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Method for preparing wear-resisting biological ceramic film on surface of titanium alloy through micro-arc oxidation

A bioceramic membrane and micro-arc oxidation technology, which is applied in the field of metallurgy, can solve the problems of little understanding of the friction layer and achieve the effects of inhibiting the possibility of tissue infection, inhibiting proliferation, and high controllability

Inactive Publication Date: 2015-10-28
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is well known that reactive proteins play a key role in metal friction layers in MOM design, but the more material basis of friction layers is still poorly understood

Method used

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  • Method for preparing wear-resisting biological ceramic film on surface of titanium alloy through micro-arc oxidation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A. Pretreatment: Cut the titanium alloy TC4 into a cylindrical titanium material, punch a hole above the sample, and polish the surface of the titanium alloy until there are no obvious scratches on the surface of the sample, and finally wash it with deionized water and dry it naturally;

[0027] B. Micro-arc oxidation: The pretreated titanium alloy sample is suspended in the electrolyte as the anode, and the stainless steel electrolytic cell is used as the cathode, and the micro-arc oxidation is carried out in stages. The electrolyte formula is: calcium acetate: 176.18g, EDTA-2Na: 279.18g, potassium dihydrogen phosphate: 68.045g, micron graphite powder: 25g, distilled water: 5L. The power supply parameters are: the forward current is set to 10A / dm 2 , the negative current is 7A / dm 2 , the positive and negative duty cycle is 25%, the frequency is 450Hz, the number of positive and negative pulses is 1, and the oxidation time is 5min. The temperature of the electrolyte i...

Embodiment 2

[0031] A. Pretreatment: Cut the titanium alloy TC4 into a cylindrical titanium material, punch a hole above the sample, and polish the surface of the titanium alloy until there are no obvious scratches on the surface of the sample, and finally wash it with deionized water and dry it naturally;

[0032] B. Micro-arc oxidation: The pretreated titanium alloy sample is suspended in the electrolyte as the anode, and the stainless steel electrolytic cell is used as the cathode, and the micro-arc oxidation is carried out in stages. The electrolyte formula is: calcium acetate: 176.18g, EDTA-2Na: 279.18g, potassium dihydrogen phosphate: 68.045g, micron graphite powder: 50g, distilled water: 5L. The power supply parameters are: the forward current is set to 15A / dm 2 , the negative current is 7A / dm 2 , The positive and negative duty cycle is 40%, the frequency is 600Hz, the number of positive and negative pulses is 1, and the oxidation time is 10min. The temperature of the electrolyte ...

Embodiment 3

[0036] A. Pretreatment: Cut the titanium alloy TC4 into a cylindrical titanium material, punch a hole above the sample, and polish the surface of the titanium alloy until there are no obvious scratches on the surface of the sample, and finally wash it with deionized water and dry it naturally;

[0037] B. Micro-arc oxidation: The pretreated titanium alloy sample is suspended in the electrolyte as the anode, and the stainless steel electrolytic cell is used as the cathode, and the micro-arc oxidation is carried out in stages. The electrolyte formula is: calcium acetate: 176.18g, EDTA-2Na: 279.18g, potassium dihydrogen phosphate: 68.045g, micron graphite powder: 100g, distilled water: 5L. The power supply parameters are: the forward current is set to 25A / dm 2 , the negative current is 10A / dm 2 , The positive and negative duty cycle is 40%, the frequency is 900Hz, the number of positive and negative pulses is 1, and the oxidation time is 20min. The temperature of the electrolyt...

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Abstract

The invention discloses a method for preparing wear-resisting biological ceramic film on surface of titanium alloy through micro-arc oxidation. The method comprises the steps of pretreatment, staged composite micro-arc oxidation and aftertreatment. According to the method for preparing wear-resisting biological ceramic film on the surface of the titanium alloy through the micro-arc oxidation, micro-size graphite particles are added in a lime acetate-phosphate base electrolyte system, the biological ceramic film with good wear-resisting performance is prepared, the electrolyte is prepared through lime acetate, EDTA-2Na, monopotassium phosphate and micro-size graphite powder, the concentration ratios of the lime acetate, the EDTA-2Na, the monopotassium phosphate and the micro-size graphite powder are 3.5:5.6:1.4:1 to 1.8:2.8:0.7:1. The method for preparing wear-resisting biological ceramic film on the surface of the titanium alloy through the micro-arc oxidation has the advantages that the wear-resisting performance of the micro-oxidation film is improved greatly, and the service life of an implant in a biological tissue can be improved effectively.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method for preparing a wear-resistant bioceramic film layer by micro-arc oxidation on the surface of a titanium alloy. Background technique [0002] With the continuous development of modern surgical techniques and prosthesis design, hip arthroplasty (HA) has become the most effective method for the treatment of end-stage hip diseases. Compared with the traditional metal-on-polyethylene HA prosthesis, metal-on-metal prosthesis (Metal-on-metal, MOM) has attracted the attention of many joint surgeons due to its advantages of low wear and low dislocation. It is well known that reactive proteins play a key role in metal friction layers in MOM design, but the more material basis of friction layers is still poorly understood. Therefore, it is very necessary to develop a prosthetic material that can solve the above-mentioned technical problems. Contents of the invent...

Claims

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Application Information

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IPC IPC(8): C25D11/26C25D15/00
Inventor 杨钢严继康倪尔鑫吴云峰孙彦华
Owner KUNMING METALLURGY INST
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