Metastable beta type Ti-Nb-Ta-Zr-O alloy and preparation method thereof

A ti-nb-ta-zr-o, alloy technology, applied in the field of medical devices, can solve the problems of low tensile strength, application limitation, low elastic modulus, etc., and achieves low work hardening rate, good processing performance, cold working good performance
CN101215655AInactive Publication Date: 2008-07-09SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2008-07-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a metastable beta-type Ti- Nb-Ta-Zr-O alloy and a method for preparation, wherein the components of the alloy are that Nb is 35-38 percent by weight, Ta is 0-3 percent by weight, Zr is 2-4 percent by weight, O is 0.2-0.8 percent by weight, and the other content is Ti. The method comprises V1ing, the Ti- Nb-Ta-Zr-O alloy whose components are uniform is obtained through the vacuum consumable electrode arc furnace melting method. V2ing, Ti- Nb-Ta-Zr-O alloy ingots are done by heat processing treatment in the temperature range of 800-100 DEG C. V3ing, after being done by the solid solution quenching treatment, the Ti- Nb-Ta-Zr-O alloy which is treated in the temperature range of 1000-1200 DEG C is cooled, thereby obtaining a single-phase beta tissue. V4ing, solid solution state Ti- Nb-Ta-Zr-O alloy is done by cold processing treatment in room temperature, thereby obtaining various alloy bars and plates. The alloy of the invention has super elasticity, low modulus, high strength, no biological toxicity, corrosion resistance, excellent biocompatibility and easy processing forming, and the alloy is capable of being widely used on biological implantation materials and other medical devices.
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Description

technical field

[0001] The invention relates to a titanium alloy in the technical field of medical devices and a preparation method thereof, in particular to a metastable β-type Ti-Nb-Ta-Zr-O alloy and a preparation method thereof. Background technique

[0002] Due to its high strength, low elastic modulus, good biocompatibility, and excellent corrosion resistance, titanium alloys have gradually replaced stainless steel and cobalt-based alloys as substitute materials for hard tissues such as bones and teeth. At present, the most widely used titanium alloy in clinical practice is α+β type Ti-6Al-4V, but after a certain period of implantation in the human body, the alloy will release Al ions with cytotoxicity and neurotoxicity due to wear and corrosion, causing osteomalacia Symptoms such as , anemia and nervous disorders, in addition V is also considered to be an element that is toxic to organisms; and the elastic modulus of the alloy is about 115GPa, which is still much highe...

Claims

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