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Method of preparing titanium implant having bioelectricity activity by carrying out water-vapor treatment on tin-bearing microarc oxidation coating

A technology of micro-arc oxidation and titanium implants, which is applied in the direction of coating, surface reaction electrolytic coating, metal material coating technology, etc., can solve the problem of weak biological activity of titanium micro-arc oxidation coating, achieve good biological activity, Simple process and improved biological activity

Active Publication Date: 2017-02-15
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biological activity of titanium micro-arc oxidation coatings prepared by existing methods is weak

Method used

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  • Method of preparing titanium implant having bioelectricity activity by carrying out water-vapor treatment on tin-bearing microarc oxidation coating
  • Method of preparing titanium implant having bioelectricity activity by carrying out water-vapor treatment on tin-bearing microarc oxidation coating
  • Method of preparing titanium implant having bioelectricity activity by carrying out water-vapor treatment on tin-bearing microarc oxidation coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Micro-arc oxidation treatment: Add sodium stannate, sodium hydroxide and sodium β-glycerophosphate into water to obtain a mixed solution, use the mixed solution as the electrolyte, use the titanium sample as the anode, and use the stainless steel tank as the cathode; The electrolyte is added to the stainless steel tank, and the titanium sample is placed in the electrolyte at 0°C for micro-arc oxidation. The micro-arc oxidation uses pulse voltage, the positive voltage is 250V, the negative voltage is 70V, and the pulse frequency of the micro-arc oxidation is 700Hz, the duty ratio of the micro-arc oxidation is 30%, the micro-arc oxidation time is 5min, a micro-porous micro-arc oxidation coating is formed on the surface of the titanium sample, and a tin-containing micro-arc oxidation titanium sample is obtained; wherein, the mixed The concentration of sodium stannate in the solution is 0.01mol / L, the concentration of sodium hydroxide is 0.1mol / L, the concentration of β-s...

Embodiment 2

[0038]1) Micro-arc oxidation treatment: Add sodium stannate, sodium hydroxide and sodium β-glycerophosphate into water to obtain a mixed solution, use the mixed solution as the electrolyte, use the titanium sample as the anode, and use the stainless steel tank as the cathode; The electrolyte is added to the stainless steel tank, and the titanium sample is placed in the electrolyte at 10°C for micro-arc oxidation. The pulse voltage is used for the micro-arc oxidation, the positive voltage is 550V, the negative voltage is 40V, and the pulse frequency of the micro-arc oxidation is 800Hz, the duty ratio of the micro-arc oxidation is 6%, the micro-arc oxidation time is 10min, a micro-porous micro-arc oxidation coating is formed on the surface of the titanium sample, and a tin-containing micro-arc oxidation titanium sample is obtained; wherein, the mixed The concentration of sodium stannate in the solution is 1mol / L, the concentration of sodium hydroxide is 0.6mol / L, the concentratio...

Embodiment 3

[0042] 1) Micro-arc oxidation treatment: Add sodium stannate, sodium hydroxide and sodium β-glycerophosphate into water to obtain a mixed solution, use the mixed solution as the electrolyte, use the titanium sample as the anode, and use the stainless steel tank as the cathode; The electrolyte is added to the stainless steel tank, and the titanium sample is placed in the electrolyte at 40°C for micro-arc oxidation. The micro-arc oxidation uses pulse voltage, the positive voltage is 300V, the negative voltage is 0V, and the pulse frequency of the micro-arc oxidation is 200Hz, the duty cycle of the micro-arc oxidation is 15%, the micro-arc oxidation time is 15min, a micro-porous micro-arc oxidation coating is formed on the surface of the titanium sample, and a tin-containing micro-arc oxidation titanium sample is obtained; wherein, the mixed The concentration of sodium stannate in the solution is 0.08mol / L, the concentration of sodium hydroxide is 0.01mol / L, the concentration of β...

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Abstract

The invention discloses a method of preparing a titanium implant having bioelectricity activity by carrying out water-vapor treatment on a tin-bearing microarc oxidation coating. A titanium sample is placed in a stainless steel tank filled with an electrolytic solution for microarc oxidation; then the titanium sample is placed in a reaction kettle for the water-vapor treatment, tin dioxide in a nano structure grows on the surface of the titanium sample, an electroactivity biological microarc oxidation coating which is in a microscope porous structure is obtained, and tin dioxide grows on the surface of the electroactivity biological microarc oxidation coating. No discontinuous interface exists between the coating and a substrate, bone-like apatite can be formed through rapid induction in a simulated body fluid environment, and the titanium implant has good bioactivity.

Description

technical field [0001] The invention relates to the technical field of metal surface modification, in particular to a method for preparing a bioelectrically active titanium implant by treating a tin-containing micro-arc oxidation coating with water vapor. Background technique [0002] Using micro-arc oxidation technology, an oxide layer can be formed on the surface of Ti and its alloys. At the same time, by adjusting the composition of the electrolyte and controlling the parameters of the electrical process, the composition, structure and structure of the coating can also be adjusted to endow the coating material with different functions. This is the use of plasma chemical and electrochemical reactions involved in the method, and the deposition of colloidal particles. According to the needs in the field of medical titanium implants, it is necessary to carry out bioactive treatment on the titanium surface. At present, in order to solve this problem, methods such as doping c...

Claims

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Application Information

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IPC IPC(8): C25D11/26C23C8/16A61L27/06A61L27/30A61L27/54A61L27/56
CPCA61L27/06A61L27/306A61L27/54A61L27/56C23C8/16C25D11/026C25D11/26A61L2300/412A61L2300/102A61L2420/08
Inventor 周睿憨勇靳国瑞李明
Owner XI AN JIAOTONG UNIV
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