Beta type Ti Nb Zr alloy with low modulus of elasticity, preparation method and application

A low elastic modulus, ti-nb-zr technology, applied in the field of medical materials, can solve the problems of increased alloy cost, increased difficulty of smelting, and alloys that are not easy to organize uniformly, and achieve the effect of controlling alloy cost

Inactive Publication Date: 2007-07-25
SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the addition of refractory rare metals such as Mo, Pd, Sn, and Ta will increase the difficulty of smelting and easily make the alloy composition uneven
In the patent US5169597, the alloy with 10-20% niobium content is a kind of α+β type alloy, and

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Beta type Ti Nb Zr alloy with low modulus of elasticity, preparation method and application
  • Beta type Ti Nb Zr alloy with low modulus of elasticity, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Sponge titanium, sponge zirconium, and niobium-titanium master alloy are used as raw materials, and the weight percentage of each component is Nb35%, Ti65%. After being mixed and pressed to form an electrode, it is smelted into an ingot twice in a vacuum consumable electric arc furnace with a smelting voltage of 30 volts and a smelting current of 1500 amperes. Then directly aged at 500° C. for 6 hours, and water-cooled to prepare the alloy of the present invention. The measured tensile properties at room temperature are:

[0022] σ b =847MPa, σ 0.2 =751MPa, E=60GPa, δ=5.4%

Embodiment 2

[0024] The composition of the alloy is Nb35% and Zr5% by weight of each component. The balance is titanium. Aging treatment at 500° C. for 4 hours, water cooling, and other conditions are the same as in Example 1 to prepare the alloy of the present invention. The measured tensile properties at room temperature are:

[0025] σ b=875MPa,σ 0.2 =760MPa, E=59GPa, δ=8.1%

Embodiment 3

[0027] The alloy composition is that the weight percentage of each component is Nb35%, Zr10%. The balance is titanium. Aging treatment at 500° C. for 4 hours, water cooling, and other conditions are the same as those in Example 1, to prepare the alloy of the present invention. The measured room temperature tensile properties are:

[0028] σ b =706MPa,σ 0.2 =639MPa, E=51GPa, δ=20.1%

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Σ0.2aaaaaaaaaa
Σ0.2aaaaaaaaaa
Σ0.2aaaaaaaaaa
Login to view more

Abstract

This invention discloses a beta-type Ti alloy with low elastic modulus for mrdical application. The Ti alloy comprises: Nb 30-37%, Zr 0-20%, and Ti. The cast structure of the Ti alloy is beta phase. The Ti alloy has moderate strength, and can satisfy the strength requirement for clinical bearing material. The elastic modulus of the Ti alloy is only 45-55% that of Ti-6Al-4V alloy. The alloy is a casting alloy, and has no noble metals added such as Ta, thus effectively lowering the cost. Besides, all the added elements have biocompatibility, and toxic elements are avoided. The Ti alloy has high biocompatibility and mechanical compatibility, and can be used to produce bone plates with reduced stress shielding effect.

Description

technical field [0001] The invention relates to a low elastic modulus β-type Ti-Nb-Zr alloy, a preparation method and an application thereof, and belongs to the field of medical materials used for replacement and repair of human hard tissues. Background technique [0002] Titanium alloys have been widely used in orthopedics, maxillofacial surgery, and cardiovascular because of their high strength, low elastic modulus, good biocompatibility, and excellent corrosion resistance. At present, the most widely used titanium alloy clinically is Ti-6Al-4V, but this alloy contains two elements, V and Al. Al can cause symptoms such as osteomalacia, anemia, and nervous disorders. Toxic elements, more toxic than Ni and Cr. In order to avoid the potential toxicity of V, two new α+β alloys Ti-5Al-2.5Fe and Ti-6Al-7Nb were developed in the mid-1980s [ZWICKER R, BUEHLER K, MUELLER R, et al. Mechanical properties and tissue reactions of a titanium alloy for implant material. Titanium 80 Sci...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C14/00C22C30/00C22C1/03B22D21/06C22F1/18
Inventor 宁聪琴戴尅戎丁冬雁
Owner SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap