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Structural part with like diamond array and preparation method thereof

A technology of diamond-like structural parts, applied in the field of structural parts with diamond-like arrays and its preparation, can solve the problems of no antibacterial performance and weak bactericidal performance, and achieve the prevention of bacterial infection, significant antibacterial performance, and beneficial human health effects

Active Publication Date: 2017-06-13
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structural member with a diamond-like array has good antibacterial performance, and is used to solve the problem of weak or almost no antibacterial performance of the diamond-like coating in the prior art

Method used

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  • Structural part with like diamond array and preparation method thereof
  • Structural part with like diamond array and preparation method thereof
  • Structural part with like diamond array and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for preparing a structural member having a diamond-like array, comprising:

[0049] (1) Substrate pretreatment:

[0050] Cobalt-chromium alloy is provided as the substrate. First, the substrate is ultrasonically cleaned with distilled water for 10 minutes, then ultrasonically cleaned with acetone and absolute ethanol for 20 minutes, and then the substrate is dried with nitrogen and placed in a blast drying oven at 100 ° C. ;

[0051] Place the above-mentioned substrate in the vacuum chamber of the multifunctional ion coating equipment (V-Tech MF610 / 610), and first evacuate the vacuum chamber to a background vacuum degree of 5.0×10 -3 Pa, open the main valve of the argon cylinder, the pressure reducing valve, the ion source valve, the arc valve and the target valve, and the mass flow meter feed argon gas into the vacuum chamber to perform glow cleaning on the substrate, wherein the conditions for glow cleaning are: argon The gas flow rate is 300sccm, the worki...

Embodiment 2

[0056] A method for preparing a structural member having a diamond-like array, comprising:

[0057] (1) Substrate pretreatment:

[0058] Provide a polyetheretherketone (PEEK) substrate as a substrate. First, use distilled water to ultrasonically clean the substrate for 10 minutes, then use acetone and absolute ethanol to ultrasonically clean it for 20 minutes, and then blow dry the substrate with nitrogen, and put it in the air to dry. Dry in oven at 80°C;

[0059] Place the above substrate in a multifunctional ion coating equipment (V-Tech MF610 / 610), and vacuumize to 5.0×10 - 3 Pa, open the main valve of the argon cylinder, the pressure reducing valve, the ion source valve, the arc valve, the target valve and the mass flow meter pass argon gas into the vacuum chamber to perform glow cleaning on the substrate. Argon gas is introduced into the room, the flow rate of argon gas is 400sccm, the working pressure is 1.4Pa, and the substrate bias voltage is -500V. The substrate i...

Embodiment 3

[0065] A method for preparing a structural member having a diamond-like array, comprising:

[0066] (1) Substrate pretreatment:

[0067] Provide a Ni-Ti alloy as a substrate. First, use distilled water to ultrasonically clean the substrate for 10 minutes, then use acetone and absolute ethanol to ultrasonically clean it for 20 minutes, then dry the substrate with nitrogen, and put it in a blast drying oven at 120 ° C. drying;

[0068] Place the above-mentioned substrate in the multifunctional ion coating equipment (V-Tech MF610 / 610), and the background vacuum degree is 5.0×10 -3 Under the condition of Pa, open the main valve of the argon cylinder, the pressure reducing valve, the ion source valve, the arc valve and the target valve, and the mass flow meter pass argon gas into the vacuum chamber to perform glow cleaning on the substrate. Among them, the conditions of glow cleaning For: feed argon gas into the vacuum chamber, the flow rate of argon gas is 500 sccm, the working ...

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Abstract

The invention provides a structural part with a like diamond array. The structural part comprises a basal body, and a like diamond nanometer needle array arranged on the basal body and with a tip structure; and the like diamond nanometer needle array is obtained by etching a like diamond coating layer formed on the basal body. The structural part with the like diamond array can generate pressure on cell walls of bacteria, punctures the cell walls of the bacteria to enable the bacteria to extend and finally dissolve to cause death, effectively damages formation of biofilms, and is prominent in antibacterial property. The invention further provides a preparation method of the structural part with the like diamond array.

Description

technical field [0001] The invention relates to the field of superhydrophobic materials, in particular to a structural member with a diamond-like array and a preparation method thereof. Background technique [0002] Biomaterials, especially biomaterials used in medical implants (such as automatic implantable cardiac defibrillators, urinary catheters, etc.) and surgical instruments, must meet various requirements for clinical use due to their direct contact with human tissues. In addition to having good physical, chemical and mechanical properties of general materials, they must also have antimicrobial properties to avoid bacterial colonization, which can lead to the formation of biofilms on the surface of equipment and bacterial infection. Biofilm is a colony aggregate formed by the extracellular polymers secreted by microorganisms in response to changes in the external environment and aggregated on the surface of the medium. The formation of biofilm will increase the drug r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/02C23C14/06C23C14/16C23C14/32C23C14/35C23C16/26C23C16/513C23C28/00C01B32/05B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C23C14/022C23C14/025C23C14/0605C23C14/16C23C14/325C23C14/35C23C16/26C23C16/513C23C28/322C23C28/343
Inventor 唐永炳杨扬秦盼盼张文军
Owner SHENZHEN INST OF ADVANCED TECH
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