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A method for preparing ti/tio2 or tin biocompatible film layer on the surface of magnesium-based composite material

A composite material and film technology, which is applied in metal material coating process, coating, ion implantation plating, etc., can solve the problem that the biocompatibility of the film layer has not been significantly improved, and achieve the reduction of hydrogen precipitation and process The process is short and the effect of delaying the chemical reaction

Active Publication Date: 2015-08-05
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these single-layer films have improved the corrosion resistance of the magnesium surface, the biocompatibility of the film has not been significantly improved when considered as a biological material.

Method used

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  • A method for preparing ti/tio2 or tin biocompatible film layer on the surface of magnesium-based composite material
  • A method for preparing ti/tio2 or tin biocompatible film layer on the surface of magnesium-based composite material
  • A method for preparing ti/tio2 or tin biocompatible film layer on the surface of magnesium-based composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The composite material with hydroxyapatite particles added to the magnesium matrix is ​​used as the matrix material. Firstly, the magnesium matrix material is polished on sandpaper to remove the surface oxide film layer, and then it is cleaned in absolute alcohol, and then ultrasonic cleaning equipment is added. Hydroalcohol for further cleaning to ensure that the surface of the magnesium matrix material is clean and free of oxides. In the vacuum multi-arc ion plating equipment, the magnesium / hydroxyapatite composite material is coated on the surface. Vacuum the vacuum multi-arc ion coating machine to 6.0×10 -3 Pa vacuum, then heated to 200°C, filled with argon, the partial pressure of argon controlled at 0.5Pa, connected to the bias power of the magnesium substrate, with a bias value of 100V, and initially bombarded the magnesium substrate for 2 minutes. Vacuum again to 3×10 -3 The vacuum degree above Pa, the bias voltage of the magnesium / hydroxyapatite composite mat...

Embodiment 2

[0037] The composite material with tricalcium phosphate particles added to the magnesium matrix is ​​used as the matrix material. First, the magnesium-based composite material is polished on sandpaper to remove the surface oxide film layer, and then cleaned in anhydrous alcohol, and then ultrasonic cleaning equipment is added. Hydroalcohol for further cleaning to ensure that the surface of the magnesium matrix material is clean and free of oxides. Surface coating of magnesium / tricalcium phosphate composites in vacuum multi-arc ion plating equipment. Vacuum the vacuum multi-arc ion coating machine to 6.0×10 -3 The vacuum degree is above Pa, then heated to 200°C, filled with argon, the partial pressure of argon is controlled at 0.5Pa, the bias power of the magnesium substrate is connected, the bias value is 250V, and the magnesium substrate is initially bombarded for 3 minutes; Fill the vacuum chamber with nitrogen, keep the partial pressure of nitrogen at 1Pa, occupying 45% of...

Embodiment 3

[0039] The composite material with hydroxyapatite particles added to the magnesium matrix is ​​used as the matrix material. Firstly, the magnesium matrix material is polished on sandpaper to remove the surface oxide film layer, and then it is cleaned in absolute alcohol, and then ultrasonic cleaning equipment is added. Further cleaning with hydroalcohol ensures that the surface of the magnesium / hydroxyapatite composite is clean and oxide-free. Surface coating is carried out in vacuum multi-arc ion plating equipment. Vacuum the vacuum multi-arc ion coating machine to 6.0×10 -3 The vacuum degree is above Pa, then heated to 210°C, filled with argon, the partial pressure of argon is controlled at 0.4Pa, and the bias power of the magnesium / hydroxyapatite composite material is connected, and the bias value is 250V. Carry out initial bombardment for 3 minutes; vacuum again to 3×10 -3 The vacuum degree above Pa, the bias voltage of the magnesium / hydroxyapatite composite material is ...

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Abstract

The invention discloses a method for preparing a Ti / TiO2 or TiN biocompatible film on the surface of a magnesium matrix composite. The film has excellent biocompatibility, is tightly combined with the magnesium matrix material and can be used for stopping or delaying the corrosion of the magnesium matrix material in body fluid. If a Ti / TiO2 layer needs to be plated, the vacuum degree is above 3*10<-3> Pa through vacuumization, a pure titanium target is ignited for arc striking and discharging, and the deposition time is 2-10 minutes. If a TiN layer needs to be plated, nitrogen is introduced into a vacuum chamber, the arc striking current is controlled to be 50-100A, and the deposition time is 8-12 minutes. When the Ti / TiO2 or TiN film obtained by using the method is on service under a living body environment, the purpose of slowly degrading the magnesium matrix material can be reached, a chemical reaction between the magnesium matrix and the body fluid environment is effectively delayed, and the living body can discharge degradation products within a sustainable range; and the Ti / TiO2 or TiN film is a surface film which can be applied to magnesium matrix implant biomaterials and has biocompatibility.

Description

technical field [0001] The invention relates to a Ti / TiO obtained by vacuum physical vapor deposition technology on the surface of magnesium / hydroxyapatite or magnesium / tricalcium phosphate composite material 2 Or the method of TiN protective film layer, which has good biocompatibility. Background technique [0002] Biocompatibility is the key to evaluating the service behavior of various biomedical materials in the human environment. The medical materials implanted in the body should meet the biological safety requirements, adapt to the physiological environment requirements of human tissues and organs, and realize the protection of diseased tissues. and organ repair or reconstruction. Magnesium-based composites are medical metal implant materials with good biocompatibility, and have the advantages of comprehensive physical, mechanical and chemical properties suitable for bone growth. Compared with existing medical metal materials such as titanium, stainless steel, and cob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/32C23C14/16C23C14/06C23C14/58
Inventor 余琨陈良建戴翌龙颜阳乔雪岩赵俊
Owner CENT SOUTH UNIV
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