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Pearl powder/magnesium alloy quasi-natural bone composite material and preparation method thereof

A composite material and pearl powder technology, which is applied in the field of biomedical implant materials, can solve the problems of too fast degradation and inability to evaluate the material degradation cycle, and achieve the effect of improving corrosion resistance, facilitating degradation cycle and improving corrosion performance.

Inactive Publication Date: 2014-10-15
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to solve the above-mentioned technical problems of medical magnesium and magnesium alloys that degrade too quickly after being implanted in the body, resulting in premature failure of the material and inability to evaluate the degradation cycle caused by uneven corrosion. And provide a kind of pearl powder / magnesium alloy quasi-natural bone composite material, this pearl powder / magnesium alloy quasi-natural bone composite material has higher corrosion resistance, reduces the degradation rate of magnesium alloy compared with traditional magnesium alloy, realizes slow speed Uniform corrosion effect, easy to evaluate the degradation cycle of biological implant materials, and improve the value of magnesium alloys in the field of medical implant materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A pearl powder / magnesium alloy quasi-natural bone composite material, which is prepared by sintering magnesium alloy powder and pearl powder in a plasma discharge sintering furnace at a controlled temperature of 300°C for an instant without heat preservation, and then naturally cooling to room temperature;

[0031] The magnesium alloy powder is a high-purity atomized spherical magnesium powder with a particle size of 50 nm-80 nm;

[0032] Described pearl powder is nanoscale pearl powder, and its particle diameter is less than 100nm;

[0033] The magnesium alloy powder and pearl powder used above are calculated by weight percentage, that is, pearl powder:magnesium alloy powder is 10%:90%.

[0034] The preparation method of above-mentioned a kind of pearl powder / magnesium alloy quasi-natural bone composite material specifically comprises the following steps:

[0035](1) Under the protection of argon, put pure magnesium powder and nano-pearl powder into graphite molds, pr...

Embodiment 2

[0043] A pearl powder / magnesium alloy quasi-natural bone composite material, which is prepared by sintering magnesium alloy powder and pearl powder in a plasma discharge sintering furnace at a controlled temperature of 350°C for an instant without heat preservation, and then naturally cooling to room temperature;

[0044] The magnesium alloy powder is a high-purity atomized spherical magnesium powder with a particle size of 50nm-80nm;

[0045] Described pearl powder is nanoscale pearl powder, and its particle size is less than 100 nm;

[0046] The magnesium alloy powder and pearl powder used above are calculated by weight percentage, that is, pearl powder:magnesium alloy powder is 10%:90%.

[0047] The preparation method of above-mentioned a kind of pearl powder / magnesium alloy quasi-natural bone composite material specifically comprises the following steps:

[0048] (1) Under the protection of argon, put pure magnesium powder and nano-pearl powder into the graphite mold, pre...

Embodiment 3

[0055] A pearl powder / magnesium alloy quasi-natural bone composite material. Magnesium alloy powder and pearl powder are sintered in a plasma discharge sintering furnace at a controlled temperature of 350°C for instant sintering without heat preservation and naturally cooled with the furnace;

[0056] The magnesium alloy powder is a high-purity atomized spherical magnesium powder with a particle size of 50nm-80nm;

[0057] Described pearl powder is nanoscale pearl powder, and its particle diameter is less than 100nm;

[0058] The magnesium alloy powder and pearl powder used above are calculated by weight percentage, that is, pearl powder: magnesium alloy powder is 12%: 88%.

[0059] The preparation method of above-mentioned a kind of pearl powder / magnesium alloy quasi-natural bone composite material specifically comprises the following steps:

[0060] (1) Under the protection of argon, put pure magnesium powder and nano-pearl powder into the graphite mold, press it tightly wi...

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Abstract

The invention discloses a pearl powder / magnesium alloy quasi-natural bone composite material and a preparation method thereof. The pearl powder / magnesium alloy quasi-natural bone composite material is prepared by instantly sintering a mixture of magnesium alloy powder and pearl powder at weight percentage of (80-98%):(2-20%) in a plasma discharge sintering furnace at a control temperature of 300-450 DEG C, performing thermal insulation for 0-5min, and then naturally cooling to a room temperature, wherein the magnesium alloy powder is ZK61 magnesium alloy powder with the particle size of 5-100nm or high-purity atomized spherical magnesium powder. The pearl powder / magnesium alloy quasi-natural bone composite material has higher corrosion resistance, reduces a degradation rate of a magnesium alloy, reaches uniform corrosion in simulating a human body fluid, facilitates evaluating the degradation period of a biological implantation material, and increases a value of the magnesium alloy in the field of medical implantation materials.

Description

technical field [0001] The invention belongs to the field of biomedical implant materials, in particular to a bone replacement material containing pearl powder, that is, a magnesium alloy / pearl powder quasi-natural bone composite material and a preparation method thereof. Background technique [0002] At present, the biometallic materials used clinically mainly include stainless steel, cobalt-chromium alloy and titanium alloy. Corrosion produces toxic ions that reduce their biocompatibility. For example: after 316L stainless steel is implanted into the human body, in the physiological system environment, problems such as crevice corrosion, friction corrosion and fatigue corrosion cracking may sometimes occur, and Ni2+, Cr3+ and Cr5+ will be released due to friction and wear, resulting in loosening of the prosthesis , eventually leading to implant failure; another example: whether it is the initial Ti6Al4V, or the subsequent Ti5Al2.5Fe and Ti6Al7Nb alloys, these alloys cont...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/05B22F3/105
Inventor 何美凤华先阳潘登周锟广桂佳伟王宇晴徐伟张鸿羽
Owner UNIV OF SHANGHAI FOR SCI & TECH