Magnesium base degradable implant material and preparation method thereof

A technology for implants and substrates, applied in prostheses, coatings, medical science, etc., can solve the problems of lack of human implant materials, and achieve the effect of high microhardness and good corrosion resistance

Inactive Publication Date: 2009-10-21
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most researches on the surface micro-arc oxidation of magnesium alloys focus on AZ and AM series magnesium alloys, while there are very few s

Method used

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  • Magnesium base degradable implant material and preparation method thereof
  • Magnesium base degradable implant material and preparation method thereof
  • Magnesium base degradable implant material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of magnesium-based degradable implant material (1#ZK60):

[0033] 1) The base material is ZK60, cut into 8×10×12mm 3 Cuboid small pieces are polished on sandpaper of different thicknesses, the last sandpaper is 1000#, and then ultrasonically cleaned in acetone and dried;

[0034] 2) Weigh sodium silicate, potassium hydroxide, potassium fluoride, soluble phosphate, triethanolamine and dissolve them in pure water to prepare an electrolyte. The main components of the electrolyte are: Na 2 SiO 3 15g / L, KOH 5g / L, KF 3g / L, (NaPO 3 ) 6 5g / L, the sample is connected to the positive pole of the power supply, suspended in the electrolyte, and the electrolytic cell is connected to the negative pole of the power supply for micro-arc oxidation treatment under constant current conditions. The constant current condition is: current density 9.0A / dm 2 , Oxidation time 30min, frequency 600Hz, duty cycle 10%;

[0035] 3) Wash the sample obtained in step 2) with deionize...

Embodiment 2

[0037] Preparation of magnesium-based degradable implant material (2#ZK60):

[0038] 1) The base material is ZK60, cut into 8×10×12mm 3 Cuboid small pieces are polished on sandpaper of different thicknesses, the last sandpaper is 1000#, and then ultrasonically cleaned in acetone and dried;

[0039] 2) Weigh sodium silicate, potassium hydroxide, potassium fluoride, soluble phosphate, triethanolamine and dissolve them in pure water to prepare an electrolyte. The main components of the electrolyte are: Na 2 SiO 3 15g / L, KOH 5g / L, KF 3g / L, (NaPO 3 ) 6 5g / L, the sample is connected to the positive pole of the power supply, suspended in the electrolyte, and the electrolytic cell is connected to the negative pole of the power supply for micro-arc oxidation treatment under constant current conditions. The constant current condition is: current density 3.5A / dm 2, Oxidation time 30min, frequency 600Hz, duty cycle 10%;

[0040] 3) Wash the sample obtained in step 2) with deionized...

Embodiment 3

[0042] Preparation of magnesium-based degradable implant material (1#ZK61):

[0043] 1) The base material is ZK61, cut into 8×10×12mm 3 Cuboid small pieces are polished on sandpaper of different thicknesses, the last sandpaper is 1000#, and then ultrasonically cleaned in acetone and dried;

[0044] 2) Weigh sodium silicate, potassium hydroxide, potassium fluoride, soluble phosphate, triethanolamine and dissolve them in pure water to prepare an electrolyte. The main components of the electrolyte are: Na 2 SiO 3 15g / L, KOH 5g / L, KF 3g / L, (NaPO 3 ) 6 5g / L, the sample is connected to the positive pole of the power supply, suspended in the electrolyte, and the electrolytic cell is connected to the negative pole of the power supply for micro-arc oxidation treatment under constant current conditions. The constant current condition is: current density 3.5A / dm 2 , Oxidation time 30min, frequency 600Hz, duty cycle 10%;

[0045] 3) Wash the sample obtained in step 2) with deionize...

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Abstract

The invention discloses a magnesium base degradable implant material, belonging to the technical field of biological materials. The implant material is composed of Mg-Zn-Zr alloy matrix and micro-arc oxidation coating; the micro-arc oxidation coating is formed by micro-arc oxidation treatment by electrolyte formed by solving the sodium silicate, potassium hydroxide, potassium fluoride, soluble phosphate and trolamine in pure water; each liter of electrolyte contains 12-18g of sodium silicate, 3-8g of potassium hydroxide, 2-7g of potassium fluoride, 5-20g of soluble phosphate and 5-10ml of trolamine. The implant material has not only high micro hardness but also excellent decay resistance; and after dipping in simulated body fluid, the surface has phosphorite deposition, which shows that the material has certain biological activity.

Description

technical field [0001] The invention relates to a biological implant material, in particular to a magnesium-based degradable implant material and a preparation method thereof, belonging to the technical field of biological materials. Background technique [0002] Magnesium and magnesium alloys have many superior physical and mechanical properties, such as low density, high specific strength and specific stiffness, high specific vibration strength, bending toughness and ease of processing, as well as good casting and welding properties, high Features such as shielding electromagnetic interference and damping characteristics. Based on these superior properties, magnesium and magnesium alloys are used in many fields. Magnesium and magnesium alloys are also considered to be a promising biodegradable biomaterial in the medical field. Compared with other traditional metal medical materials, magnesium and magnesium alloys have some obvious advantages: (1) Magnesium is stored in th...

Claims

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Application Information

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IPC IPC(8): A61L27/32A61L27/04A61L27/54C25D11/30
Inventor 陈传忠王慧王佃刚
Owner SHANDONG UNIV
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