Pure-titanium metal surface micro-arc oxidation treatment electrolyte and antimicrobial bioactive coating preparation method thereof

A micro-arc oxidation, metal surface technology, applied in surface reaction electrolytic coatings, electrolytic coatings, coatings, etc., can solve the problems of insufficient bonding strength between ceramic coatings and substrates, poor biological properties, etc., to eliminate discontinuity, improve Corrosion resistance, the effect of reducing the difference

Inactive Publication Date: 2011-08-10
JIAMUSI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention starts with the composition of the electrolyte system of micro-arc oxidation, and improves the morphology, element composition, crystal phase structure and corrosion resistance of the micro-arc oxidation coating by adjusting the electrolyte and experimental electrical parameters, and finds a practical, stable, Mature micro-arc oxidation method to generate TiO with high binding strength and excellent biological functionality 2 / HA-ZnO composite coating, in order to overcome the disadvantages of insufficient bonding strength and poor biological performance of the ceramic coating prepared in the past, to achieve the purpose of facilitating the attachment and formation of bone tissue, and try to finally apply it in clinical practice

Method used

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Embodiment approach 1

[0009] Concrete embodiment one: the operating steps of this embodiment are: a. with calcium acetate (Ca(CH 3 COO) 2 ) and Na 3 PO 4 Synthesize calcium-phosphorus salt sol A as the reaction raw material, dissolve calcium acetate and sodium phosphate in deionized water according to the ratio of phosphorus ion concentration to 0.1M and Ca / P to (0.2-1.0): 1, and pour the sodium phosphate solution slowly Sol A was prepared in calcium acetate solution. Ammonia water was used to adjust the pH value to 8-11, mixed and stirred, and sol A was synthesized at room temperature; b. Sol B formed by the reaction of ammonium citrate, zinc acetate and ammonia water was used as the precursor of zinc oxide. Prepare a 1.5M zinc acetate solution, add appropriate amount of triammonium citrate and absolute ethanol so that the molar ratio of zinc acetate to triammonium citrate is 2:1, and the volume ratio of ethanol to water is 1:1. Add ammonia solution dropwise until Zn(OH) 2 The precipitation d...

Embodiment approach 2

[0011] The operating steps of the present embodiment are: a. with calcium acetate (Ca(CH 3 COO) 2 ) and Na 3 PO 4 Calcium phosphate salt sol A was synthesized as the reaction raw material. Calcium acetate and sodium phosphate were dissolved in deionized water respectively according to the ratio of phosphorus ion concentration of 0.1M and Ca / P of 1.0, and the sodium phosphate solution was slowly poured into the calcium acetate solution for preparation. into sol A. Adjust the pH value to 10 with ammonia water, mix and stir, and synthesize sol A at room temperature; b. Triammonium citrate, sol B formed by the reaction of zinc acetate and ammonia water is used as the precursor of zinc oxide. Prepare a 1.5M zinc acetate solution, add appropriate amount of triammonium citrate and absolute ethanol so that the molar ratio of zinc acetate to triammonium citrate is 2:1, and the volume ratio of ethanol to water is 1:1. Add ammonia solution dropwise until Zn(OH) 2 The precipitation d...

Embodiment approach 3

[0013] The operating steps of the present embodiment are: a. with calcium acetate (Ca(CH 3 COO) 2 ) and Na 3 PO 4 Calcium-phosphorus salt sol A was synthesized as the reaction raw material. Calcium acetate and sodium phosphate were dissolved in deionized water respectively according to the proportion of phosphorus ion concentration of 0.1M and Ca / P of 0.5, and the sodium phosphate solution was slowly poured into the calcium acetate solution to prepare into sol A. Adjust the pH value with ammonia water to 9.5, mix and stir, and synthesize Sol A at room temperature; b. Sol B formed by the reaction of triammonium citrate, zinc acetate and ammonia water is used as the precursor of zinc oxide. Prepare a 1.5M zinc acetate solution, add appropriate amount of triammonium citrate and absolute ethanol so that the molar ratio of zinc acetate to triammonium citrate is 2:1, and the volume ratio of ethanol to water is 1:1. Add ammonia solution dropwise until Zn(OH) 2 The precipitation ...

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Abstract

The invention discloses pure-titanium metal surface micro-arc oxidation treatment electrolyte and an antimicrobial bioactive coating preparation method thereof, belongs to a medical titanium metal surface modification technology, and aims to provide a micro-arc oxidation treatment electrolyte which can remarkably improve pure-titanium metal surface bioactivity and coating bonding strength and a coating preparation method thereof. The electrolyte comprises a compound system including the components of calcium acetate, sodium phosphate and a zinc oxide precursor, wherein the phosphorous ion concentration is 0.5 to 1.0 M, the molar ratio of Ca to P is 0.2 to 1.0, and the designed Zn<2+> concentration accounts for 10 to 20 percent of the total concentration. A biological composite coating is directly generated on the surface of a titanium metal surface in-situ by adopting the electrolyte and a micro-arc oxidation technology. The coating has high bonding strength with a substrate, dense inner layer, coarse and porous outer layer, high bioactivity and high antibacterial property; moreover, the used raw materials are easy to obtain; the process is simple and easy to operate; and the electrolyte has stability, reusability, and low production cost and is suitable for industrial production.

Description

Technical field: [0001] The invention relates to a pure titanium metal surface modification technology, in particular to a uniform sol electrolyte and a method for preparing an antibacterial bioactive composite coating by micro-arc oxidation treatment on the surface of pure titanium metal. Background technique: [0002] Pure titanium metal has low density and high specific strength; it has excellent biocompatibility and will not have any adverse reactions with the human body; among the metal materials used for human hard tissue repair, the elastic modulus is closest to that of human hard tissue, and can Reduce the mechanical incompatibility between the implant and bone tissue; the thermal conductivity is only 1 / 17 of that of gold alloy, which can protect the dental pulp from cold and heat stimulation; under the action of alternating load, it has high fatigue strength; good machinability. In view of the above advantages, titanium metal has become the preferred medical metal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26A61L27/32A61L27/30A61L27/06
Inventor 孟祥才王静吕奎龙李星逸
Owner JIAMUSI UNIVERSITY
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