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Medical copper-containing composite coating and preparation method thereof

A composite coating and coating technology, applied in the field of medical materials, can solve the undisclosed coating thickness, copper content and biocompatibility synergistic relationship, antibacterial composite copper-containing coating has no clear coating structure, undisclosed copper Content control technology and preparation methods and other issues, to achieve good blood compatibility, avoid damage, and ensure the effect of mechanical properties

Active Publication Date: 2020-04-21
成都迈德克科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The antibacterial composite copper-containing coating disclosed in the above-mentioned prior art does not clarify its specific coating structure, and does not disclose the copper content control technology and preparation method suitable for biocompatibility matching in the field of biomedical materials and medical devices , and did not disclose the synergistic relationship between coating thickness, copper content and biocompatibility, which limits the scope of application of the coating in the biological field

Method used

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  • Medical copper-containing composite coating and preparation method thereof
  • Medical copper-containing composite coating and preparation method thereof
  • Medical copper-containing composite coating and preparation method thereof

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preparation example Construction

[0043] In order to solve the second technical problem of the present invention, the preparation method of the medical copper-containing composite coating comprises:

[0044] A. Start glowing under an argon atmosphere of 0.8-2.0Pa, then stabilize the pressure at 1-1.5Pa, and deposit it on the substrate by sputtering only through argon gas. The power of the sputtering deposition is 40-100W. The substrate bias of sputtering deposition is 40-100V; wherein, the time of sputtering deposition with only argon gas is preferably 10min;

[0045] B. Infuse nitrogen again, adjust the flow rate of nitrogen and argon to make the ratio of nitrogen and argon 1:8 to 1:1, open the high-purity copper target and high-purity titanium target and continue sputtering deposition on the substrate for 10 to 40 minutes to obtain medical containing Copper composite coating.

[0046] Preferably, the substrate is medical stainless steel, high-purity titanium, titanium alloy, nickel-titanium alloy, pure iron...

Embodiment 1～4

[0053] Pump the vacuum in the chamber of the sputtering furnace to 6.0×10 -4 Pa, the temperature of the medical nickel-titanium substrate is heated to the temperature shown in Table 1, and the argon gas with a purity of 99.99% is introduced, and the chamber pressure is adjusted for backsputtering for 15 minutes, and then the flow rate of the argon gas is adjusted so that the air pressure in the chamber of the sputtering furnace is Carry out the glow operation at about 1Pa. After the glow is completed, stabilize the air pressure at 1Pa, adjust the sputtering power to the value required in Table 1, add the substrate bias voltage of 70V, and only pass argon gas for sputtering deposition for 10 minutes, so that the substrate has a good The binding force, and then through the nitrogen sputtering 20min Cu / Ti-N composite coating on the substrate. And the Cu / Ti-N composite coating was prepared by adjusting the flow rate of nitrogen and argon to adjust the nitrogen-argon ratio to the r...

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Abstract

The invention relates to a medical copper-containing composite coating and a preparation method thereof, and belongs to the technical field of medical materials. The medical copper-containing composite coating comprises an intermediate phase or a compound formed by three elements of copper, titanium and nitrogen, and the copper content of the coating is larger than 10 wt% and not larger than 60 wt%; an X-ray diffraction pattern of the medical copper-containing composite coating shows characteristic diffraction peaks, namely Cu2Ti, CuN3 and TiN. The medical copper-containing composite coating disclosed by the invention is a new biomedical material which has high blood compatibility and degradability; the coating has certain toughness, so that damage to the coating in the deformation processof the medical instrument is avoided; and the mechanical property and the coating quality of the coating are guaranteed through the preparation method.

Description

technical field [0001] The invention relates to a medical copper-containing composite coating and a preparation method thereof, belonging to the technical field of medical materials. Background technique [0002] Medical implant materials are prone to failure during clinical use, which is closely related to bacterial infection. After device implantation fails, it needs to bear a serious economic burden and the pain of secondary surgery. Therefore, some researchers use surface modification technology to provide biomedical coatings with certain antibacterial effects. [0003] Copper ions have certain antibacterial properties, but have certain cytotoxicity in excess; titanium and its alloys have good biological properties and low elastic modulus, and are widely used in dental implants, joint prostheses, artificial joints and other fields. [0004] In 2015, some researchers disclosed a composite coating method using arc ion plating and magnetron sputtering to prepare Ti-Cu-N na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/34C23C14/06
CPCC23C14/0036C23C14/3464C23C14/0688
Inventor 刘恒全刘忍潘长江李林刘尧灏
Owner 成都迈德克科技有限公司
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