Method for preparing bioactive coating on titanium alloy surface

A bioactive, titanium alloy technology, applied in the direction of surface reaction electrolytic coating, coating, electrolytic coating, etc., can solve the problem that it is not easy to obtain a uniform coating on the workpiece, the bonding strength between the coating and the substrate is low, and HA is easy to decompose, etc. problems, to achieve the effect of easy industrial implementation, good corrosion resistance, and avoid loosening

Inactive Publication Date: 2009-10-21
INNER MONGOLIA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of HA by plasma spraying has been used clinically, but because plasma spraying is carried out under high temperature conditions, HA is easy to decompose, and undesired phases appear, and it is not easy to obtain a uniform coating for workpieces with complex shapes
At the same time, all traditional surface treatment methods have the problem of low bonding strength between the coating and the substrate!
[0005] There is no interface between the coating and the substrate prepared by the micro-arc oxidation method, and the bonding strength is high, but the biological activity is slightly poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: A method for preparing a bioactive coating on the surface of a titanium alloy includes the following steps: using the titanium alloy as a substrate, placing the titanium alloy in a micro-arc oxidation electrolyte successively for micro-arc oxidation, and micro-arc oxidation The treated titanium alloy is subjected to alkali heat treatment to obtain a titanium alloy with a bioactive coating on the surface;

[0022] in:

[0023] (1) Micro-arc oxidation process:

[0024] (a) Cut the titanium alloy into small samples with a size of 10mm×10mm×3mm, drill a Φ1.5mm round hole at a position 1.5mm away from the side of the sample to hang the sample, and then place the sample on the Grinding (200#-1000#) on metallographic sandpaper, cleaning with tap water, ultrasonic cleaning with acetone (10min), ultrasonic cleaning with alcohol (10min), ultrasonic cleaning with deionized water (10min), and drying at 25°C (5min).

[0025] (b) Use a solution containing 5g / L calcium...

Embodiment 2

[0029] Embodiment 2: A method for preparing a bioactive coating on the surface of a titanium alloy includes the following steps: using the titanium alloy as a substrate, respectively putting the titanium alloy into a micro-arc oxidation electrolyte for micro-arc oxidation, and micro-arc oxidation The treated titanium alloy is subjected to alkali heat treatment to obtain a titanium alloy with a bioactive coating on the surface;

[0030] in:

[0031] (1) Micro-arc oxidation process:

[0032] (a) Cut the titanium alloy into small samples with a size of 10mm×10mm×3mm, drill a Φ1.5mm round hole at a position 1.5mm away from the side of the sample to hang the sample, and then place the sample on the Grinding (200#-1000#) on metallographic sandpaper, cleaning with tap water, ultrasonic cleaning with acetone (10min), ultrasonic cleaning with alcohol (10min), ultrasonic cleaning with deionized water (10min), and drying at 25°C (5min).

[0033] (b) Use a solution containing 15g / L calc...

Embodiment 3

[0037] Example 3: A method for preparing a bioactive coating on the surface of a titanium alloy includes the following steps: using the titanium alloy as a substrate, placing the titanium alloy in a micro-arc oxidation electrolyte in turn for micro-arc oxidation, and micro-arc oxidation The treated titanium alloy is subjected to alkali heat treatment to obtain a titanium alloy with a bioactive coating on the surface;

[0038] in:

[0039] (1) Micro-arc oxidation process:

[0040] (a) Cut the titanium alloy into small samples with a size of 10mm×10mm×3mm, drill a Φ1.5mm round hole at a position 1.5mm away from the side of the sample to hang the sample, and then place the sample on the Grinding (200#-1000#) on metallographic sandpaper, cleaning with tap water, ultrasonic cleaning with acetone (10min), ultrasonic cleaning with alcohol (10min), ultrasonic cleaning with deionized water (10min), and drying at 25°C (5min).

[0041] (b) Use a solution containing 100g / L of calcium ac...

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PUM

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Abstract

The invention discloses a method for preparing a bioactive coating on a titanium alloy surface, which comprises the following steps of: taking the titanium alloy as a matrix, and then putting titanium alloy into micro-arc oxidation electrolyte for micro-arc oxidation, later implementing alkali heat treatment on the titanium alloy after micro-arc oxidation treatment, and finally obtaining the titanium alloy with the bioactive coating attached on the surface. The method has the advantages that by learning from the strong points of others and making up self-deficiencies, and then directly preparing a film with high matrix combination strength on the titanium alloy surface by micro-arc oxidation, and later conducting alkali heat treatment for improving the biological activity of the micro-arc oxidation film, the coating better solves the problems of combination strength, wear resistance, decay resistance, biological activity and the like.

Description

Technical field: [0001] The invention belongs to a method for preparing a bioactive coating on the surface of a titanium alloy, and in particular relates to a method for preparing a bioactive coating rich in Ca and P on the surface of a titanium alloy by using micro-arc oxidation technology, and further improving the micro-arc oxidation by an alkali heat treatment process. The bioactivity of the film, the prepared coating can rapidly grow the hydroxyapatite coating in the simulated body fluid. Background technique: [0002] Titanium and titanium alloys are currently the most attractive metals due to their excellent mechanical properties such as low density and low elastic modulus, excellent biocompatibility, high corrosion resistance, and good integration with organisms. biomaterials. However, due to the fact that the composition of titanium and its alloys is completely different from that of human tissues, when they are used as hard tissue implants, they are mechanically i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26
Inventor 杨森王明润王三军王晓龙孙彩玲
Owner INNER MONGOLIA UNIV OF TECH
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