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Biomedical titanium-niobium-based shape memory alloy as well as preparation method, processing method and application method thereof

A memory alloy, biomedical technology, applied in the field of titanium alloy, biomedical materials used for human hard tissue replacement and repair, to achieve good biocompatibility and mechanical compatibility, excellent cold working performance, low cold work hardening rate effect

Active Publication Date: 2012-11-14
GRINM MEDICAL INSTR BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Early research suggested that Al was the cause of Alzheimer's disease, but recent research refuted this conclusion

Method used

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  • Biomedical titanium-niobium-based shape memory alloy as well as preparation method, processing method and application method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]Using sponge titanium, sponge zirconium, niobium-titanium master alloy, aluminum-titanium master alloy, aluminum-silicon master alloy, titanium-tin master alloy as raw materials, the total weight is 5 kg, and the design quality of each component is: titanium (Ti): Yu Quantity, niobium (Nb): 1.5 kg, aluminum (Al): 0.125 kg, others: zirconium (Zr) + silicon (Si) + tin (Sn): 0.195 kg, of which zirconium (Zr) 0.1525 kg, silicon (Si) 0.025 kg, tin (Sn): 0.0175 kg; carbon (C) in the alloy is 0.05%; hydrogen (H) is 0.005%; oxygen (O) is 0.02%; nitrogen (N) is 0.05%; +Nitrogen (N) is 0.07%. Electrodes of 1 to 3 kg are pressed, smelted into cylindrical ingots through a secondary vacuum consumable electric arc furnace, and the vacuum used for smelting is not greater than 5Pa. The billet is forged at a temperature of 1050 ° C, and after homogenization and heat preservation at 950 ° C for 30 minutes, After being processed into bars by cold swaging, cold rolling, cold drawing, etc.,...

Embodiment 2

[0036] Using sponge titanium, sponge zirconium, niobium-titanium master alloy, aluminum-titanium master alloy, aluminum-silicon master alloy, titanium-tin master alloy as raw materials, the total weight is 5 kg, and the design quality of each component is: titanium (Ti): Yu Quantity, niobium (Nb): 1.75 kg, aluminum (Al): 0.275 kg, others: zirconium (Zr) + silicon (Si) + tin (Sn): 0.145 kg, of which zirconium (Zr) 0.275 kg, silicon (Si) 0.025 kg, tin (Sn): 0.0175 kg; carbon (C) in the alloy is 0.05%; hydrogen (H) is 0.005%; oxygen (O) is 0.03%; nitrogen (N) is 0.03%; +Nitrogen (N) is 0.06%. Electrodes of 1 to 3 kg are pressed, smelted into cylindrical ingots through a secondary vacuum consumable electric arc furnace, and the vacuum used for smelting is not greater than 5Pa. The billet is forged at a temperature of 850 ° C, and after homogenization and heat preservation at 1050 ° C for 60 minutes, Ice water quenching; after the quenching treatment, quench again at 400° C., agin...

Embodiment 3

[0039] Using sponge titanium, sponge zirconium, niobium-titanium master alloy, aluminum-titanium master alloy, aluminum-silicon master alloy, titanium-tin master alloy as raw materials, the total weight is 5 kg, and the design quality of each component is: titanium (Ti): Yu Quantity, niobium (Nb): 1.95 kg, aluminum (Al): 0.015 kg, others: zirconium (Zr) + silicon (Si) + tin (Sn): 0.125 kg, of which zirconium (Zr) 0.275 kg, silicon (Si) 0.275 kg, tin (Sn): 0.275 kg; carbon (C) in the alloy is 0.04%; hydrogen (H) is 0.004%; oxygen (O) is 0.02%; nitrogen (N) is 0.05%; +Nitrogen (N) is 0.07%. Electrodes of 1 to 3 kg are pressed, smelted into cylindrical ingots through a secondary vacuum consumable electric arc furnace, and the vacuum used for smelting is not greater than 5Pa. The billet is forged at a temperature of 950 ° C, and after homogenization and heat preservation at 1000 ° C for 40 minutes, Water quenching; after the quenching treatment, it is aged at 500° C. for 15 minut...

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Abstract

The invention relates to a biomedical titanium-niobium-based shape memory alloy as well as a preparation method, a processing method and an application method thereof. The alloy comprises the following chemical compositions by weight percent: 28-39% of niobium, 0.35-5.5% of tin, 0.3-5.5% of aluminum, 0.5-5.5% of silicon, 0.2-5.5% of zirconium and the allowance of titanium. The alloy has the advantages of low elasticity modulus, good biocompatibility and mechanics compatibility, no toxic nickel element, good mechanical property and corrosion resisting property, excellent cold working property and low cold-working hardening ratio; the alloy can be used for cold working with large deformation such as cold rolling, cold wire drawing and the like, and the working cost is low. The titanium-niobium-based shape memory alloy is of the ideal and novel biological shape memory alloy material that replaces the TiNi shape memory alloy and can be widely used for an ultra-flexible bracket, an orthodontics dental arch wire and an orthopedics implantation instrument and the like in the fields of the medical treatment, the sports goods and the like.

Description

technical field [0001] The invention relates to a biomedical titanium-niobium-based shape memory alloy and its preparation, processing method and application, in particular to a novel nickel-free low elastic modulus superelastic biomedical titanium-niobium-based shape memory alloy and its preparation, The processing method and application belong to the technical field of titanium alloy, and also relate to the field of biomedical materials used for human hard tissue replacement and repair. Background technique [0002] Titanium-nickel alloy stent (nickel 55%-titanium) has good early biocompatibility and corrosion resistance, and has been accepted by the public in the United States, Europe and other countries, but its comprehensive performance needs to be improved. For example, nickel-titanium alloy contains potentially toxic elements such as Ni. However, nickel escape from the alloy surface is still a concern; in addition, its low support force limits its clinical applicabili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22F1/18A61L27/06A61L27/04
Inventor 袁志山王江波缪卫东冯昭伟李崇剑刘伟
Owner GRINM MEDICAL INSTR BEIJING CO LTD
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