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Medicinal oxygen-containing beta titanium alloy for orthopedic implantation and preparation method thereof

A beta titanium alloy and titanium alloy technology, applied in the field of oxygen-containing medical beta titanium alloy and its preparation, can solve the problems of low elastic modulus, low alloy strength, and alloy strength less than 600MPa, and achieve low elastic modulus and comprehensive performance. Improved, strength-enhancing effects

Inactive Publication Date: 2010-12-22
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These titanium alloys result in low alloy strength while obtaining low elastic modulus
Some have a higher elastic modulus, but the strength of the alloy is less than 600MPa, such as Ti-35Nb-5Ta-7Zr

Method used

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  • Medicinal oxygen-containing beta titanium alloy for orthopedic implantation and preparation method thereof
  • Medicinal oxygen-containing beta titanium alloy for orthopedic implantation and preparation method thereof
  • Medicinal oxygen-containing beta titanium alloy for orthopedic implantation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Ti-Nb-Zr-Ta-O alloy was prepared by vacuum non-consumable melting method. The Ti-Nb-Zr-Ta alloy melted by vacuum autogenous melting was cut into bulk samples. Cut 80g alloy block, add TiO 2 Powder 0.27g. The weight percent of the button ingot is: Ti: 60%, Nb: 35%, Zr: 3%, Ta: 2%, O: 0.13wt%. The raw materials are smelted in a magnetron tungsten button electric arc furnace. The vacuum degree of the melting furnace is 6.6×10 -3 Pa, the lifting of the tungsten electrode is driven by a micro-motor; the arc ignition method is high-frequency spark ignition, and the high-frequency safety device is automatically cut off after the arc is ignited. The general working current is 700-800A, and the maximum melting current is 1250A. Electromagnetic stirring device is used in the melting process to ensure that each component fully reacts and melts evenly. In order to ensure the uniformity of the ingredients, after each sample was smelted, it was turned over and remelted, and the ...

Embodiment 2

[0026] Other conditions are with embodiment 1, add TiO 2 The powder is 0.53g, and the weight percent of the button ingot is: Ti: 65%, Nb: 35%, Zr: 3%, Ta: 2%, O: 0.26wt%. The chemical composition of the sample is shown in Table 3. The measured room temperature tensile performance data is:

[0027] Tensile strength: 756.86MPa, yield strength: 558.33MPa, modulus of elasticity: 65.00GPa, elongation: 17.80%.

[0028] Table 3Ti-35Nb-3Zr-2Ta-O (wt%) chemical composition

[0029]

Embodiment 3

[0031] Other conditions are with embodiment 1, add TiO 2 The powder is 0.80g, and the weight percent of the button ingot is: Ti: 65%, Nb: 35%, Zr: 3%, Ta: 2%, O: 0.40wt%. The chemical composition of the sample is shown in Table 4. The measured room temperature tensile performance data is:

[0032] Table 4Ti-35Nb-3Zr-2Ta-O (wt%) chemical composition

[0033]

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Abstract

The invention relates to a medicinal oxygen-containing beta titanium alloy for orthopedic implantation and a preparation method thereof, which belong to the technical field of medicinal apparatus and instruments. The preparation method comprises the following steps of: performing vacuum self-consuming smelting treatment on alloy ingredients to obtain a titanium-niobium-zirconium-tantalum (Ti-Nb-Zr-Ta) alloy; performing non-consumable smelting treatment on the Ti-Nb-Zr-Ta alloy; and then performing heat treatment and heat processing sequentially to prepare the medicinal beta titanium alloy and obtain the medicinal oxygen-containing beta titanium alloy, wherein the oxygen element accounts for 0.13 to 0.53 weight percent of the medicinal oxygen-containing beta titanium alloy, and the titanium-niobium-zirconium-tantalum alloy comprises the following components in percentage by mass: 60 percent of Ti, 35 percent of Nb, 3 percent of Zr and 2 percent of Ta. In the preparation method, elements with biological safety are selected and a high-content beta stable element is added, so the alloy has high cold machining property; and the alloy is strengthened by increasing the oxygen element content in the alloy and the oxygen element ratio is optimized by adding the oxygen elements with different content, so the alloy has high strength and low elastic modulus.

Description

technical field [0001] The invention relates to a material in the technical field of medical devices and a preparation method thereof, in particular to an oxygen-containing medical β-titanium alloy for orthopedic implantation and a preparation method thereof. Background technique [0002] In today's field of medical materials, those in orthopedics are used to manufacture various artificial joints, artificial bones and various internal and external fixation devices; those in dentistry are mainly used to manufacture dentures, fillings, implants, orthopedic wires and various auxiliary Materials for therapeutic devices are in increasing demand. All biomedical materials. The application of metal materials is the earliest, and it is still the most widely used in clinical practice. The metal materials initially used in clinics were stainless steels with certain corrosion resistance, among which 316L austenitic stainless steel was the most commonly used, and Co-Cr alloys were deve...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/02C22F1/18A61L27/06
Inventor 王立强位倩倩吕维洁覃继宁张荻
Owner SHANGHAI JIAO TONG UNIV
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