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Preparation of nontoxic magnesium alloy material for biological implantation

A magnesium alloy and biological technology, which is applied in the field of preparation of Mg-Mn and Mg-Zr series biomedical magnesium alloy materials, can solve the defects of single composition of magnesium alloy, plasticity, hardness, mechanical properties and corrosion resistance of castings, magnesium Problems such as insufficient uniformity and roundness of alloy ingot structure

Inactive Publication Date: 2009-08-12
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the above research has made some progress, due to the relatively single composition of the magnesium alloy, the structure of the magnesium alloy ingot is not uniform and round, the stress distribution is not uniform enough, and there are still some defects in the plasticity, hardness, mechanical properties and corrosion resistance of the casting.

Method used

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  • Preparation of nontoxic magnesium alloy material for biological implantation
  • Preparation of nontoxic magnesium alloy material for biological implantation
  • Preparation of nontoxic magnesium alloy material for biological implantation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: The smelting equipment is a thermal resistance furnace with a power of 2kw self-made in the laboratory. The structure is mainly composed of the built-in stainless steel crucible, the resistance wire surrounded by the crucible, as well as the insulation brick and the outer iron sheet.

[0028] The smelting equipment is used to heat and smelt the alloy. During the experiment, the temperature is measured with a thermocouple. When the set pouring temperature is reached, the molten magnesium alloy liquid is released at the furnace mouth for the pouring experiment.

[0029] Using this device to prepare Mg-Mn series biomedical materials, proceed as follows:

[0030] (1) The weight fractions of the chemical components are respectively: Zn2%, Mn0.5%, Ca5.0%, the sum of impurities≤0.1%, and the balance is Mg for raw material preparation;

[0031] (2) Preheat the smelting equipment to 550°C;

[0032] (3) Fill the preheated smelting equipment with argon gas, then ad...

Embodiment 2

[0035] Embodiment 2: the device of this example is identical with embodiment 1, carries out as follows:

[0036] (1) The weight fractions of the chemical components are respectively: Zn4%, Mn0.8%, Ca2.5%, the sum of impurities≤0.1%, and the balance is Mg for raw material preparation;

[0037] (2) Preheat the smelting equipment to 560°C;

[0038] (3) Fill the preheated smelting equipment with argon gas, then add industrially pure magnesium with a purity of 99.99wt% into the smelting equipment, and under the protection of argon gas with a flow rate of 6L / min and a pressure of 14MPa heating to melt

[0039] (4) Use the JWK-702 precision temperature control cabinet to control the temperature of the melt. When the temperature of the molten magnesium reaches 650°C, add 2.0wt% of the total weight of the alloy to the flame-retardant metal calcium and raise the temperature to 710°C, and then add the alloying elements wherein, a melting reaction is carried out;

[0040] (5) After the...

Embodiment 3

[0041] Embodiment 3: the device of this example is identical with embodiment 1, carries out as follows:

[0042] (1) The weight fractions of the chemical components are: Zn 6.0%, Mn 1.9%, Ca 0.6%, the sum of impurities ≤ 0.1%, and the balance is Mg for raw material preparation;

[0043] (2) Preheat the smelting equipment to 580°C;

[0044] (3) Fill the preheated smelting equipment with argon gas, then add industrially pure magnesium with a purity of 99.99wt% into the smelting equipment, and under the protection of argon gas with a flow rate of 5L / min and a pressure of 14MPa heating to melt

[0045] (4) Use the JWK-702 precision temperature control cabinet to control the temperature of the melt. When the temperature of the molten magnesium reaches 660°C, add 5.0wt% of the total weight of the alloy to the flame-retardant metal calcium and raise the temperature to 720°C, and then add the alloying elements wherein, a melting reaction is carried out;

[0046] (5) After the alloy i...

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Abstract

The invention relates to a method for preparing a magnesium alloy material suitable for biological implantation, which comprises the following steps: preparing raw materials by the following chemical compositions in percentage by weight: 2.0 to 6.0 percent of Zn, 0.5 to 1.9 percent of Mn, 0.6 to 5.0 percent of Ca, less than or equal to 0.1 percent of total impurities, and the balance of Mg; or preparing the raw materials by the following chemical compositions in percentage by weight: 2.0 to 6.0 percent of Zn, 0.3 to 0.9 percent of Zr, 0.5 to 5.0 percent of Ca, less than or equal to 0.1 percent of total impurities, and the balance of Mg; preheating smelting equipment and adding the Mg into the raw materials; heating the mixture under the protection of argon gas with the flow rate of between 5 and 6 L / min and the pressure of 14 MPa; adding a fire retardant into the molten liquid when the temperature of the molten liquid reaches between 650 and 660 DEG C, raising the temperature of the molten liquid to between 700 and 720 DEG C, adding other alloy elements into the molten liquid respectively, and performing melting reaction; and stirring the mixture until the mixture is uniformly mixed after alloy is completely molten, keeping the mixture stand for 30 to 40 minutes, pressing a deslagging agent into the solution for deslagging, casting the alloy solution into a cast die after keeping the alloy solution for 10 to 20 minutes at the temperature of between 690 and 710 DEG C, and preparing a Mg-Mn series or Mg-Zr series biomedical magnesium alloy material ingot.

Description

technical field [0001] The invention relates to a preparation method of a magnesium alloy material, in particular to a preparation method of Mg-Mn series and Mg-Zr series biomedical magnesium alloy materials. technical background [0002] In recent years, the research on magnesium and magnesium alloys as hard tissue implant materials has just started abroad. my country has abundant magnesium sources, and the development of magnesium industrial products has been included in the national key research projects. Mg-Mn series and Mg-Mn-Zn series alloys, it was found that the designed magnesium alloys implanted in rats have good results, and important research progress has been made. Li Longchuan of Chongqing University and others studied the corrosion behavior of magnesium in bionic body fluids and alkali heat treatment technology, and found that magnesium metal after alkali heat treatment has good corrosion resistance in bionic body fluids. In the "Journal of Northeastern Univer...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C23/04A61L27/04
Inventor 管仁国王琳琳崔彤石路王付兴李雪李江平肖召辉
Owner NORTHEASTERN UNIV
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