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Preparation method of tin dioxide electroactive biological ceramic coating composited on surface of micro-arc oxidation titanium

A technology of tin dioxide and surface compounding, applied in the direction of surface reaction electrolytic coating, coating, electrolytic coating, etc., can solve the problem of weak biological activity of titanium and its alloy surface coating, achieve good biological activity, simple process, The effect of enhancing biological activity

Active Publication Date: 2017-05-10
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The biological activity of titanium and its alloy surface coatings prepared by existing methods is relatively weak

Method used

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  • Preparation method of tin dioxide electroactive biological ceramic coating composited on surface of micro-arc oxidation titanium
  • Preparation method of tin dioxide electroactive biological ceramic coating composited on surface of micro-arc oxidation titanium
  • Preparation method of tin dioxide electroactive biological ceramic coating composited on surface of micro-arc oxidation titanium

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Micro-arc oxidation treatment: NaOH and β-C 3 h 7 Na 2 o 6 P is added to water to form an electrolyte; the concentration of NaOH in the electrolyte is 1g / L, β-C 3 h 7 Na 2 o 6 The concentration of P is 25g / L; the titanium sample is used as the anode, the electrolyte is added to the stainless steel tank, and the stainless steel tank is used as the cathode, and the titanium sample is placed in the electrolyte at 30°C for micro-arc oxidation. The arc oxidation parameters are as follows: the micro-arc oxidation adopts pulse voltage, the positive voltage is 250V, the negative voltage is 80V, the micro-arc oxidation pulse frequency is 500Hz, the duty cycle of the micro-arc oxidation is 15%, and the micro-arc oxidation time is 10min. Arc oxidation titanium sample; wherein, the titanium sample is TA2 industrial pure titanium.

[0031] 2) hydrothermal treatment: adding tin salt, sodium hydroxide, water and alcohol into water to form a mixed solution, the concentration ...

Embodiment 2

[0035] 1) Micro-arc oxidation treatment: NaOH and β-C 3 h 7 Na 2 o 6P is added to water to form an electrolyte; the concentration of NaOH in the electrolyte is 10g / L, β-C 3 h 7 Na 2 o 6 The concentration of P is 30g / L; the titanium sample is used as the anode, the electrolyte is added to the stainless steel tank, and the stainless steel tank is used as the cathode, and the titanium sample is placed in the electrolyte at 20°C for micro-arc oxidation. Arc oxidation parameters are as follows: micro-arc oxidation adopts pulse voltage, positive voltage is 500V, negative voltage is 100V, micro-arc oxidation pulse frequency is 200Hz, duty cycle of micro-arc oxidation is 6%, micro-arc oxidation time is 8min, and micro-arc oxidation is obtained. Arc oxidation titanium sample; wherein, the titanium sample is TA3 industrial pure titanium.

[0036] 2) hydrothermal treatment: adding tin salt, sodium hydroxide, water and alcohol into water to form a mixed solution, the concentration ...

Embodiment 3

[0039] 1) Micro-arc oxidation treatment: NaOH and β-C 3 h 7 Na 2 o 6 P is added to water to form an electrolyte; the concentration of NaOH in the electrolyte is 15g / L, β-C 3 h 7 Na 2 o 6 The concentration of P is 15g / L; the titanium sample is used as the anode, the electrolyte is added to the stainless steel tank, and the stainless steel tank is used as the cathode, and the titanium sample is placed in the electrolyte at 10°C for micro-arc oxidation. Arc oxidation parameters are as follows: micro-arc oxidation adopts pulse voltage, positive voltage is 550V, negative voltage is 30V, micro-arc oxidation pulse frequency is 800Hz, duty cycle of micro-arc oxidation is 30%, micro-arc oxidation time is 5min, and micro-arc oxidation is obtained. Arc oxidation titanium sample; wherein, the titanium sample is TA4 industrial pure titanium.

[0040] 2) Hydrothermal treatment: adding tin salt, sodium hydroxide, water and alcohol into water to form a mixed solution, the concentration...

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Abstract

The invention discloses a preparation method of a tin dioxide electroactive biological ceramic coating composited on the surface of micro-arc oxidation titanium and relates to the technical field of metal surface modification. The method comprises the steps that a titanium sheet is put into a stainless steel tank containing an electrolyte for micro-arc oxidation; and a prepared micro-arc oxidation titanium sample is put into a reaction still so that nano-particulate tin dioxide can grow hydrothermally. The obtained electroactive biological ceramic coating has the structural and performance characteristics that the coating is a double-layer composite coating; an inner layer is composed of titanium dioxide and is of a microcosmic porous structure; and an outer layer is composed of tin dioxide and is in the nano-particulate state. No uncontinuous interface exists between the coating structure and a base body; bone-like apatite can be induced to be formed rapidly in a simulated body fluid environment; and good biological activity is achieved.

Description

technical field [0001] The invention relates to the technical field of metal surface modification, in particular to a method for preparing a composite tin dioxide electroactive bioceramic coating on the surface of micro-arc oxidized titanium. Background technique [0002] Titanium and titanium alloys are widely used medical implant materials, but titanium and titanium alloys are biologically inert in application and do not have osteoinductive ability. Micro-arc oxidation technology is a common bioactive modification method of titanium surface, which can generate titanium dioxide ceramic coating with microporous structure on the surface of titanium and titanium alloy, but the coating prepared by this method has weak biological activity. In the process of bone repair, the negative charge on the surface of the implant can promote the deposition of apatite and the expression of osteoblasts, which is beneficial to the integration of bone tissue and the implant. By controlling th...

Claims

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Application Information

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IPC IPC(8): C25D11/26C23C18/12C23C28/04A61L27/06A61L27/30
CPCA61L27/06A61L27/306C23C18/1216C23C28/042C25D11/024C25D11/26A61L2420/08
Inventor 周睿憨勇靳国瑞李明
Owner XI AN JIAOTONG UNIV
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