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Preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silica sol multistage compound bioactive coating composite material

A technology of micro-arc oxidation and biological activity, which is applied in the direction of liquid-coated devices, coatings, anodic oxidation, etc., to achieve the effect of improving the speed of bone repair, improving the quality of bone repair, and good toughness

Inactive Publication Date: 2014-02-05
JIAMUSI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that the existing bone fixation materials and short-term hard tissue implant materials are not at the same time matching human bone density and elastic modulus, but also have certain biological activity and degradability, and at the same time, the dissolution rate is controllable. And provide the preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silica sol multi-stage composite bioactive coating composite material

Method used

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  • Preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silica sol multistage compound bioactive coating composite material
  • Preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silica sol multistage compound bioactive coating composite material
  • Preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silica sol multistage compound bioactive coating composite material

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specific Embodiment approach 1

[0026] Specific embodiment one: the preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silica sol multi-stage composite bioactive coating composite material in this embodiment is carried out according to the following steps:

[0027] 1. Surface pretreatment of pure magnesium samples: use 1500-mesh sandpaper to roughly grind the surface of pure magnesium samples to obtain rough-ground pure magnesium samples, and then use acetone and distilled water in turn to rough-grind pure magnesium samples Ultrasonic cleaning was carried out, in which acetone was used for ultrasonic cleaning for 15 minutes to 25 minutes, and distilled water was used for ultrasonic cleaning for 15 minutes to 25 minutes. After natural drying, the pretreated pure magnesium sample was obtained;

[0028] Second, the configuration of the electrolyte: ①, the Na 2 SiO 3 Add it into distilled water and stir until completely dissolved to obtain Na with a concentration of 30g / L 2 SiO 3 Aqueou...

specific Embodiment approach 2

[0041] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the alkaline electrolyte described in step ② in step 2 is KOH. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0042] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step three, the electrolyte solution obtained in step two is put into a stainless steel electrolytic cell, the cathode of the micro-arc oxidation equipment is connected to the stainless steel electrolytic cell, and aluminum wire is used Connect the pretreated pure magnesium sample obtained in step 1 to the anode of the micro-arc oxidation equipment, adjust the distance between the cathode and the anode to 40mm-60mm, and then set the ultrasonic frequency at 40kHZ-60kHZ, the micro-arc oxidation voltage at 150V-400V, pulse Oxidize for 20min-30min under the conditions of width 30μs-80μs, pulse frequency 300HZ-800HZ and duty ratio 0.9%-6.4%, to obtain magnesium samples after ultrasonic micro-arc oxidation treatment, and use distilled water for ultrasonic micro-arc oxidation treatment The final magnesium sample was rinsed for 3 to 5 times, and then dried naturally to...

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Abstract

The invention provides a preparation method of a magnesium surface ultrasonic micro-arc oxidation-HF-silica sol multistage compound bioactive coating composite material, relates to a method for preparing a pure magnesium bioactive coating composite material, and aims to solve the problem that matched human bone density and elastic modulus, certain bioactivity and degradability and controllable dissolution rate can not be simultaneously achieved for the existing bone fixing material and short-term hard tissue implantation material. The method comprises the following steps: 1, performing surface pretreatment on a pure magnesium sample; 2, preparing an electrolyte; 3, performing ultrasonic micro-arc oxidation treatment; and 4, soaking, and performing heating aftertreatment. According to the invention, for the prepared bioactive coating composite material, the bottom layer is compact, the surface layer is porous, and both the corrosion resistance and wear resistance of the prepared composite material are superior to those of a simplex micro-arc oxidation coating. The method provided by the invention can be used for preparation of the magnesium surface ultrasonic micro-arc oxidation-HF-silica sol multistage compound bioactive coating composite material.

Description

technical field [0001] The invention relates to a method for preparing pure magnesium bioactive coating composite material. Background technique [0002] With the increase of trauma such as bone injury and bone defect and the improvement of human living standards, the requirements for biomaterials such as hard tissue replacement, bone fixation and repair are getting higher and higher. At the same time, problems such as bacterial infection caused by their implantation are also gradually causing people's attention. [0003] Traditional hard tissue replacement and bone fixation materials such as stainless steel and other metal materials have poor biocompatibility, and their elastic modulus is very different from that of human bone, which is prone to stress shielding effect, which can reduce bone strength and slow healing; while polylactic acid and other polymer materials Poor performance, it is difficult to bear a large load. Titanium alloys that have been successfully used i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/30B05C3/09B05D3/00
Inventor 李慕勤刘江马臣
Owner JIAMUSI UNIVERSITY
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