Porous niobium-tantalum-titanium alloy material with controllable pores and preparation method thereof

A technology of tantalum-titanium alloy and porous niobium, applied in the field of porous niobium-tantalum-titanium alloy material and its preparation, can solve the problem of uncontrollable pore porosity, affecting the mechanical properties and biocompatibility of the alloy, and unable to simulate the morphology of human bone tissue and other problems, to achieve excellent bionic properties, excellent biocompatibility, and high porosity

Inactive Publication Date: 2019-05-07
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, impurities will inevitably be introduced into the alloy prepared by the above method, thereby affecting the mechanical properties and biocompatibility of the alloy; at the same time, the porosity of the obtained pores is mostly uncontrollable, and the pore morphology is mostly isotropic, which cannot simulate human bone. Tissue complex topographical features

Method used

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  • Porous niobium-tantalum-titanium alloy material with controllable pores and preparation method thereof
  • Porous niobium-tantalum-titanium alloy material with controllable pores and preparation method thereof
  • Porous niobium-tantalum-titanium alloy material with controllable pores and preparation method thereof

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Experimental program
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Embodiment 1

[0035] 1. Mixing of powders: Weigh 30 g of niobium, tantalum, and titanium powders in total, and the powders are in an atomic ratio of Nb:Ta:Ti=50:25:25. When the powder is pre-mixed, the mass ratio of the ball to the material is 1:4, the mixing time is 8 hours, and the speed of the mixer is 200r / min.

[0036] 2. Preparation of slurry: Weigh 3g of polyvinyl alcohol and fully dissolve it in deionized water, and mix the Nb-Ta-Ti composite powder with an organic solvent evenly to form a slurry. The prepared slurry needs to be placed in an electromagnetic stirrer Stir for 1 hour to ensure uniform dispersion of the metal powder.

[0037] 3. Impregnation process: Cut the polyurethane template to And pretreatment in 10% NaOH aqueous solution for 30min, the treatment temperature is 40°C. Fill the Nb-Ta-Ti composite powder slurry into the polymer porous template with a solid content ratio of 3g / ml, and dry it sufficiently to obtain a porous alloy scaffold containing the Nb-Ta-Ti ter...

Embodiment 2

[0043] 1. Mixing of powders: Weigh 30 g of niobium, tantalum, and titanium powders in total, and the powders are in an atomic ratio of Nb:Ta:Ti=50:25:25. When the powder is pre-mixed, the mass ratio of the ball to the material is 1:4, the mixing time is 8 hours, and the speed of the mixer is 200r / min.

[0044] 2. Preparation of slurry: Weigh 3g of polyvinyl alcohol and fully dissolve in deionized water, configure Nb-Ta-Ti composite powder and mix with organic solvent evenly to form a slurry. The prepared slurry needs to be stirred in an electromagnetic stirrer 1 hour to ensure the uniformity of metal powder dispersion.

[0045] 3. Impregnation process: Cut the polyurethane template to And pretreatment in 10% NaOH aqueous solution for 30min, the treatment temperature is 40°C. The Nb-Ta-Ti alloy slurry is filled into the polymer porous template with a solid content ratio of 4.5g / ml, and after being fully dried, the green body of the porous alloy stent containing the Nb-Ta-Ti ...

Embodiment 3

[0051] 1. Mixing of powders: Weigh 30 g of niobium, tantalum, and titanium powders in total, and the powders are in an atomic ratio of Nb:Ta:Ti=50:25:25. When the powder is pre-mixed, the mass ratio of the ball to the material is 1:4, the mixing time is 8 hours, and the speed of the mixer is 200r / min.

[0052] 2. Preparation of slurry: Weigh 5g of polyvinyl alcohol and fully dissolve it in deionized water, configure Nb-Ta-Ti composite powder and mix with organic solvent evenly to form a slurry. The prepared slurry needs to be stirred in an electromagnetic stirrer 1 hour to ensure the uniformity of metal powder dispersion.

[0053] 3. Impregnation process: Cut the polyurethane template to And pretreatment in 10% NaOH aqueous solution for 30min, the treatment temperature is 40°C. The Nb-Ta-Ti alloy slurry is filled into the polymer porous template with a solid content ratio of 4.5g / ml, and after being fully dried, the green body of the porous alloy stent containing the Nb-Ta-...

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Abstract

The invention discloses a porous niobium-tantalum-titanium alloy material with controllable pore spaces and a preparation method of the porous niobium-tantalum-titanium alloy material. The porous niobium-tantalum-titanium alloy material is prepared from, by atomic percent, 5%-25% of Ta, 5%-25% of Ti and the balance Nb; and a template impregnation method and a powder metallurgy method are combined,the purpose of controlling the porosity, pore diameter and other parameters of porous alloy is achieved by controlling the concentration of an organic adhesive solution and the solid content of impregnation slurry, and therefore the fundamental purpose of controlling the mechanical property and biological properties of an alloy support is achieved. According to the prepared porous niobium-tantalum-titanium alloy material, the porosity is 50%-80%, the open porosity is larger than or equal to 90%, the pore diameter is 47-536 micrometers, the compression strength is 18-122 MPa, the modulus of elasticity in compression is 0.11-2.08 GPa, meanwhile, pore spaces present anisotropic characteristics, and more excellent structure and property simulation performance are achieved compared with traditional porous alloy.

Description

technical field [0001] The invention belongs to the field of biomedical metal materials, and in particular relates to a porous niobium-tantalum-titanium alloy material with controllable pores and a preparation method thereof. Background technique [0002] Biomedical materials are mainly used for diagnosing, treating, repairing or replacing the damaged tissues and organs of living organisms or improving their functions. According to the composition and properties of materials, biomedical materials can be divided into biomedical metal materials, biomedical polymer materials, and biomedical inorganic non-metallic materials. At present, the most widely used biomedical metal materials include titanium alloys, stainless steel, and cobalt-based alloys. However, elements such as V, Co, and Al in traditional metal materials have teratogenic, sensitizing and even carcinogenic side effects on the human body. Therefore, β-type alloys with no toxic side effects, better biocompatibility...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/02B22F3/11A61L27/04A61L27/06A61L27/56
CPCA61L27/047A61L27/06A61L27/56A61L2300/412B22F3/1103C22C27/02
Inventor 阮建明刘珏杨海林常林
Owner CENT SOUTH UNIV
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