Preparation method for super-hydrophilic metal/high-entropy ceramic composite antibacterial coating

A ceramic composite and antibacterial coating technology, which is applied in metal material coating technology, coating, ion implantation plating, etc., can solve the problems of insufficient antibacterial performance and bone healing ability

Active Publication Date: 2021-11-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the lack of antibacterial performance and insufficient bone healing ability of existing medical implant materials, the present invention provides a method for preparing a superhydrophilic metal / high-entropy ceramic composite antibacterial coating. By adopting dual-cathode plasma reactive deposition technology, Preparation of metal (Ag) / high-entropy nitride ceramic ((TiZrNbTaMo)N) composite coating with micro-nano structure on the surface of titanium-based alloy

Method used

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  • Preparation method for super-hydrophilic metal/high-entropy ceramic composite antibacterial coating
  • Preparation method for super-hydrophilic metal/high-entropy ceramic composite antibacterial coating
  • Preparation method for super-hydrophilic metal/high-entropy ceramic composite antibacterial coating

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Embodiment 1

[0021] The substrate is made of medical grade pure titanium (grade: TA2), the sample size is 10mm×10mm×3mm, and the pre-coated surface size is 10mm×10mm. The surface of the substrate is sanded, polished, degreased, cleaned and dried step by step with sandpaper, and then put into a desiccator for later use.

[0022] The source target was prepared by hot pressing and sintering, and the components of the target were prepared in molar ratio: 5% Ag, 19% Ti, 19% Zr, 19% Nb, 19% Ta, 19% Mo.

[0023] Place the substrate and the target on the source and workpiece sample holders of the dual-cathode plasma reaction deposition furnace respectively, and adjust the process parameters as follows: the target voltage is 850V, the workpiece voltage is 300V, the distance between the target and the workpiece is 10mm, argon / The nitrogen flow ratio is 10:1, the working pressure is 40Pa, the deposition temperature is 850°C, and the deposition time is 3.5h. After the deposition, the sample was take...

Embodiment 2

[0028] The substrate is made of medical-grade titanium alloy (grade: TC4), the sample size is φ30mm×3mm, and the surface size of the pre-deposited coating is φ30mm. The surface of the substrate is sanded, polished, degreased, cleaned and dried step by step with sandpaper, and then put into a desiccator for later use.

[0029] The source target is prepared by hot pressing and sintering, and the components of the target are formulated in molar ratio as follows: 15At% Ag, 17At% Ti, 17At% Zr, 17At% Nb, 17At% Ta, 17At% Mo.

[0030] Place the substrate and the target on the source and workpiece sample holders of the dual-cathode plasma reaction deposition furnace respectively, and adjust the process parameters as follows: the target voltage is 800V, the workpiece voltage is 300V, the distance between the target and the workpiece is 10mm, argon / The nitrogen flow ratio is 10:1, the working pressure is 40Pa, the deposition temperature is 850°C, and the deposition time is 3h.

[0031]...

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Abstract

The invention discloses a preparation method for a super-hydrophilic metal / high-entropy ceramic composite antibacterial coating, and belongs to the technical field of medical antibacterial coatings. The metal (Ag) / high-entropy nitride ceramic ((TiZrNbTaMo)N) composite coating with a micro-nano structure is prepared on the surface of a titanium-based alloy by using a double-cathode plasma reaction deposition technology, so that the surface of the material has super-hydrophilic property and stable silver ion release ability, the material is endowed with good biocompatibility and rapid and long-acting antibacterial performance, the wear resistance of the surface of the material can be further improved, and the use requirements of hard implant materials in the field of bone repair are met.

Description

technical field [0001] The invention belongs to the technical field of medical antibacterial coatings, and in particular relates to a preparation method of a superhydrophilic metal / high-entropy ceramic composite antibacterial coating. Background technique [0002] Pure titanium and its alloys are widely used in the field of human bone repair and hard implant materials due to their good biocompatibility, excellent mechanical properties and chemical stability. Although the materials used in the surgical process will be sterilized, titanium and its alloys themselves do not have antibacterial properties. Differences in individual immune systems and the presence of drug-resistant bacteria can lead to postoperative bacterial infections in some patients, which eventually lead to surgical failure. Nano-silver, an inorganic antibacterial agent with good antibacterial properties, is used in the field of human bone repair, so that the implant material itself has antibacterial properti...

Claims

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Application Information

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IPC IPC(8): C23C14/16C23C14/34C22C30/00A61L27/30A61L27/50
CPCC23C14/165C23C14/3407C23C14/3414C22C30/00A61L27/306A61L27/50
Inventor 徐江赵焰杰蒋书运
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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