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Method for preparing biomedical porous titanium and titanium alloy material

A biomedical, porous titanium technology, applied in medical science, prosthesis, etc., can solve the problems of polluted environment and undetectable technology, and achieve the effect of good pore-making quality, convenient operation and simple process

Inactive Publication Date: 2011-01-19
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the pore-forming agent is easy to decompose and overflow, there is no detailed research on whether the decomposition product of the pore-forming agent remains in the metal sintered body. If the residue is trace, the existing technology cannot detect it; and such as ammonium bicarbonate, Decomposition products such as urea are discharged into the air and pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1 First, only take a certain amount of titanium metal powder with a mass average particle size of 50 μm, and press it into Φ10×10mm under a pressure of 100MPa 2 Then put the billet into the high-temperature furnace and raise the temperature to T=750°C at a rate of υ=50°C / min, keep it warm for 1 hour, then raise the temperature to T=1250°C at a rate of υ=50°C / min, and keep it for 3 Hours, cooling to obtain porous titanium, its porosity is 7.6%, the average pore size is 20μm, the compressive strength is 692MPa, and the Young's modulus is 105GPa.

Embodiment 2

[0014] Example 2 First take a certain mass of titanium powder with an average particle size of 50 μm, then add 40% of the mass fraction of pore-forming agent magnesium powder with an average particle size of 100 μm, and mix thoroughly in a mixer for 2 hours, and then press it under a pressure of 100 MPa to form a Φ10× 10mm 2 Finally, put the blank into the high temperature furnace and raise the temperature to T=750°C at a rate of υ=50°C / min, keep it warm for 1 hour, and then raise the temperature to T=1250°C at a rate of υ=50°C / min. Keeping it warm for 3 hours, cooling to obtain porous titanium with a porosity of 69%, an average pore size of 230 μm, a compressive strength of 43 MPa, and a Young's modulus of 9.6 GPa.

Embodiment 3

[0015] Example 3 First take a certain mass of titanium powder with an average particle size of 50 μm, then add 40% of the mass fraction of pore-forming agent magnesium powder with an average particle size of 150 μm, and mix thoroughly in a mixer for 2 hours, and then press it under 100 MPa to form a Φ10× 10mm 2 Finally put the blank into the high temperature furnace and raise the temperature to T=750℃ at the speed of υ=50℃ / min, keep it warm for 1 hour, and raise the temperature to T=1250℃ at the speed of υ=50℃ / min, keep it warm Cool for 3 hours to obtain porous titanium with a porosity of 78%, an average pore size of 260 μm, a compressive strength of 35 MPa, and a Young's modulus of 5.3 GPa.

[0016] From the above three examples, it can be seen that after adding the environmentally friendly pore-forming agent metal magnesium, the strength of the sintered body and the Young's modulus value all become smaller, and it can be seen from examples 2 and 3 that the size of the pore-f...

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PUM

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Abstract

The invention provides a method for preparing biomedical a porous titanium and titanium alloy material, belongs to the technical field of the preparation of biomedical materials, and relates to a method for preparing porous materials, in particular the method for preparing the porous titanium and titanium alloy material. The method for preparing the porous titanium and titanium alloy material comprises the following steps of: mixing the mixture of Ti powder and 1 to 40 mass percent of Mg powder serving as a pore-forming agent in a mixer for certain time; filling the mixture in a mould; forming a set shape under certain pressure; putting green bodies into a high temperature furnace; introducing argon; heating to the temperature of between 650 and 750 DEG C; keeping the temperature for 1 to 2 hours; continuously heating the blank to the temperature of between 1,150 and 1,250 DEG C; and keeping the temperature for 3 to 7 hours and cooling to prepare the porous titanium and titanium alloy material. The method has the advantages of simple process, convenient operation, no residue or pollution of the pore-forming agent and high pore-forming quality.

Description

technical field [0001] The invention belongs to the technical field of preparation of biomedical materials, and relates to a preparation method of porous materials, in particular to a preparation method of porous titanium and titanium alloy materials. Background technique [0002] Among the biomedical metal materials, titanium and its alloys are considered to be one of the most attractive metal biomaterials due to their excellent comprehensive properties, good mechanical properties, biocompatibility and corrosion resistance of biomaterials. First, it is the material of choice for artificial bones, joints, blood vessels, tooth roots, and orthopedic implants. Porous titanium and titanium alloy materials have an open porous structure. This unique pore structure has the characteristics of inducing bone tissue and human tissue ingrowth, regeneration and fusion, so that bone implants do not loosen and fall off, and are also beneficial to body fluids. Transportation characteristic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C14/00A61L27/06A61L27/56
Inventor 王轶农刘秀明
Owner DALIAN UNIV OF TECH
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