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Method for preparing titanium niobium zirconium tin biomedical titanium alloys by discharge plasma sintering

A discharge plasma and biomedical technology, which is applied in the field of preparing titanium, niobium, zirconium and tin biomedical titanium alloys, can solve undiscovered problems, achieve short sintering time, fast heating and cooling speed, and improve composition segregation and tissue inhomogeneity.

Active Publication Date: 2012-01-11
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no relevant reports have been found at home and abroad on the use of SPS technology to prepare titanium niobium zirconium tin biomedical titanium alloy materials

Method used

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  • Method for preparing titanium niobium zirconium tin biomedical titanium alloys by discharge plasma sintering
  • Method for preparing titanium niobium zirconium tin biomedical titanium alloys by discharge plasma sintering
  • Method for preparing titanium niobium zirconium tin biomedical titanium alloys by discharge plasma sintering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: The process steps of the method for preparing titanium niobium zirconium tin biomedical titanium alloy by spark plasma sintering are:

[0019] (1) According to the mass percentage (wt.%) of Ti64%, Nb24%, Zr4%, and Sn8%, weigh a total of 25 grams of Ti, Nb, Zr, and Sn metal powders with a purity of 99.9% and an average particle size of 45 μm;

[0020] (2) Put the metal powder weighed in step (1) into the ball mill tank of a ball mill, vacuumize to 6 Pa, and then perform ball milling and mixing for 6 hours to obtain mixed metal powder;

[0021] (3) Put the mixed metal powder into a cylindrical graphite mold with an inner diameter of 20mm, then put it into a spark plasma sintering furnace, and apply an axial pressure of 40 MPa through the punches at both ends of the graphite mold, and the system is vacuumed to Sinter after 2 Pa, heat up to 1100°C sintering temperature at a speed of 100°C / min, keep it warm for 5 minutes, keep an axial pressure of 40 MPa during ...

Embodiment 2

[0027] Example 2: The process steps of the method for preparing titanium niobium zirconium tin biomedical titanium alloy by spark plasma sintering are:

[0028] (1) According to the mass percentage (wt.%) of Ti73%, Nb22%, Zr4%, and Sn2%, weigh a total of 25 grams of Ti, Nb, Zr, and Sn metal powders with a purity of 99.9% and an average particle size of 40 μm;

[0029] (2) Put the metal powder weighed in step (1) into the ball mill tank of a ball mill, vacuumize to 10Pa, and then ball mill and mix the powder for 6 hours to obtain the mixed metal powder;

[0030] (3) Put the mixed metal powder into a cylindrical graphite mold with an inner diameter of 20mm, then put it into a spark plasma sintering furnace, and apply an axial pressure of 40 MPa through the punches at both ends of the graphite mold, and the system is vacuumed to Sinter after 2 Pa, heat up to 1100°C sintering temperature at a speed of 100°C / min, keep it warm for 5 minutes, keep an axial pressure of 40 MPa throug...

Embodiment 3

[0034] Example 3: The process steps of the method for preparing titanium niobium zirconium tin biomedical titanium alloy by spark plasma sintering are:

[0035] (1) According to the mass percentage (wt.%) of Ti69%, Nb23%, Zr3%, and Sn5%, weigh a total of 25 grams of Ti, Nb, Zr, and Sn metal powders with a purity of 99.9% and an average particle size of 10 μm;

[0036] (2) Put the metal powder weighed in step (1) into the ball mill tank of a ball mill, vacuumize to 8 Pa, and then perform ball milling and mixing for 12 hours to obtain mixed metal powder;

[0037] (3) Put the mixed metal powder into a cylindrical graphite mold with an inner diameter of 20 mm, and then put it into a spark plasma sintering furnace, and apply an axial pressure of 30 MPa through the punches at both ends of the graphite mold, and the system is vacuumed to After sintering at 4 Pa, heat up to 1000°C sintering temperature at a speed of 80°C / min, keep it warm for 8 minutes, and keep an axial pressure of...

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Abstract

The invention relates to a method for preparing titanium niobium zirconium tin biomedical titanium alloys by discharge plasma sintering, and belongs to the technical field of biomedical material preparation. The method provided by the invention comprises the following steps of: weighing Ti, Nb, Zr and Sn metal powders according to a chemical composition ratio, mixing the powders by a ball mill, putting into a graphite die, then placing into a discharge plasma sintering furnace, applying axial pressure of 10-40MPa, sintering in vacuum with the vacuum degree being 2-6 Pa while the heating rate is 50-100 DEG C / min and the sintering temperature is 950-1100 DEG C, keeping warm for 5-10 min after reaching the sintering temperature, and cooling in furnace to room temperature to obtain the titanium niobium zirconium tin biomedical titanium alloy material. The titanium niobium zirconium tin biomedical titanium alloys prepared by the method has uniform components and microstructure, high density (more than 98%), low elastic modulus (41-50GPa) and the like. In the mean while, the method provided by the invention has advantages of simple process, convenient operation and low cost, and is easy to realize industrial production.

Description

technical field [0001] The invention relates to a method for preparing titanium-niobium-zirconium-tin biomedical titanium alloy, in particular to a method for preparing titanium-niobium-zirconium-tin biomedical titanium alloy by spark plasma sintering, which belongs to the technical field of biomedical material preparation. Background technique [0002] Among the biomedical metal materials for artificial implants, titanium alloys have become artificial joints (hip, knee, shoulder, etc.) due to their good biocompatibility, mechanical properties (high specific strength, low elastic modulus, etc.) , ankle, elbow, wrist, knuckle, etc.), bone trauma products (intramedullary nails, plates, screws, etc.), spinal orthopedic internal fixation systems, dental implants, artificial heart valves, interventional cardiovascular stents and other medical implants It is an ideal material for products and has been widely used in the above fields. [0003] In order to achieve long-term and non...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/04
Inventor 张玉勤谷一蒋业华周荣
Owner KUNMING UNIV OF SCI & TECH
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