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A Ti-Mg alloy material, a preparing method thereof and applications of the alloy material

An alloy material, ti-mg technology

Active Publication Date: 2015-01-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In the existing technology, other alloys are prepared by mechanical alloying and spark plasma sintering, but ball milling is a complex system, and the process parameters required for different elemental alloys are different. These process parameters need to be explored through a large number of experiments. inferred
And so far, no reports on the preparation of new biomedical materials Ti-Mg alloys by mechanical alloying and spark plasma sintering have been found at home and abroad.
In addition, there are few reports on the application of titanium-magnesium materials in the field of biomaterials.

Method used

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  • A Ti-Mg alloy material, a preparing method thereof and applications of the alloy material
  • A Ti-Mg alloy material, a preparing method thereof and applications of the alloy material
  • A Ti-Mg alloy material, a preparing method thereof and applications of the alloy material

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Embodiment 1

[0036] A Ti-Mg alloy material of the present invention, the alloy is a solid solution with uniform dispersion and layered composite structure, the phase composition of the alloy is Ti, Mg, TiO and MgO, and the contents of the four phases are respectively Ti 79.1%, Ti 79.1%, Mg 4.5%, TiO 12.8%, MgO 3.6%; porosity 0.56%, Vickers hardness HV406.69, compressive strength 1617.72MPa, elastic modulus 12.8GPa, self-corrosion potential -860.427mV, self-corrosion The current density is 63.71μA / cm 2 .

[0037] The powder metallurgy preparation method of the Ti-Mg alloy material of the present embodiment, the process steps are as follows:

[0038] (1) The mixed powder of pure Ti powder and pure Mg powder was prepared according to the mass fraction of pure Mg powder being 10wt.%. The average particle size of pure Ti powder was 92.24 μm, and the average particle size of pure Mg powder was 206.75 μm. In addition, 4wt.% (the mass fraction of zinc stearate accounting for the sum of the mass ...

Embodiment 2

[0047] A Ti-Mg alloy material of the present invention, the alloy is a solid solution with uniform dispersion and layered composite structure, the phase composition of the alloy is Ti, TiO and MgO, and the phase contents are respectively Ti 78.3% and TiO 19.7% , MgO 2%; porosity 0.32%, Vickers hardness HV465.06, compressive strength 1690.89MPa, elastic modulus 12.4GPa, self-corrosion potential -817.814mV, self-corrosion current density 53.73μA / cm 2 .

[0048] The powder metallurgy preparation method of the Ti-Mg alloy material of the present embodiment, the process steps are as follows:

[0049] (1) The mixed powder of pure Ti powder and pure Mg powder was prepared according to the mass fraction of pure Mg powder being 5wt.%. The average particle size of Ti powder was 53.36 μm, and the average particle size of Mg powder was 152.18 μm. In addition, 4wt.% (the mass fraction of zinc stearate accounting for the sum of the mass of pure magnesium powder, pure titanium powder and zi...

Embodiment 3

[0056] A Ti-Mg alloy material of the present invention, the alloy is a solid solution with uniform dispersion and layered composite structure, the phase composition of the alloy is Ti, Mg, TiO and MgO, and the contents of the four phases are respectively Ti 76.7%, Ti 76.7%, Mg 9.9%, TiO 8.4%, MgO 5%; porosity 0.91%, Vickers hardness HV401.17, compressive strength 1603.06MPa, elastic modulus 12.1GPa, self-corrosion potential -896.209mV, self-corrosion current The density is 85.92μA / cm 2 .

[0057] The powder metallurgy preparation method of the Ti-Mg alloy material of the present embodiment, the process steps are as follows:

[0058] (1) The mixed powder of pure Ti powder and pure Mg powder was prepared according to the mass fraction of pure Mg powder being 50wt.%. The average particle size of Ti powder was 146.73 μm, and the average particle size of Mg powder was 247.13 μm. In addition, 4wt.% (the mass fraction of zinc stearate accounting for the sum of the mass of pure magn...

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Abstract

The invention discloses a Ti-Mg alloy material applied as human tissue bone repair materials and a preparing method thereof. Phase composition of the alloy comprises Ti, Mg, TiO and MgO. The alloy comprises 70-80% of the Ti, 0-10% of the Mg, 8-20% of the TiO and 2-5% of the MgO. The Ti-Mg alloy is prepared by utilization of mechanical alloying and spark plasma sintering. The porosity of the alloy is smaller than 1%, the Vickers hardness of the alloy is HV400-HV500, the compressive strength of the alloy is 1600-1700 MPa, the elasticity modulus of the alloy is 12-13 GPa, the self-corrosion potential of the alloy ranges from -900 mV to -800 mV, the self-corrosion current density is 50-90 [mu]A / cm<2>. The alloy has characteristics of uniform structure, high compactness, good mechanical compatibility, capability of being biodegradable, and good corrosion resistance.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a Ti-Mg alloy material and a preparation method and application thereof. Background technique [0002] The application of medical titanium alloys can be traced back to the 1940s. Both and Leventhal conducted animal experiments and confirmed that pure titanium has good tissue compatibility. In the 1970s, pure titanium and titanium alloys began to be widely used to prepare replacement materials such as artificial joints and artificial bones. Since the late 1970s, Ti-6Al-4V alloy has been used more in the field of artificial joint repair due to its high strength, low elastic modulus, excellent corrosion resistance and friction resistance. In order to avoid the toxicity of vanadium to the human body, European researchers developed two vanadium-free α+β-type Ti-5Al-2.5Fe alloys and Ti-6Al-7Nb alloys in the mid-1980s, namely the second generation of medical titanium alloys. These two a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/04A61L27/06
Inventor 刘咏程铭罗涛李开洋李建波
Owner CENT SOUTH UNIV
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