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Preparation method for bioactive ceramic membrane on surface of tantalum metal

A bioactive ceramic and metal surface technology, applied in surface reaction electrolytic coatings, electrolytic coatings, coatings, etc., can solve the problem of poor metal bioactivity and osteoinductive ability, low bonding strength between film and matrix, and inability to generate bone bonds In order to improve biocompatibility and biological activity, improve biocompatibility, and promote the effect of combination

Inactive Publication Date: 2015-01-28
赵全明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of poor biological activity and osteoinductive ability of tantalum metal, the inability to produce bone bonding with bone tissue in the implanted body, and the complex process and high cost of the prior art, and the low bonding strength between the obtained film layer and the matrix.

Method used

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  • Preparation method for bioactive ceramic membrane on surface of tantalum metal
  • Preparation method for bioactive ceramic membrane on surface of tantalum metal

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specific Embodiment approach 1

[0014] Specific Embodiment 1: In this embodiment, the preparation method of bioactive ceramic film on the surface of tantalum metal is realized through the following steps: 1. Carry out deoxidation film and degreasing treatment on tantalum metal in sequence; 2. Prepare electrolyte: 8-95g / L of anhydrous calcium acetate, 3-28g / L of disodium hydrogen phosphate dodecahydrate, 1-5g / L of disodium ethylenediaminetetraacetate, the solvent is deionized water; The metal is the anode, which is fixed with a fixture and immersed in the electrolyte configured in step 2. The stainless steel electrolyte tank is the cathode, and the pulse power supply is used. The electrical parameters are set as follows: pulse voltage 210-460V, pulse frequency 300-600Hz, duty cycle 10- 50%, carry out micro-arc oxidation for 5-30min; 4. Put the tantalum metal treated in step 3 into the hydrothermal autoclave, then raise the temperature to 300-600°C at a heating rate of 2-8°C / min, and keep it warm 5-8h, contro...

specific Embodiment approach 2

[0015] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, the tantalum metal is sequentially deoxidized and degreased: 100#, 200#, 300#, 500#, 800#, Use 1000#, 1200#, 1500#, 2000# sandpaper to polish to remove the oxide film, then wash with acetone to remove surface oil, then ultrasonically clean with deionized water, and dry naturally.

specific Embodiment approach 3

[0016] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the electrolyte is prepared in step two: 32-63g / L anhydrous calcium acetate, 7-15g / L disodium hydrogen phosphate dodecahydrate, 2-4g / L disodium ethylenediamine tetraacetate, the solvent is deionized water, and other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method for a bioactive ceramic membrane on the surface of a tantalum metal, for solving the problem that the tantalum metal cannot generate bone bonding with bone tissues after being implanted in a body due to poor activity and bone induction capacity, and the problems that the prior art is complicated in process and high in cost and bonding strength of an obtained membrane layer and a matrix is weak. The preparation method comprises the following steps: 1, treating the surface of the tantalum metal; 2, preparing electrolyte; 3, with the tantalum metal as an anode and stainless steel as a cathode, setting an electrical parameter and carrying out micro-arc oxidation; and 4, carrying out hydrothermal treatment in a hydrothermal autoclave to obtain the bioactive ceramic membrane. With the adoption of the preparation method, process is simple; the used electrolyte is non-toxic, non-pollution and environmentally friendly, a calcium tantalite-containing coating with high biological activity and binding force is directly prepared on the tantalum metal by virtue of micro-arc oxidation and hydrothermal treatment, and the biological activity of the tantalum metal is well improved.

Description

technical field [0001] The invention relates to a preparation method of a bioactive ceramic film on the surface of tantalum metal. Background technique [0002] Tantalum (tantalum) is a gray, bright, hard metal with extremely stable chemical properties. It has been widely used in orthopedic fields such as artificial joints, osteonecrosis, spine, and bone defects. However, it is a biologically inert material, and its biological activity and Osteoinductive ability is poor, and stress concentration is easy to cause adverse consequences such as bone resorption around the implant. After being directly implanted into the human body, it will be surrounded by a layer of cystic fibrous membrane, which makes it difficult to form a firm combination with the matrix quickly, which not only prolongs the implant. Repair cycle, but also affects the success rate of implantation. Although bone tissue can grow into tantalum metal to produce mechanical occlusal fixation, the strength is not hi...

Claims

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Application Information

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IPC IPC(8): C25D11/26
CPCC25D11/26
Inventor 赵全明杨惠林刘忠堂
Owner 赵全明
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