm from the titanium-zirconium-tantalum shape memory alloy obtained in this embodiment as a test sample for c...

Embodiment 3

[0047] This embodiment is basically the same as the previous embodiment, and the special features are:

[0048] In this embodiment, a titanium zirconium tantalum shape memory alloy material (Ti 50 Zr 50 ) 93 Ta 7 , calculated according to the percentage of the amount of each component of the alloy material, consists of 46.5 at.% titanium, 46.5 at.% zirconium and 7 at.% tantalum.

[0049] The present embodiment titanium zirconium tantalum shape memory alloy material (Ti 50 Zr 50 ) 93 Ta 7 A preparation method comprising the steps of:

[0050] a. Weigh 46.5 at.% of Ti with a purity of 99.99%, 46.5 at.% of Zr with a purity of 99.9% and 7 at.% of Ta with a purity of 99.99%;

[0051] b. This step is the same as the first embodiment.

[0052] In this example, see Figure 7 ~ Figure 9 , using the method of wire cutting, cut a cylinder with a diameter of d = 3 mm and a height of h = 6 mm from the titanium-zirconium-tantalum shape memory alloy obtained in this embodiment a...

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Abstract

The present invention discloses a titanium-zirconium-tantalum shape memory alloy material and a preparation method thereof, wherein the material comprises, by mass, 45.5-48.5 at.% of titanium, 45.5-48.5 at.% of zirconium, and 3-9 at.% of tantalum. According to the present invention, the Ta element is added to improve the mechanical property of the alloy so as to prepare the titanium-zirconium-tantalum shape memory alloy having the good memory effect, wherein the titanium-zirconium-tantalum shape memory alloy can be adopted as the biomedical material to replace the TiNi shape memory alloy so as to avoid the hazard of the Ni element dissolution on human safety, and with the good mechanical property and the good corrosion resistance of the titanium-zirconium-tantalum shape memory alloy, the applications in industry and medicine can be broadened.

Description

technical field [0001] The invention relates to an alloy material and a preparation method thereof, in particular to a memory alloy material and a preparation method thereof, which are applied in the technical field of functional material preparation. Background technique [0002] Titanium is one of the most widely used materials in industry, and plays an important role in industrial fields such as national defense, automobiles, ships, and aerospace, as well as in daily life. Shape memory alloys represented by TiNi-based alloys have a unique shape memory effect, can output large stress and strain, and have been widely used in medicine, industry and life. [0003] The compressive and tensile mechanical properties of binary TiZr alloys are not ideal, in which Ti 50 Zr 50 The compressive strength of the alloy is 1278 MPa, and the fracture deformation is 15.8 %; the tensile strength is 801 MPa, and the fracture deformation is 4.7 %; the shape memory effect is 1.1 % when compre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C1/02
Inventor 操光辉菅桄誉
Owner SHANGHAI UNIV
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