Surface-modified magnesium alloy material with good corrosion resistance and biocompatibility, preparation method and application thereof

A biocompatibility and surface modification technology, applied in metal material coating process and other directions, can solve the problems of fast degradation rate of magnesium alloys and insufficient surface cytocompatibility, achieve good cytocompatibility, and is conducive to Adhesion and corrosion inhibition effect

Active Publication Date: 2019-03-19
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the degradation rate of magnesium alloy is too fast and the surface cell compatibility is not good enough, the present invention provides a surface modified magnesium alloy material with improved corrosion resistance and cell compatibility of magnesium alloy and its preparation method and application

Method used

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  • Surface-modified magnesium alloy material with good corrosion resistance and biocompatibility, preparation method and application thereof
  • Surface-modified magnesium alloy material with good corrosion resistance and biocompatibility, preparation method and application thereof
  • Surface-modified magnesium alloy material with good corrosion resistance and biocompatibility, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Clean the JDBM magnesium alloy sheet with a thickness of 1mm and a length and width of 10mm with alcohol, deionized water and ultrasonic cleaning successively, each time for 15 minutes. The pH value in 50 ml of ultrapure water was adjusted to 10 with 1 mol / L sodium hydroxide, and the solution was used as a hydrothermal medium. The degree of filling of the reactor was 35%. The hydrothermal temperature is 120°C, and the time is 8h. After the hydrothermal treatment, the samples were scrubbed with copious amounts of deionized water.

[0044] Referring to the magnesium alloy scanning electron microscope picture ( figure 1 (a)) and cross-sectional pictures ( figure 1 (d)), it can be seen that the treated surface is a sheet-like nanostructure, the thickness of the nanosheets is about 20 nm, and the distribution is uniform, and the thickness of the coating is about 1.8 μm. figure 2 HT1# is the XRD spectrogram of the material surface obtained by the modification treatment i...

Embodiment 2

[0046] Clean the JDBM magnesium alloy sheet with a thickness of 1mm and a length and width of 10mm with alcohol, deionized water and ultrasonic cleaning successively, each time for 15 minutes. The pH value in 50 milliliters of ultrapure water was adjusted to 12 with 1 mol / L sodium hydroxide, and the filling degree of the reaction kettle was 35%. Carry out hydrothermal treatment afterwards, its specific process parameter is as described in embodiment 1. .

[0047] Refer to the scanning electron microscope pictures ( figure 1 (b)) and cross-sectional pictures ( figure 1 (e)), it can be seen from the figure that the treated surface is a sheet-like nanostructure, the thickness of the nanosheets is about 20nm, and the distribution is uniform, and the thickness of the coating is about 2.3μm. figure 2 HT1# is the XRD spectrum of the surface of the material obtained through the modification in Example 2. After the modification in this Example, the main crystal phase composition on...

Embodiment 3

[0049] Clean the JDBM magnesium alloy sheet with a thickness of 1mm and a length and width of 10mm with alcohol, deionized water and ultrasonic cleaning successively, each time for 15 minutes. The pH value of the 0.02 mol / L aluminum nitrate in 50 ml was adjusted to 12 with 10 mol / L sodium hydroxide. The degree of filling of the reactor was 35%. Carry out hydrothermal treatment afterwards, its specific process parameter is as described in embodiment 1.

[0050] Referring to the magnesium alloy scanning electron microscope picture ( figure 1 (c)) and cross-sectional pictures ( figure 1 (f)), it can be seen from the figure that the treated surface is a sheet-like nanostructure, the thickness of the nanosheets is about 20nm, and the distribution is uniform, and the thickness of the coating is about 2μm. figure 2 Among them, JDBM and HT3# are the XRD spectrum patterns of the material surface obtained without any treatment and the modified treatment of the present embodiment 3 r...

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Abstract

The invention relates to a surface modified magnesium alloy material with good corrosion resistance and biocompatibility and a preparation and application of the surface modified magnesium alloy material. The surface modified magnesium alloy material comprises magnesium alloy and a modified coating, wherein the modified coating grows on the surface of the magnesium alloy in situ, is of a nanosheet structure and contains magnesium hydroxide and magnalium layered double hydroxide. The prepared surface modified magnesium alloy material can lower the concentration of chloride ions near the alloy and protect the magnesium alloy. In addition, the modified magnesium alloy surface is more beneficial to cell adhesion, spreading and proliferation, and has good cytocompatibility.

Description

technical field [0001] The invention relates to a surface modified magnesium alloy material and a surface modification method thereof, in particular to a method for modifying the surface of a magnesium alloy by hydrothermal treatment, and belongs to the technical field of surface modification of metal materials. Background technique [0002] Magnesium alloy has good mechanical properties, elastic modulus very close to that of bone tissue, and degradation products can be excreted with the metabolism of the human body. It is an ideal hard tissue replacement material and cardiovascular scaffold material. Magnesium alloys are considered as next-generation medical biomaterials. Most of the current medical materials, such as titanium alloys, nickel-titanium alloys and other medical materials are non-degradable materials. A second operation is required to remove the implant, which will bring heavy mental and financial pressure to the patient. Therefore, the development of new bio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/60
CPCC23C22/60
Inventor 刘宣勇彭峰
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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