Fe-Mn porous alloy material and preparation method and application thereof

An alloy material, fe-mn technology, applied in the field of biomedicine, can solve the problems of human body's natural bone mismatch, stress shielding, high elastic modulus, etc., and achieve the effect of short experiment period, low cost and uniform pores

Active Publication Date: 2019-08-06
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are foreign studies on degradable iron-manganese alloys, they are all prepared by smelting or traditional powder metallurgy methods. Their elastic modulus (93GPa) is relatively high, w

Method used

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  • Fe-Mn porous alloy material and preparation method and application thereof
  • Fe-Mn porous alloy material and preparation method and application thereof
  • Fe-Mn porous alloy material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] First, 15ppi polyurethane sponge (pore size 0.7 ~ 1mm, density 24kg m -3 ) soaked in the NaOH solution whose concentration of the substance is 1mol / L to remove impurities and coarsen, take out room temperature and air-dry for subsequent use; subsequently, measure 6wt.%PVA, 0.1wt.%CMC, and the balance is deionized water and Silica sol (deionized water: silica sol=3:1) is prepared into a mother liquor with a certain viscosity and the pH value is adjusted to 8. This process is carried out in a constant temperature water bath at 100°C; the atomized FeMn alloy powder (mass fraction: Fe47% , Mn 53%, particle size is 25~30μm) to carry out ball milling, and wherein ball material ratio is 20:1, and ball milling speed is 300rpm, mixes with mother liquor after ball milling 5h, and solid-liquid mass ratio is 1:0.5, waits to mix evenly and sponge Immerse in the slurry and extrude to remove excess slurry to form a sponge-slurry complex; after drying and degreasing at 350°C, a degreas...

Embodiment 2

[0068] First, 15ppi polyurethane sponge (pore size 0.7 ~ 1mm, density 24kg m -3 ) soaked in the NaOH solution whose concentration of the substance is 1mol / L to remove impurities and coarsen, take out room temperature and air-dry for subsequent use; subsequently, measure 8wt.%PVA, 0.15wt.%CMC, and the balance is deionized water and Silica sol (deionized water: silica sol=3.5:1) is prepared into a mother liquor with a certain viscosity and the pH value is adjusted to 8. This process is carried out in a constant temperature water bath at 100°C; the atomized FeMn alloy powder (mass fraction: Fe55% , Mn 45%, particle size is 20 ~ 25 μm) for ball milling, wherein the ball-to-material ratio is 20:1, the ball milling speed is 300rpm, the time is 8h, the solid-liquid mass ratio is controlled at 1:0.5, and the sponge is immersed in the Slurry and extruded to form a sponge slurry complex after removing excess slurry; after drying and degreasing at 350°C, a degreased body is formed, and a...

Embodiment 3

[0081] First, 20ppi polyurethane sponge (pore size 0.3 ~ 0.7mm, density 28kg m -3 ) soaked in the NaOH solution whose concentration is 1mol / L to remove impurities and coarsen, take out room temperature and air-dry for subsequent use; subsequently, measure 10wt.%PVA, 0.32wt.%CMC, and the balance is deionized water and Silica sol (deionized water: silica sol = 4:1) is prepared into a mother liquor with a certain viscosity and the pH value is adjusted to 8.2. This process is carried out in a constant temperature water bath at 100°C; the atomized FeMn alloy powder (mass fraction: Fe 55 %, Mn 45%, particle size 15-20μm) for ball milling, wherein the ball-to-material ratio is 30:1, the ball milling speed is 275rpm, the time is 8h, and the solid-liquid ratio is controlled at 1:0.45. After mixing evenly, immerse the sponge in the slurry and squeeze it to remove excess slurry to form a sponge-slurry complex; after drying and degreasing at 350°C, a degreased body is formed, and argon ga...

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Abstract

The invention discloses an Fe-Mn porous alloy material and a preparation method and application thereof. The Fe-Mn binary porous alloy material comprises 15-45wt% of Mn, and the balance Fe, the porosity factor of the Fe-Mn binary porous alloy material is 60-90%, and the pore diameter is 0.25-1mm. The preparation method adopts an organic sponge impregnation method, finally, a sintering body basically reproduces the pattern of sponge, the porosity is uniform, in the process of immerging in a sizing agent, a thixotropic agent CMC and silica sol are added, so that diffusion and combination of metal powder can be effectively promoted, and the Fe-xMn alloy has excellent mechanical properties. The organic sponge impregnation method is simple and controllable to operate, short in experiment period, low in cost, small in pollution, unrestricted in size, and appropriate in mechanical properties, is suitable for large scale industrial production. The mechanical properties of the obtained Fe-Mn binary porous alloy material cooperate with those of human body spongy bone, the degradation speed is appropriate, and the porosity is high and uniform.

Description

technical field [0001] The invention belongs to the field of biomedicine, and in particular relates to a Fe-Mn porous alloy material and its preparation method and application. Background technique [0002] In an increasingly prosperous society, while people's living standards are improving, it will also be accompanied by frequent occurrences of cardiovascular diseases and orthopedic diseases. The implantation of drug-eluting stents and bare-metal stents such as Co-Cr alloys can alleviate these medical problems, but their long-term persistence in the human body will affect the endothelialization of blood vessels and require secondary surgery for removal, thus increasing medical costs and patient costs. pain. As a new type of medical material, biodegradable metal has good biocompatibility, will not be rejected by the body, replaces the wound site to prevent the repair function, and secondly, its own degradability, after the completion of tissue and organ construction It can...

Claims

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Application Information

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IPC IPC(8): A61L27/04A61L27/56A61L27/58C22C38/04C22C33/02C22C22/00C22C1/08B22F3/22B22F3/11
CPCA61L27/042A61L27/58A61L27/56C22C38/04C22C33/0278C22C22/00C22C1/08B22F3/22B22F3/114B22F3/1121B22F3/1007B22F3/1021A61L2430/02
Inventor 林建国刘佩峰张德闯
Owner XIANGTAN UNIV
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