A kind of high-strength low-modulus medical β-ti alloy material and preparation method thereof

A technology of alloy materials and low modulus, which is applied in the field of medical titanium alloys, can solve the problems of complex preparation process and achieve the effects of simple preparation process, convenient operation and high implantation success rate

Active Publication Date: 2018-02-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of this type of alloy material is relatively complicated. In order to ensure the uniform composition of the alloy, solid solution treatment or aging treatment must be carried out after repeated melting.

Method used

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  • A kind of high-strength low-modulus medical β-ti alloy material and preparation method thereof
  • A kind of high-strength low-modulus medical β-ti alloy material and preparation method thereof
  • A kind of high-strength low-modulus medical β-ti alloy material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this embodiment, a high-strength low-modulus medical β-Ti alloy material contains titanium, niobium, zirconium and indium in mass percentages of 68wt%Ti, 28wt%Nb, 2wt%Zr, 2wt%In, β - Ti alloy materials also contain unavoidable trace impurities.

[0031] The preparation method of the above-mentioned high-strength low-modulus medical β-Ti alloy material comprises the following steps:

[0032] (1) Powder mixing: According to the mass percentage of four elements of titanium, niobium, zirconium and indium in the β-Ti alloy material, the corresponding mass of elemental powder is weighed. Among the elemental powders, the purity of Ti, Nb, and In is 99.95%. %, the powder purity of Zr is 99.6%, and the average particle size of each elemental powder is about 45 μm; then each elemental powder is put into a V-type powder mixer and mixed evenly, and the mixing time is 5 hours to form a mixed powder;

[0033] (2) High-energy ball milling to prepare β-Ti alloy powder: put the mixe...

Embodiment 2

[0037] In this embodiment, a high-strength low-modulus medical β-Ti alloy material contains titanium, niobium, zirconium and indium in mass percentages of 64.2wt% Ti, 26.4wt% Nb, 1.9wt% Zr, and 7.5wt% respectively. %In, β-Ti alloy materials also contain unavoidable trace impurities.

[0038] The preparation method of the above-mentioned high-strength low-modulus medical β-Ti alloy material comprises the following steps:

[0039](1) Powder mixing: According to the mass percentage of four elements of titanium, niobium, zirconium and indium in the β-Ti alloy material, the corresponding mass of elemental powder is weighed. Among the elemental powders, the purity of Ti, Nb, and In is 99.95%. %, the powder purity of Zr is 99.6%, and the average particle size of each elemental powder is about 45 μm; then each elemental powder is put into a V-type powder mixer and mixed evenly, and the mixing time is 5 hours to form a mixed powder;

[0040] (2) High-energy ball milling to prepare β-T...

Embodiment 3

[0044] This embodiment is a high-strength low-modulus medical β-Ti alloy material, in which the mass percentages of the four elements of titanium, niobium, zirconium and indium are 62wt% Ti, 25.2wt% Nb, 1.8wt% Zr, and 11wt% In , β-Ti alloy materials also contain unavoidable trace impurities.

[0045] The preparation method of the above-mentioned high-strength low-modulus medical β-Ti alloy material comprises the following steps:

[0046] (1) Powder mixing: According to the mass percentage of four elements of titanium, niobium, zirconium and indium in the β-Ti alloy material, the corresponding mass of elemental powder is weighed. Among the elemental powders, the purity of Ti, Nb, and In is 99.95%. %, the powder purity of Zr is 99.6%, and the average particle size of each elemental powder is about 45 μm; then each elemental powder is put into a V-type powder mixer and mixed evenly, and the mixing time is 5 hours to form a mixed powder;

[0047] (2) High-energy ball milling to p...

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Abstract

The invention discloses a high-strength low-modulus medical beta-Ti alloy material. A microstructure of the high-strength low-modulus medical beta-Ti alloy material is a complete beta-Ti phase, the beta-Ti alloy material comprises four elements including titanium, niobium, zirconium and indium, and by mass percentage, the titanium element is 62-68%, the niobium is 25.2-28%, the zirconium is 1.8-2%, and the indium is 2-11%. The beta-Ti alloy material has the elastic modulus equivalent to the elastic modulus of the human skeleton and can completely replace current alpha type and alpha+beta type alloy materials to be used in the medical field and replace the human skeleton to be used, the high implanting success rate is achieved, and the beta-Ti alloy material can be well applied to the medical field. The preparing method of the beta-Ti alloy material is simple in principle, metal elements with good biocompatibility and the stable beta phase are selected, alloy powder is prepared through mechanical alloying, and novel beta-Ti alloy with the good mechanical performance and low elastic modulus is prepared through spark plasma sintering and other powder sintering technologies.

Description

technical field [0001] The invention relates to the field of medical titanium alloys, in particular to a high-strength low-modulus medical β-Ti alloy material and a preparation method thereof. Background technique [0002] Titanium alloy has excellent biocompatibility, mechanical properties and corrosion resistance, and has gradually become one of the preferred materials for biomedical materials in recent years. At present, the commonly used medical Ti alloy materials include pure Ti, Ti6Al4V and other alloy materials. They are mainly composed of α and α+β phases, so the elastic modulus of the implant is much larger than that of human bone, and it is easy to generate stress. Shielding causes the implant to fail. It is well known that β-type titanium alloy has a lower elastic modulus than α+β-type titanium alloy, and preparing β-type titanium alloy material is an effective means to reduce the elastic modulus. [0003] At present, many researchers have developed TiNbZr, TiNb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22C1/04
CPCC22C1/0458C22C14/00
Inventor 王芬杨超李元元李洛叶伟文
Owner SOUTH CHINA UNIV OF TECH
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