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Porous Nb-Ta-Ti-Si biomedical material and preparation method thereof

A technology of nb-ta-ti-si and biomedical materials, applied in the field of porous Nb-Ta-Ti-Si biomedical materials and its preparation, can solve the problems of elastic modulus stress shielding of dense metal materials, and achieve mechanical properties Proximity, promotion of bridging and occlusal, excellent biocompatibility

Inactive Publication Date: 2020-05-01
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of releasing metal ions from existing biomedical metal materials. The high elastic modulus of dense metal materials can easily cause defects such as stress shielding, and to provide a non-toxic component with an elastic modulus compatible with human bones. Biomedical β-type alloy system with excellent biocompatibility and preparation method thereof

Method used

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  • Porous Nb-Ta-Ti-Si biomedical material and preparation method thereof

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Embodiment 1

[0033] 1. Raw material formula: raw material components and mass percentages are: high-purity Ta powder 10% (purity 99.8%), Ti powder 20% (purity 99.6%), Si powder 0.1% (purity 99.6%), and the balance is Nb powder (purity 99.6%).

[0034] 2. Material preparation: Carry out high-energy ball milling, the ball-to-material ratio is 1:4, the ball milling speed is 400r. / h, and the ball milling time is 4h. During the ball milling process, anhydrous ethanol is added as the ball milling medium, and the ball mill tank is filled with argon to prevent powder oxidation. After ball milling, the powder was dried in a vacuum oven at 37° C. for 1 h to obtain a composite powder. The composite powder and the methyl cellulose aqueous solution with a mass fraction of 2% are infiltrated by ultrasonic vibration according to the mass ratio of 1:6. . The green body was vacuum dried at 37°C for 30 minutes to remove surface moisture, and then cold isostatic pressing was performed under a pressure of 2...

Embodiment 2

[0037] 1. Raw material formula: raw material components and atomic percentages are: high-purity Ta powder 10% (purity 99.8%), Ti powder 20% (purity 99.6%), Si powder 0.3% (purity 99.6%), and the balance is Nb powder (purity 99.6%).

[0038] 2. Material preparation: Carry out high-energy ball milling, the ball-to-material ratio is 1:4, the ball milling speed is 400r. / h, and the ball milling time is 4h. During the ball milling process, anhydrous ethanol is added as the ball milling medium, and the ball mill tank is filled with argon to prevent powder oxidation. After ball milling, the powder was dried in a vacuum oven at 37° C. for 1 h to obtain a composite powder. The composite powder and the methyl cellulose aqueous solution with a mass fraction of 2% are infiltrated by ultrasonic vibration according to the mass ratio of 1:6. . The green body was vacuum dried at 37°C for 30 minutes to remove surface moisture, and then cold isostatic pressing was performed under a pressure of...

Embodiment 3

[0041] 1. Raw material formula: raw material components and mass percentages are: high-purity Ta powder 10% (purity 99.8%), Ti powder 20% (purity 99.6%), Si powder 0.5% (purity 99.6%), and the balance is Nb powder (purity 99.6%).

[0042] 2. Material preparation: Carry out high-energy ball milling, the ball-to-material ratio is 1:4, the ball milling speed is 400r. / h, and the ball milling time is 4h. During the ball milling process, anhydrous ethanol is added as the ball milling medium, and the ball mill tank is filled with argon to prevent powder oxidation. After ball milling, the powder was dried in a vacuum oven at 37° C. for 1 h to obtain a composite powder. The composite powder and the methyl cellulose aqueous solution with a mass fraction of 2% are infiltrated by ultrasonic vibration according to the mass ratio of 1:6. . The green body was vacuum dried at 37°C for 30 minutes to remove surface moisture, and then cold isostatic pressing was performed under a pressure of 2...

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Abstract

The invention discloses a porous Nb-Ta-Ti-Si biomedical material and a preparation method thereof, and belongs to the technical field of a biomedical composite material. The material is prepared fromcomponents in percentage by mass as follows: Nb (10wt.%-20wt.%)-Ta (20wt.%-30wt.%)-Ti (0.1wt.%-0.5wt.%)-Si and the balance Nb. The preparation process of the porous material comprises five main stepsof powder mixing, slurry preparation, carbon fiber template soaking, isostatic pressing treatment and vacuum sintering. The prepared porous alloy exists in a beta type stably, and has the porosity of40%-70%, compression strength of 80-120 MPa and elastic modulus of 2-5 GPa. All elements in the designed alloy system have good biocompatibility, have no toxic or side effects on the human body, havegood mechanical compatibility and can guarantee normal effects of human functions and long-term stability of implants.

Description

technical field [0001] The invention belongs to the technical field of biomedical composite materials, and relates to a porous Nb-Ta-Ti-Si biomedical material and a preparation method thereof. Background technique [0002] Biomedical materials are a class of materials used to diagnose, treat, repair or replace damaged tissues and organs or enhance their functions. They are very important in human life, and their existence is closely related to human health. . At present, the most widely used biomedical metal materials include 316L stainless steel, titanium alloy, cobalt-based alloy, NiTi alloy, etc. However, with the development of medical technology and the improvement of economic level, the shortage of biomedical metal materials in clinical application has gradually become prominent. The elastic modulus of dense metal is much higher than that of human bone tissue, and the stress will be transmitted to the implant material preferentially, thereby producing a "stress shiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/06A61L27/56A61L27/58B22F1/00B22F3/04B22F3/10B22F3/11C22C1/08C22C27/02C22C30/00
CPCA61L27/06A61L27/56A61L27/58C22C27/02C22C30/00C22C1/08B22F3/04B22F3/1007B22F3/1121B22F3/1017A61L2430/02B22F1/10
Inventor 刘珏
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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