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Preparation method and application of a high-entropy alloy for passive heavy-duty bulletproof armor

A high-entropy alloy and heavy-duty technology, which is applied in the field of high-entropy alloys, can solve the problems of poor protection of high-speed warheads, can not be used to protect heavy weapons, and is easy to split into many fragments, so as to achieve uniform structure and mechanical properties and good plasticity Moldability, ease of processing

Active Publication Date: 2022-03-25
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current armor material is aluminum oxide (A1 2 o 3 ) / high performance polyethylene fiber, boron carbide (B 4 C) / Aramid composite materials are representative. These composite materials have the characteristics of good elastic resistance, simple production process and obvious weight reduction effect. When the high-speed warhead hits the ceramic plate, the ceramic plate is easy to split into many pieces, resulting in a whole The broken and falling off of the block material increases the non-bulletproof area and causes failure.
The other type is soft bulletproof material, which has simple structure, light weight, and good comfort, but it has poor protection effect on high-speed warheads, cannot be used to protect heavy weapons, and is not suitable for armor materials

Method used

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  • Preparation method and application of a high-entropy alloy for passive heavy-duty bulletproof armor
  • Preparation method and application of a high-entropy alloy for passive heavy-duty bulletproof armor
  • Preparation method and application of a high-entropy alloy for passive heavy-duty bulletproof armor

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Experimental program
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Effect test

Embodiment 1

[0029] A preparation method for high-entropy alloys for passive heavy-duty bulletproof armor, comprising the steps of:

[0030] (1) Powder mixing: according to the atomic percentage of the high-entropy alloy 1:1:1:1:0.1, five elemental powders of cobalt, chromium, iron, nickel, and boron with a purity of 99.9% were mixed to obtain a mixed powder;

[0031] (2) Melting: Fill the above mixed metal powder into the crucible melting furnace of the spray deposition equipment and melt it at 1500°C to obtain molten metal;

[0032] (3) Lubricant coating: the inside of the rectangular mold on the workbench in the deposition chamber is coated with a water-based colloidal graphite lubricant, and after drying, the high-purity argon gas with a flow rate of 100 sccm is fed to form a protective atmosphere;

[0033] (4) Deposition: Fill the above-mentioned molten metal into the molten metal bag and pass high-purity argon gas with a pressure of 1.2MPa. The molten metal is atomized through a nozz...

Embodiment 2

[0040] A preparation method for high-entropy alloys for passive heavy-duty bulletproof armor, comprising the steps of:

[0041](1) Powder blending: five elemental powders of cobalt, chromium, iron, nickel and boron with a purity of 99.9% were mixed according to the atomic percentage of the high-entropy alloy 1:1:1:1:0.3 to obtain a mixed powder;

[0042] (2) Melting: Fill the above mixed metal powder into the crucible melting furnace of the spray deposition equipment and melt it at 1600°C to obtain molten metal;

[0043] (3) Lubricant coating: DFY-1 type grease-based coating lubricant is coated inside the rectangular mold on the workbench in the deposition chamber, and after drying, the high-purity argon gas with a flow rate of 80 sccm is formed to form a protective atmosphere;

[0044] (4) Deposition: Fill the above-mentioned molten metal into the molten metal bag and pass high-purity argon gas with a pressure of 1.0MPa. The molten metal is atomized through a nozzle with a di...

Embodiment 3

[0051] A preparation method for high-entropy alloys for passive heavy-duty bulletproof armor, comprising the steps of:

[0052] (1) Powder blending: five elemental powders of cobalt, chromium, iron, nickel and boron with a purity of 99.9% were mixed according to the atomic percentage of the high-entropy alloy 1:1:1:1:0.5 to obtain a mixed powder;

[0053] (2) Melting: Fill the above mixed metal powder into the crucible melting furnace of the spray deposition equipment and melt it at 1550°C to obtain molten metal;

[0054] (3) Lubricant coating: the inside of the rectangular mold on the workbench in the deposition chamber is coated with a water-based colloidal graphite lubricant, and after drying, the high-purity argon gas with a flow rate of 90 sccm is formed to form a protective atmosphere;

[0055] (4) Deposition: Fill the above-mentioned molten metal into the molten metal bag and pass high-purity argon gas with a pressure of 0.9MPa. The molten metal is atomized through a no...

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Abstract

The invention discloses a preparation method and application of a high-entropy alloy for passive heavy-duty bulletproof armor. Preparation: (1) Powder blending: Mix cobalt, chromium, iron, nickel, and boron elemental powders according to the atomic percentage of high-entropy alloys to obtain mixed powders; (2) Melting: Melt the mixed powders into molten metal; (3) Coating Lubricant: Apply lubricant to the mold in the deposition chamber, and pass inert gas after drying; (4) Deposition: Fill the molten metal into the molten metal bag, pass inert gas to atomize and deposit the molten metal on the In the mold, a CoCrFeNiB high-entropy alloy plate is obtained; (5) homogenization treatment: CoCrFeNiB is placed in a vacuum heating furnace for heat treatment; (6) cryogenic treatment: the homogenized CoCrFeNiB is placed in liquid nitrogen for cryogenic treatment; (7) Cold rolling: cold rolling the CoCrFeNiB after cryogenic treatment to obtain a dense high-entropy alloy. Application: The prepared high-entropy alloy is used as a substrate material in bulletproof materials such as bulletproof inserts, bulletproof helmets, and bulletproof shields, or for manufacturing armor plates.

Description

technical field [0001] The invention relates to the technical field of high-entropy alloys, in particular to a preparation method and application of high-entropy alloys for passive heavy-duty bulletproof armor. Background technique [0002] With the development of modern warfare weapons, combat equipment will suffer more deadly attacks in future operations, and newer and higher requirements will be put forward for protection technology, and passive armor, such as homogeneous armor, composite armor, reactive armor, etc. Composed of combined armor or modular armor, and strive not to be penetrated. In order to improve the protection performance of the bulletproof plate, especially against the destructive effects such as bullet penetration, bomb explosion and fragment killing, it is necessary to develop materials with high protection coefficient and can reduce the armor-piercing kinetic energy of the warhead. The current armor material is aluminum oxide (A1 2 o 3 ) / high perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C30/00C22F1/02C22F1/00B22F3/115F41H5/00F41H1/06
CPCC22C1/02C22C30/00C22F1/02C22F1/00B22F3/115F41H5/00F41H1/06
Inventor 王泽王云壮秦青丰夏少华孙志娟苏冬梅张波吴振华杨晓红丛孟启李小平雷卫宁
Owner JIANGSU UNIV OF TECH
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