Biomedical titanium alloy and preparation method thereof

A biomedical and titanium alloy technology, applied in the field of alloy materials, can solve the problems of human bones not growing, high production cost, easy to produce stress shielding, etc., and achieve the effect of lowering temperature, simplifying heat treatment process and low cost

Inactive Publication Date: 2021-08-06
迈特斯迪材料科技秦皇岛有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main titanium materials used in clinical medicine are pure titanium, Ti6Al4V and Ti6Al7Nb alloys, but the above-mentioned titanium materials have high elastic modulus (greater than 100GPa), and when used as implants, they do not match the elastic modulus of human bones, which is easy to Stress shielding is produced. Due to the stress shielding phenomenon, human bones cannot grow during exercise. This is a difficult problem encountered by titanium implants in service
Although many β-titanium alloys and metastable β-titanium alloys have been developed to be used as biomaterials because of their lower elastic modulus (50-70GPa), their production costs (including the use of relatively expensive niobium , tantalum, molybdenum and other elements, and the cost of smelting and subsequent heat treatment changes due to the high melting point of these alloy elements) is higher than the existing clinical alloys, and its clinical application is greatly improved. limit

Method used

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  • Biomedical titanium alloy and preparation method thereof
  • Biomedical titanium alloy and preparation method thereof
  • Biomedical titanium alloy and preparation method thereof

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preparation example Construction

[0033] The present invention also provides a method for preparing the biomedical titanium alloy described in the above technical solution, comprising the following steps:

[0034] Melting the alloy raw materials to obtain titanium alloy ingots;

[0035] The titanium alloy ingot is rolled to obtain biomedical titanium alloy.

[0036] The invention melts alloy raw materials to obtain titanium alloy ingots. In the present invention, there is no special limitation on the type of the alloy raw material, the alloy raw material well-known to those skilled in the art is used, and the titanium alloy with the target composition shall prevail. In the present invention, the alloy raw materials preferably include sponge titanium, sponge zirconium, industrial pure aluminum and niobium wire. In the present invention, there is no special limitation on the ratio of various alloy raw materials, as long as the final alloy composition can meet the above chemical composition requirements of the ...

Embodiment 1

[0054] Soak 85.233g of industrial-grade titanium sponge, 5.1971g of zirconium sponge, 5.7168g of industrial pure aluminum, and 7.276g of niobium wire in absolute ethanol. The ingredients are put into the water-cooled copper crucible of the non-consumable vacuum arc melting furnace. The inner wall of the copper crucible is cleaned and wiped clean in advance; the vacuum degree in the furnace cavity is evacuated to 8×10 -3 Below Pa, fill high-purity argon as protective gas before arc melting, the vacuum degree is 0.035MPa, the arc temperature is 2700°C during each melting, the melting current is 410A, the time of each melting is 6 minutes, and each melting is completed After cooling to obtain ingots, the ingots were turned over and then smelted for seven times to obtain titanium alloy ingots;

[0055] The titanium alloy ingot is heated to a rolling temperature of 800° C., and kept at a temperature of 0.6 hours. The rolling is multi-pass rolling, and the reduction of each pass rol...

Embodiment 2

[0057] Soak 80.657g of industrial-grade titanium sponge, 10.353g of zirconium sponge, 5.694g of industrial pure aluminum, and 6.730g of niobium wire in absolute ethanol. ) ingredients, put them into the water-cooled copper crucible of the non-consumable vacuum arc melting furnace, the inner wall of the copper crucible is cleaned and wiped clean in advance; the vacuum degree in the furnace cavity is pumped to 8×10 -3 Below Pa, fill high-purity argon as protective gas before arc smelting, the vacuum degree is 0.04MPa, the arc temperature is 2700°C during each smelting, the smelting current is 450A, the time of each smelting is 6 minutes, and each smelting is completed After cooling to obtain ingots, the ingots were turned over and then smelted for eight times to obtain titanium alloy ingots;

[0058] The titanium alloy ingot is heated to a rolling temperature of 800°C and kept at a temperature of 0.5 hours. The rolling is multi-pass rolling, and the reduction of each pass rollin...

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Abstract

The invention provides a biomedical titanium alloy and a preparation method thereof, and relates to the technical field of alloy materials. The biomedical titanium alloy comprises the following chemical components in percentage by mass: 5-20% of Zr, 5.5-6% of Al, 6.5-7.5% of Nb and the balance of Ti. According to the biomedical titanium alloy, a Ti-Al-Nb alloy is modified through Zr, Zr has certain beta stability, the beta phase transition point of the titanium alloy can be reduced, more metastable beta phases and alpha'' phases can be formed in the preparation process of the titanium alloy, and then the elastic modulus of the titanium alloy is reduced. The biomedical titanium alloy has relatively low elastic modulus, and can serve as an implant in a human body better, and compared with a beta titanium alloy or a metastable beta titanium alloy, the use of high-melting-point alloy elements is reduced, so that the cost is reduced, and the biomedical titanium alloy is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a biomedical titanium alloy and a preparation method thereof. Background technique [0002] Titanium and titanium alloys have the characteristics of high specific strength, biocompatibility, low elastic modulus, and excellent corrosion resistance in various acid-base and salt environments, and are gradually used as biomedical materials, especially for biological implants. input materials, such as artificial joints that require long-term service and orthopedic devices that need short-term service. At present, the main titanium materials used in clinical medicine are pure titanium, Ti6Al4V and Ti6Al7Nb alloys, but the above-mentioned titanium materials have high elastic modulus (greater than 100GPa), and when used as implants, they do not match the elastic modulus of human bones, which is easy to Stress shielding is generated. Due to the stress shielding phenomenon, human ...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/02C22F1/18C21D9/00A61L27/06A61L27/50B21B1/02
CPCA61L27/06A61L27/50B21B1/026C21D9/0081C22C1/02C22C14/00C22F1/002C22F1/183
Inventor刘日平李波姬朋飞陈博涵郭宇星景勤马明臻张新宇
Owner迈特斯迪材料科技秦皇岛有限公司