Method for directly preparing hydroxyapatite-containing micro-arc oxidation ceramic film

A technology of hydroxyapatite and micro-arc oxidation, which is applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve the problems of poor biocompatibility of ceramic films on the surface of titanium alloys, and promote early growth, The effect of good biocompatibility

Active Publication Date: 2014-07-02
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for directly preparing a micro-arc oxidation ceramic film containing hydroxyapatite to improve the problem of poor biocompatibility of the ceramic film layer on the surface of titanium alloy

Method used

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  • Method for directly preparing hydroxyapatite-containing micro-arc oxidation ceramic film

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Experimental program
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Effect test

Embodiment 1

[0025] A. Pretreatment of titanium alloy samples: the titanium alloy Ti 6 al 4 V is cut into a cylindrical titanium material, and a hole is drilled on the top of the sample; the surface of the titanium alloy is polished until there are no obvious scratches on the surface of the sample, and then degreased with ethanol, 1g / L sodium hydroxide solution, and alkali-washed. Wash with deionized water and dry naturally;

[0026] B. Micro-arc oxidation: Suspend the cylindrical titanium material after the aforementioned treatment in the electrolyte for micro-arc oxidation; the power supply used is a pulse power supply, and the power supply parameters are set as: voltage 450V, duty cycle 30%, frequency It is 900HZ, the number of positive pulses is 1, the number of negative pulses is 1, and the oxidation time is 15min. The electrolyte solution is prepared as follows: calcium acetate 0.15mol / L, disodium EDTA 0.15mol / L, potassium dihydrogen phosphate 0.1 mol / L.

[0027] C. Post-treatment...

Embodiment 2

[0029] A. Pretreatment of titanium alloy samples: the titanium alloy Ti 6 al 4 V is cut into a cylindrical titanium material, and a hole is drilled on the top of the sample; the surface of the titanium alloy is polished until there are no obvious scratches on the surface of the sample, and then degreased with ethanol, 1g / L sodium hydroxide solution, and alkali-washed. Wash with deionized water and dry naturally;

[0030] B. Micro-arc oxidation: Suspend the cylindrical titanium material after the aforementioned treatment in the electrolyte for micro-arc oxidation; the power supply used is a pulse power supply, and the power supply parameters are set as: voltage 475V, duty cycle 40%, frequency It is 900HZ, the number of positive pulses is 1, the number of negative pulses is 1, and the oxidation time is 20min. The electrolyte is prepared as follows: calcium acetate 0.2 mol / L, disodium EDTA 0.15 mol / L, potassium dihydrogen phosphate 0.1 mol / L.

[0031] C. Post-treatment: The sa...

Embodiment 3

[0033] A. Pretreatment of titanium alloy samples: the titanium alloy Ti 6 al 4 V is cut into a cylindrical titanium material, and a hole is drilled on the top of the sample; the surface of the titanium alloy is polished until there are no obvious scratches on the surface of the sample, and then degreased with ethanol, 1g / L sodium hydroxide solution, and alkali-washed. Wash with deionized water and dry naturally;

[0034] B. Micro-arc oxidation: Suspend the cylindrical titanium material after the aforementioned treatment in the electrolyte for micro-arc oxidation; the power supply used is a pulse power supply, and the power supply parameters are set as: voltage 450V, duty cycle 40%, frequency It is 900HZ, the number of positive pulses is 1, the number of negative pulses is 1, and the oxidation time is 20min. The electrolyte is prepared as follows: calcium acetate 0.15 mol / L, disodium EDTA 0.15 mol / L, potassium dihydrogen phosphate 0.1 mol / L.

[0035] C. Post-treatment: The s...

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Abstract

The invention discloses a method for directly preparing a hydroxyapatite-containing micro-arc oxidation ceramic film. The method comprises the following steps: cutting a titanium alloy Ti6A14V into cylindrical titanium materials, perforating above a test sample, grinding the surface of the titanium alloy till the surface of the test sample is free of scratches, removing oil, washing by using alkali and deionized water, and naturally drying for later use; suspending the cylindrical titanium materials prepared in the step A in electrolyte, performing micro-arc oxidation by using a pulse power supply, wherein the power supply voltage is 450-475V and the frequency is 900-1,200Hz; cleaning the test sample which is subjected to micro-arc oxidation by using deionized water, and drying to obtain the hydroxyapatite-containing micro-arc oxidation ceramic film. The method provided by the invention has the advantages of convenience in operation, simple process, energy saving, environmental friendliness, low request on equipment, short preparation period and low cost.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of biomedical implant materials, and in particular relates to a method for directly preparing a micro-arc oxidation ceramic film containing hydroxyapatite. Background technique [0002] Titanium and titanium alloys have light weight, high specific strength, and small elastic modulus (about half of other medical materials), which match the elastic modulus of human hard tissues and have certain biocompatibility. It has good corrosion resistance. After it is implanted into the human body, it has the advantages of good mechanical properties, corrosion resistance and small tissue reaction, which meets the requirements of human biological implant materials. It has been used as bone implants and repairs. one of the main materials. With the development of science and technology, the aging of the population, and the increase in bone trauma caused by industry, transportation, and sports, people's...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26
Inventor 杨钢严继康唐婉霞吴云峰黄思仁倪尔鑫施哲方树铭
Owner KUNMING METALLURGY INST
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