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Biomedical beta-titanium alloy material and preparation method thereof

A biomedical, titanium alloy technology, used in metal processing equipment, medical science, prostheses, etc., can solve problems such as reduced corrosion resistance, and achieve the effect of low elastic modulus

Inactive Publication Date: 2009-11-04
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the previous chemical composition, the Mo element has a more obvious effect on the stabilization of the β phase. Replacing Ta with Mo can also reduce the cost, but compared with the previous composition, the corrosion resistance is reduced.

Method used

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  • Biomedical beta-titanium alloy material and preparation method thereof
  • Biomedical beta-titanium alloy material and preparation method thereof
  • Biomedical beta-titanium alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Take β-titanium alloy material, its raw material chemical composition weight percentage composition according to table 1.

[0051] Table 1 The chemical composition of the raw materials of the β-titanium alloy material in weight percentage composition

[0052]

[0053] Among them, Ti is added in the form of 0 grade sponge Ti and Nb, Mo, Ta and Ti intermediate alloy, Zr is added in the form of sponge Zr; Nb, Mo, Ta refractory metal is added in the form of its intermediate alloy with Ti.

[0054]Take 1874.0g 0 grade sponge Ti, 105.0g sponge Zr, 223.0g pure Sn, and 269.0g Ti-50Ta, 789.0g Ti-80Nb and 226.0g Ti-50Mo master alloy, and press them into electrodes by mixing them on a hydraulic press with a pressure of 150t . The electrode is smelted in a vacuum consumable electric arc furnace, and the vacuum degree before smelting starts is 8.0×10 -3 Pa, the vacuum degree during the smelting process is maintained at 5.0×10 -2 Pa ~ 1.0 Pa, and then remelted twice to obtain an ingot ...

Embodiment 2

[0061] Take β-titanium alloy material, and its raw material chemical composition weight percentage composition according to Table 2.

[0062] Table 2 The chemical composition of the raw materials of β-titanium alloy materials in weight percentage composition

[0063]

[0064] Among them, Ti is added in the form of 0 grade sponge Ti and Nb, Mo, Ta and Ti intermediate alloy, Zr is added in the form of sponge Zr; Nb, Mo, Ta refractory metal is added in the form of its intermediate alloy with Ti.

[0065] Take 1654.0g grade 0 sponge Ti, 192.0g sponge Zr, 267.0g pure Sn, 98.0g Ti-50Ta, 954.0g Ti-80Nb and 332.0g Ti-50Mo master alloy, and press them into electrodes on a hydraulic press with 170t pressure after mixing. . The electrode is smelted in a vacuum consumable electric arc furnace, and the vacuum degree before smelting starts is 9.0×10 -3 Pa, the vacuum degree during the smelting process is maintained at 5.0×10 -2 Pa ~ 1.0 Pa, and then remelted twice to obtain an ingot of β-tita...

Embodiment 3

[0072] Take β-titanium alloy material, and its raw material chemical composition weight percentage composition according to Table 3.

[0073] Table 3 The chemical composition of the raw material of β-titanium alloy material in weight percentage composition

[0074]

[0075] Among them, Ti is added in the form of 0 grade sponge Ti and Nb, Mo, Ta and Ti intermediate alloy, Zr is added in the form of sponge Zr; Nb, Mo, Ta refractory metal is added in the form of its intermediate alloy with Ti.

[0076] Take 1846.0g 0 grade sponge Ti, 220.0g sponge Zr, 327.0g pure Sn, 42.0g Ti-50Ta, 1034.0g Ti-80Nb and 389.0g Ti-50Mo master alloy, and press them into electrodes by mixing them on a hydraulic press with a pressure of 170t . The electrode is smelted in a vacuum consumable electric arc furnace, and the vacuum degree before smelting is 1.0×10 -2 Pa, the vacuum degree during the smelting process is maintained at 5.0×10 -2 Pa ~ 1.0 Pa, and then remelted twice to obtain an ingot of β-titani...

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Abstract

The invention relates to a biomedical beta-titanium alloy material with low elastic modulus. The preparation method for the material comprises the steps of raw material preparation, raw material smelting, cogging, forging and the like, namely the method comprises the following steps: preparing a raw material alloy of Nb, Zr, Sn, Ta, Mo and Ti according to a certain proportion, mechanically stirring and mixing the alloy, then pressing the alloy on a hydraulic press to form electrodes, and later smelting the electrodes in a vacuum consumable electro-arc furnace to obtain cast ingots of the beta-titanium alloy material; taking out the cast ingots with certain diameter, heating the cast ingots in a vacuum furnace and then preserving the heat, upsetting and drawing out the heated cast ingots on the hydraulic press or a forging device, and repeating the step twice to thrice to obtain a forging stock of the beta-titanium alloy material; heating the forging stock in the vacuum furnace and then preserving the heat, drawing out the heated forging stock on the hydraulic press or the forging device to obtain the biomedical beta-titanium alloy material with the elastic modulus E of 50 to 80GPa. The alloy has the characteristic of low elastic modulus, has good combination properties such as tensile strength, yield strength, corrosion resistance and the like, and does not contain toxic elements to human body.

Description

Technical field [0001] The invention relates to a biomedical beta-titanium alloy material with low elastic modulus and a manufacturing method thereof, and belongs to a new biomedical titanium alloy product. Background technique [0002] At present, in the three series of stainless steel, cobalt-chromium alloy and titanium as metal materials for human implants, titanium and titanium alloys have excellent biocompatibility, mechanical adaptability, processability and biological environment The lower corrosion resistance has been used more and more clinically. Similarly, the above performance standards are also used to evaluate biomedical titanium alloys. The clinical medical applications of titanium alloy alloys include: orthopedics, orthopedics, dentistry, stomatology, and medical devices, such as interventional vascular stents, and many other medical fields. In clinical applications, although the elastic modulus of the widely used titanium alloys (such as Ti-6AI-4V, etc.) is much ...

Claims

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Application Information

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IPC IPC(8): A61L27/06C22C14/00C22C30/00C22C1/03B22D23/06B21J5/06
Inventor 马凤仓刘平李伟朱坚民杨丽红
Owner UNIV OF SHANGHAI FOR SCI & TECH
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