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A kind of porous metal material and preparation method thereof

A technology of porous metal and metal materials, applied in metal processing equipment, thin material processing, prostheses, etc., can solve the problems of uncertain elastic modulus, undetermined thickness uniformity, limited liquid transmission capacity, etc. Growth, stress relief shielding, good penetration effect

Active Publication Date: 2020-09-15
CHONGQING RUNZE PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The prepared bone prosthesis has only two-level pores, and the microscopic pore structure is only on the surface of the macroscopic pore wall, not inside it. The cavity wall itself of the microscopic pore structure is still a compact entity. Connected, its ability to transport liquid is still limited, due to the addition and randomness of the microscopic pore structure, the elastic modulus of the final material as a whole is uncertain, and the elastic modulus of the microscopic pore structure has not been determined, and the microscopic The uniformity of the thickness of the pore structure on the surface of the macroscopic pore wall cannot be determined, and it is also difficult to ensure the uniformity of its performance, so it is difficult to meet the functional requirements of artificial bone

Method used

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  • A kind of porous metal material and preparation method thereof
  • A kind of porous metal material and preparation method thereof
  • A kind of porous metal material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0053] A porous metal material, the raw material of which is metal tantalum powder, which includes a material body, wherein the material body is a multi-level porous material, and the multi-level porous material is classified according to the pore size of the material, and the number of classification stages is three , the aperture of the first-stage cavity is 400µm-600µm, the aperture of the second-stage cavity is 25µm-60µm, and the aperture of the third-stage cavity is 200nm-500nm.

[0054] The material body of this kind of porous material is composed of cavities classified according to the pore size of the material, and the cavity wall surrounding the cavity. Composed of materials, the pores of each level of porous material are connected to each other and the pores of each level of porous material are also connected to each other. Each level of porous material is a continuous structure. The maximum outer boundary of each level of porous material is the same as the entire Th...

Embodiment 2

[0087] A porous niobium material, which is a multi-level porous material, is classified according to the pore size of the material. The tertiary cavity has a pore size of 100nm-350nm.

[0088] The material body of this kind of porous material is composed of cavities classified according to the pore size of the material, and the cavity walls surrounding the cavities. The cavity walls surrounding the cavities forming the upper-level porous materials are composed of lower-level porous materials in a three-dimensional space. The cavities of each level of porous material are connected to each other and the cavities of each level of porous material are also connected to each other. Each level of porous material is a continuous structure. Rather, the cavities of the siblings of each stage of the porous material are evenly distributed within the body of the material.

[0089] Its preparation method is:

[0090] (1) Material preparation

[0091] Niobium powder with a particle size o...

Embodiment 3

[0098] A porous titanium material, which is a hierarchical porous material, is classified according to the pore size of the material, and the grading series is two levels; the pore diameter of the small pore cavity is 250nm-470nm, and the pore diameter of the large pore cavity is 130µm-360µm.

[0099] The material body of this kind of porous material is composed of cavities classified according to the pore size of the material, and the cavity walls surrounding the cavities. The cavity walls surrounding the cavities forming the upper-level porous materials are composed of lower-level porous materials in a three-dimensional space. The cavities of the porous materials at different levels are connected to each other, and the cavities of the porous materials at all levels are also connected to each other.

[0100] Its preparation method is:

[0101] (1) Material preparation

[0102] Use 250nm-470nm titanium powder and ammonium chloride with a particle size of 350nm-570nm as the sm...

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Abstract

The invention discloses a porous metal material. The material is a multi-level porous metal material, which is classified according to the pore size of the material, and the number of grading stages is at least two; The elastic modulus of the porous metal material is below 80GPa, and the porosity is not less than 48%. The preparation method is as follows: mixing the raw material powder used to prepare porous metal materials and the pore-forming agent used to prepare the smallest pore cavity to prepare a slurry, uniformly filling the slurry into a polymer material support, forming a green body and drying, The mixed particles are obtained by crushing, and the mixed particles are evenly mixed with the pore-forming agent used to prepare a cavity larger than the smallest cavity to form a dense green body, which is then vacuum sintered, and the conventional follow-up treatment is carried out according to the raw material process. The material has multi-level elastic modulus to meet different use requirements, has good penetration, is especially suitable as a tissue regeneration material, and has a simple and convenient preparation method and is easy to realize.

Description

technical field [0001] The invention relates to a porous metal material, in particular to a porous metal material with a multi-level pore structure and a preparation method. Background technique [0002] Porous metal materials, as a new type of engineering material with excellent performance in both function and structure, have been widely used in industries such as metallurgical machinery, petrochemical industry, energy and environmental protection, national defense and military industry, nuclear technology, biopharmaceuticals, and medical equipment. In particular, porous metal materials are widely used in the medical and health industry, especially as implants. Most of the medical porous metal materials that have been used so far are single-pore materials. Compared with the original dense materials, these materials have significantly reduced the overall elastic modulus. The elastic modulus of the prepared porous titanium reported in the literature is 0.1 GPa-30GPa, The el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/42A61L27/04A61L27/06A61L27/54B22F1/10
CPCA61L27/06C22C1/0433C22C1/045C22C14/00C22C19/07C22C27/02C22C38/44B22F3/1103B22F3/1121B22F9/04C22C1/08B22F3/114B22F1/10Y10T428/12479Y10T428/12042Y10T428/12021A61L27/045C22C27/04
Inventor 叶雷
Owner CHONGQING RUNZE PHARM CO LTD
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