Preparation method of titanium-base titanium oxide-silver chloride composite coating material

A composite coating, silver chloride technology, used in coatings, electrolytic coatings, surface reaction electrolytic coatings, etc., can solve the problems of expensive equipment and high cost, and achieve long-term antibacterial stability.

Inactive Publication Date: 2014-03-12
INNER MONGOLIA METAL MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are expensive and the equipment is expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] With pure titanium as the substrate, the surface is polished, cleaned and dried by metallographic sandpaper as the anode, the spectrally pure graphite sheet is used as the cathode, and 0.5wt% HF solution containing 10wt% sodium chloride is used as the electrolyte, and the anode is under 20V voltage After oxidizing for 20 minutes, take it out and clean it. After drying at 100°C, soak in 0.5g·mL -1 AgNO3 soaking solution, take it out after 8 minutes, wash the surface with distilled water, dry it at 100°C, put it in a muffle furnace, heat it at 570°C for 3 hours, and cool it with the furnace to get the titanium-based titanium oxide silver chloride composite coating. layer material.

Embodiment 2

[0027] With Ti6Al4V as the substrate, the surface is polished, cleaned and dried by metallographic sandpaper as the anode, the spectrally pure graphite sheet is used as the cathode, and 0.3wt% HF solution containing 20wt% sodium chloride is used as the electrolyte. After oxidizing for 30 minutes, take it out and clean it. After drying at 100°C, soak in 5g·mL -1 AgNO3 soaking solution, take it out after 6 minutes, wash the surface with distilled water, dry it at 100°C, put it in a muffle furnace, heat it at 550°C for 4 hours, and cool it with the furnace to get the titanium-based titanium oxide silver chloride composite coating. layer material.

Embodiment 3

[0029] With pure titanium as the substrate, the surface is polished, cleaned and dried by metallographic sandpaper as the anode, the spectrally pure graphite sheet is used as the cathode, and 0.1wt% HF solution containing 10wt% sodium chloride is used as the electrolyte. The anode is under 20V voltage After oxidizing for 40 minutes, take it out and clean it. After drying at 100°C, soak in 0.5g·mL -1 AgNO3 soaking solution, take it out after 8 minutes, wash the surface with distilled water, dry it at 100°C and place it in a muffle furnace, heat treat it at 580°C for 3 hours, and cool it with the furnace to get the titanium-based titanium oxide silver chloride composite coating. layer material.

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Abstract

The invention relates to a preparation method of a titanium-base titanium oxide-silver chloride composite coating material, which is characterized by comprising the following steps: by using titanium or titanium alloy Ti6Al4V as an anode, graphite flakes as a cathode and a 10-30 wt% sodium chloride HF solution as an electrolyte in which the HF concentration is 0.1-0.7 wt%, carrying out electrolytic oxidation on the anode titanium to form a chloridion-containing titanium oxide nanotube array on the surface; by using silver nitrate as an immersion solution, immersing the titanium-base titanium oxide nanotube array in the silver nitrate solution, taking out, and carrying out heat treatment to further cure the silver chloride formed in the tube cavity until the titanium oxide nanotube array structure slumps and the crystalline phase structure is converted into an anatase/rutile mixed type, thereby obtaining the titanium oxide-silver chloride composite coating material with antibacterial property and bioactivity. The invention aims to provide a preparation method for preparing a titanium-base titanium oxide-silver chloride composite coating material with antibacterial property and bioactivity on a titanium alloy surface at low cost without expensive equipment.

Description

[0001] technical field [0002] The invention relates to a method for preparing a composite coating material with antibacterial properties and biological activity on the surface of a medical titanium alloy, which belongs to the preparation technology of biological materials for bone repair. Background technique [0003] Titanium and titanium alloys are widely used in the fields of dentistry and surgical orthopedic implants due to their good biocompatibility and strong mechanical properties. However, due to its biological inertness and non-antibacterial properties, after it is implanted into the human body, it is prone to deformation, loosening, and inflammation, resulting in failure of the implant. After the surface modification technology is used to endow it with biological activity and antibacterial properties, new bone can be directly deposited on the surface of titanium alloy to form osseointegration, and bacteria can grow around the implanted material, reducing the inci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26
Inventor 田甜王凡董海成白福全田小亭周宏伟袁永健袁媛
Owner INNER MONGOLIA METAL MATERIAL RES INST
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