Antibacterial and antiviral CoCrCuFeNi high-entropy alloy and in-situ alloying method employing selective laser melting and application thereof

A technology of laser selective melting and high-entropy alloys, which is applied in the field of high-entropy alloys, can solve the problems of complex shape or structure manufacturing limitations, antibacterial and antiviral high-entropy alloys are not significant, and achieve excellent inactivation effect and broad spectrum The effect of antibacterial and antiviral ability and good mechanical properties

Active Publication Date: 2021-10-01
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although antibacterial and antiviral high-entropy alloys are in great demand in many applications, first: traditional processes (casting, etc.) have severely limited the manufacture of complex shapes or structures, especially the manufacture of structural parts used in medical devices. It involves integral forming technology; second: the antibacterial and antiviral high-entropy alloys made by traditional techniques are not significantly antibacterial and antiviral

Method used

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  • Antibacterial and antiviral CoCrCuFeNi high-entropy alloy and in-situ alloying method employing selective laser melting and application thereof
  • Antibacterial and antiviral CoCrCuFeNi high-entropy alloy and in-situ alloying method employing selective laser melting and application thereof
  • Antibacterial and antiviral CoCrCuFeNi high-entropy alloy and in-situ alloying method employing selective laser melting and application thereof

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Embodiment 1

[0036] An antibacterial and antiviral CoCrCuFeNi high-entropy alloy laser selective melting in-situ alloying method, comprising the following steps:

[0037] Mix the pre-alloyed CoCrFeNi powder and Cu powder to obtain a mixed powder; wherein, in the pre-alloyed CoCrFeNi powder, by molar ratio, Co:Cr:Fe:Ni=1:1:1:1; the added Cu powder The molar ratio of the pre-alloyed CoCrFeNi powder is Cu:Fe=1:1;

[0038] Spread the mixed powder on the surface of the base material. The base material used in this embodiment is stainless steel; wherein, the thickness of the powder spread is 0.03mm;

[0039] According to the anti-microbial corrosion and anti-virus component structure to be prepared, set the laser travel route, and use the laser to perform laser selective melting on the mixed powder, in which the laser power is 300W, the scanning speed is 2000mm / s, the line interval is 0.05mm, and the energy density is 100J / mm 3 , after the first layer of laser selective melting, on this basis...

Embodiment 2

[0044] An antibacterial and antiviral CoCrCuFeNi high-entropy alloy laser selective melting in-situ alloying method, comprising the following steps:

[0045] Mix the pre-alloyed CoCrFeNi powder and Cu powder to obtain a mixed powder; wherein, in the pre-alloyed CoCrFeNi powder, by molar ratio, Co:Cr:Fe:Ni=1:1:1:1; the added Cu powder The molar ratio of the pre-alloyed CoCrFeNi powder is Cu:Fe=1:1;

[0046] Spread the mixed powder on the surface of the base material. The base material used in this embodiment is stainless steel; wherein, the thickness of the powder spread is 0.03mm;

[0047] According to the anti-microbial corrosion and anti-virus component structure to be prepared, set the laser travel route, and use the laser to perform laser selective melting on the mixed powder, in which the laser power is 270W, the scanning speed is 1500mm / s, the line interval is 0.05mm, and the energy density is 120J / mm 3 , after the first layer of laser selective melting, on this basis...

Embodiment 3

[0049] An antibacterial and antiviral CoCrCuFeNi high-entropy alloy laser selective melting in-situ alloying method, comprising the following steps:

[0050] Mix the pre-alloyed CoCrFeNi powder and Cu powder to obtain a mixed powder; wherein, in the pre-alloyed CoCrFeNi powder, by molar ratio, Co:Cr:Fe:Ni=1:1:1:1; the added Cu powder The molar ratio of the pre-alloyed CoCrFeNi powder is Cu:Fe=1:1;

[0051] Spread the mixed powder on the surface of the base material. The base material used in this embodiment is stainless steel; wherein, the thickness of the powder spread is 0.03mm;

[0052] According to the anti-microbial corrosion and anti-virus component structure to be prepared, set the laser travel route, and use the laser to perform laser selective melting on the mixed powder, wherein the laser power is 150W, the scanning speed is 1000mm / s, the line interval is 0.05mm, and the energy density is 100J / mm 3 , after the first layer of laser selective melting, on this basis,...

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Abstract

The invention discloses an antibacterial and antiviral CoCrCuFeNi high-entropy alloy and an in-situ alloying method employing selective laser melting and application thereof, and belongs to the technical field of high-entropy alloys. The in-situ alloying method employing selective laser melting of the antibacterial and antiviral CoCrCuFeNi high-entropy alloy comprises the following steps: mixing pre-alloyed CoCrFeNi powder and Cu powder to obtain mixed powder; flatly laying the mixed powder layer by layer; and carrying out selective laser melting by adopting laser as an energy source. According to the method, the selective laser melting technology is combined with the antibacterial and antiviral high-entropy alloy, and in-situ alloying is achieved in the selective laser melting process, so that the alloy development efficiency is improved, and the homogeneous single-phase face-centered cubic high-entropy alloy is obtained, and the quasi-equal-atomic-ratio CoCrFeCuNi high-entropy alloy with broad-spectrum antibacterial and antiviral capacity and good mechanical property is prepared.

Description

technical field [0001] The invention relates to the technical field of high-entropy alloys, in particular to an antibacterial and anti-virus CoCrCuFeNi high-entropy alloy and a laser selective melting in-situ alloying method and application thereof. Background technique [0002] Microbial corrosion is believed to be the direct cause of many catastrophic corrosion failures. It has been reported that about 20% of the total annual corrosion loss is due to microbial corrosion, and the associated loss cost is in the billions of dollars. In addition, the new coronavirus that has swept the world has made people realize the importance of sterilizing and disinfecting materials that are frequently touched in daily life. For a long time, an important strategy for developing materials has been to select the main components according to the main performance requirements, and to impart their secondary properties by adding other elements for alloying. Therefore, material scientists add n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/28C22C30/02B33Y10/00B33Y70/00B33Y80/00
CPCB22F10/28C22C30/02B33Y10/00B33Y70/00B33Y80/00Y02P10/25
Inventor 张德良徐大可高靖博金宇婷周恩泽
Owner NORTHEASTERN UNIV
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