Beta type titanium alloy for surgical implanting piece

A technology for surgical implantation and titanium alloys, which is applied in the field of metal alloy materials for surgical implantation and type 3 titanium alloys for surgical implants, can solve the problem of increasing the number of smelting times, raw materials and processing costs, difficult to control the metallurgical quality of ingots, and alloys. Insufficient tensile strength and other problems, to achieve the effect of low cost, low elastic modulus and good plasticity

Inactive Publication Date: 2004-04-21
XIAN CONTINENTAL BIOMATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, among these alloys, some have a higher modulus of elasticity (90-100GPa) or a modulus of elasticity as low as 55GPa, but at this time the tensile strength of the alloy is less than 600MPa, such as Ti35Nb5Ta7Zr alloy; some alloys have low elongation; Some alloys contain toxic element Al, such as Ti15Mo5Zr3

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Using grade 0 sponge titanium Ti, atomic energy zirconium zirconium Zr, pure Sn plate, and Ti-15Mo and Ti-52Nb master alloys as raw materials, the electrodes are mixed and pressed into electrodes, and then smelted twice in a vacuum consumable electric arc furnace. Among them, the primary melting voltage is 32 volts, and the melting current is 1300 amps; the secondary smelting voltage is 35 volts, and the smelting current is 2,200 amps; the vacuum degree before melting is not lower than 10 -2 Pa, an alloy ingot is prepared; the weight percentage composition of the alloy ingot is: Zr: 3%, Sn: 2%, Mo: 3%, Nb: 25%, and the balance is Ti. The ingot is forged at 1050°C. After several times of upsetting and drawing, it is first forged into a □42mm square bar, and then forged into a φ37mm round bar. Then it goes through continuous hot rolling at 950°C to make a thin rod with a diameter of φ12.5mm, and its original state performance is σ b =790MPa; σ 0.2 =435MPa; δ s = 21% %;...

Embodiment 2

[0018] Other conditions are the same as Example 1, and the weight percent composition of the alloy ingot is Zr: 3.5%, Sn: 2%, Mo: 3%, Nb: 25%, and the balance is Ti. After solution treatment at 750° C. / 1 hour and air cooling, the alloy of the present invention was obtained. The measured tensile mechanical property parameters of the alloy at room temperature are:

[0019] σ b =660MPa; σ 0.2 =340MPa; δ s = 27.5%; Ψ = 79%; E = 60.9 GPa.

Embodiment 3

[0021] Other conditions are the same as Example 1, and the weight percent composition of the alloy ingot is Zr: 2.5%, Sn: 2%, Mo: 3%, Nb: 25%, and the balance is Ti. After solution treatment at 820°C / 1 hour and air cooling, the alloy of the present invention was obtained. The measured tensile mechanical property parameters of the alloy at room temperature are:

[0022] σ b =630MPa; σ 0.2 =385MPa; δ s = 39%; Ψ = 82.5%; E = 60.7GPa.

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PUM

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Abstract

A beta-type Ti alloy used for the surginal implant contains Zr (0.1-9.5 wt.%), Sn (0.5-9.5), Mo (0.5-9.5), Nb (20-30), C (0-0.03), N (0-0.04), H (0-0.003), O (0-0.12), and Ti (rest). It has high performance including tension strength, yield strength, elongation percentage, etc.

Description

technical field [0001] A type 3 titanium alloy for surgical implants, relating to a metal alloy material for surgical implants, in particular to a surgical medical implant material for human hard tissue repair and replacement, such as bones, teeth, joints, splints β-type titanium alloys for surgical implants such as plates and intramedullary nails. Background technique [0002] Titanium alloy has become an ideal biomedical material after traditional stainless steel and cobalt-based alloys due to its high specific strength, low elastic modulus, corrosion resistance, and excellent biocompatibility. Medical stainless steel and cobalt-based alloys are increasingly being used in clinical applications due to the presence of toxic elements such as nickel Ni, cobalt Co, and chromium Cr and their high elastic modulus. As early as the early 1940s, pure titanium was introduced into the biomedical field. Later, due to clinical needs, α-type titanium alloy Ti3Al2.5V and α+β-type titaniu...

Claims

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Application Information

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IPC IPC(8): A61L27/06C22C14/00
Inventor 于振涛周廉王克光赵彬洪权牛金龙付艳艳蔡玉荣梁芳慧
Owner XIAN CONTINENTAL BIOMATERIALS CO LTD
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