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A kind of human body implant material coated with nano-carbon crystal film on the surface and its preparation method

A technology of nano-carbon crystals and implant materials, which is applied in the field of human implant materials and its preparation, can solve the problems of reduced service life of magnesium, fast corrosion rate of magnesium, and poor corrosion resistance of magnesium, so as to reduce corrosion, relieve corrosion, The effect of improving binding force

Active Publication Date: 2020-11-13
ZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the corrosion resistance of magnesium is poor, and the corrosion rate of magnesium is faster in the presence of chloride ions or when the pH value of the medium is lower than 11.5
The corrosion of magnesium will lead to the generation of hydrogen gas, alkalinize the surrounding environment, deteriorate the environment around implanted materials, and reduce the service life of magnesium implanted in the human body, which are not conducive to the application of magnesium alloys in the human body

Method used

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  • A kind of human body implant material coated with nano-carbon crystal film on the surface and its preparation method
  • A kind of human body implant material coated with nano-carbon crystal film on the surface and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A human body implant material coated with a nano-carbon crystal film on the surface, the human body implant material uses gradient transition layer technology, with titanium as the transition layer element, between the hard nano-carbon crystal film and soft metal magnesium Introduce the gradient transition layer to get.

[0023] The preparation method of the human body implant material coated with nano-carbon crystal film on the surface comprises the following steps:

[0024] 1) Heat treatment: Magnesium alloy sample (in this embodiment, the extruded AZ31B magnesium alloy is selected as the material, and the size is

[0025] 1cm×1cm×0.5cm) were soaked in alcohol for 30 minutes, washed with absolute ethanol for 3 times (the purpose of soaking and cleaning is to remove the oil stain on the surface), and dried with nitrogen, then put it into a constant temperature vacuum chamber for use; put it into Rapidly raise the temperature to 250°C in the muffle furnace for 1 hour, ...

Embodiment 2

[0031] A human body implant material coated with a nano-carbon crystal film on the surface, the human body implant material adopts gradient transition layer technology, uses titanium as a transition layer element, and is placed between the hard nano-carbon crystal film and soft metal magnesium Introduce the gradient transition layer to get.

[0032] The preparation method of the human body implant material coated with nano-carbon crystal film on the surface comprises the following steps:

[0033] 1) Heat treatment: Magnesium alloy samples (in this example, extruded AZ31B magnesium alloy was selected as the material, with a size of 1cm×1cm×0.5cm) were soaked in alcohol for 40 minutes and washed with absolute ethanol for 4 times (the purpose of soaking and cleaning is to Remove the grease on the surface), blow dry with nitrogen, put it in a constant temperature vacuum chamber for use; put it in a muffle furnace and quickly heat it up to 250°C for 1 hour, take it out, put it in w...

Embodiment 3

[0039] A human body implant material coated with a nano-carbon crystal film on the surface and a preparation method thereof. The difference from Example 1 lies in that in step 5), 6g of nano-carbon crystals are used. All the other are with embodiment 1.

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Abstract

The invention discloses a human body implant material with the surface plated with nanocarbon crystal film and a preparation method of the human body implant material with the surface plated with nanocarbon crystal film. The human body implant material is obtained in the manner that by the adoption of a gradient transition layer technology, titanium is used as the transition layer element, and thegradient transition layer is introduced between the hard nanocarbon crystal film and soft metal magnesium. According to the human body implant material with the surface plated with the nanocarbon crystal film, through a quenching heat treatment technology, the metallographic phase structure in the magnesium alloy is changed, so that the hardness of the magnesium alloy is improved; through quenching heat treatment, crystal grains in the magnesium alloy are refined and more evenly distributed, and the corrosion resistance is improved by a certain extent; titanium carbide is used as the transition layer, the titanium carbide has good wear resistance and high hardness, strength and rigidity and also has excellent crack resistance capacity, and stress concentration is not prone to happen. Meanwhile, due to introducing of the titanium element, stress relief is promoted, and meanwhile the stability of non-crystalline carbon film can also be improved.

Description

technical field [0001] The invention belongs to the technical field of biomedical materials, and in particular relates to a human body implant material coated with a nano-carbon crystal film on the surface and a preparation method thereof. Background technique [0002] Magnesium alloy, as the third-generation biomedical human implant material, has biological activity and can be degraded and absorbed by the human body. Since its degradation products are essential elements of the human body, they can be absorbed by the human body and excreted from the body without causing adverse reactions. As a cardiovascular stent material, it has good mechanical properties and biocompatibility. Therefore, magnesium is not only feasible as a biomedical material, but also has economic significance and development prospects. However, the corrosion resistance of magnesium is poor, and the corrosion rate of magnesium is faster in the presence of chloride ions or when the pH value of the medium ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/06C25D13/20C25D13/02C23C18/12C23C28/04A61L31/02A61L31/14A61L31/08
CPCA61L31/022A61L31/024A61L31/084A61L31/088A61L31/14A61L2400/12A61L2400/18C22F1/002C22F1/06C23C18/1216C23C18/1254C23C18/127C23C28/042C25D13/02C25D13/20
Inventor 文炯张建华刘永奇郭留希杨晋中刘创勋
Owner ZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT