A kind of preparation method of ceramic/high entropy alloy laminated material

A technology of high-entropy alloys and laminated materials, applied in the field of ceramic/high-entropy alloy laminated materials and their preparation, can solve problems such as limited interface strength, decreased ballistic performance, and reduced composite armor's ballistic performance, and achieve high-energy resistance. Improving the impact performance and improving the secondary impact resistance, improving the effect of secondary impact resistance

Active Publication Date: 2019-11-26
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is an interface between ceramics and metals, and ceramics and metals are often bonded by adhesives. The strength of this weak interface is limited.
Under the penetrating impact of the projectile, the composite armor is prone to cracking and breaking of the ceramic panel. At the same time, the broken ceramics splash, the panel and the back plate are separated, the elastic resistance of the damaged area decreases, and the reflected waves generated at the interface will even reduce the composite armor. elastic energy

Method used

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  • A kind of preparation method of ceramic/high entropy alloy laminated material
  • A kind of preparation method of ceramic/high entropy alloy laminated material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The high-entropy alloy is composed of four elements: Co, Cr, Fe, and Ni. The ceramic panel is made of boron carbide ceramic material with a density of more than 95%.

[0026] This embodiment also provides a method for preparing the ceramic / high-entropy alloy laminate material, which includes the following steps:

[0027] Step 1: Select the high-entropy alloy powder of the appropriate system and prepare it by planetary ball milling. The molar percentage of metal element: Co, Cr, Fe, and Ni are mixed in a molar ratio of 3:3:3:1. The ball milling medium is stainless steel ball or Cemented carbide balls, ball-to-material mass ratio is 5:1, the speed of planetary ball mill is 200 rpm, and the total milling time is 20 hours.

[0028] Step 2: Put the boron carbide ceramic panel into the graphite mold, and spread the high-entropy alloy powder uniformly on the surface by the layering method, and the powder thickness is 0.1mm, and compacted.

[0029] Step 3: Put the mold into the sinter...

Embodiment 2

[0031] The high-entropy alloy is composed of five elements: Co, Cr, Fe, Ni, Al and Mn. The ceramic panel is a boron carbide-titanium diboride composite ceramic material with a density of more than 95%.

[0032] This embodiment also provides a method for preparing the ceramic / high-entropy alloy laminate material, which includes the following steps:

[0033] Step 1: Select the high-entropy alloy powder of the appropriate system and prepare it by planetary ball milling. The molar percentage of the elemental metal: Co, Cr, Fe, Ni, Al, Mn are mixed in a molar ratio of 35:20:20:10:15. The ball milling medium is stainless steel balls or cemented carbide balls, the mass ratio of the balls is 20:1, the speed of the planetary ball mill is 600 rpm, and the total milling time is 100 hours.

[0034] Step 2: Put the boron carbide-titanium diboride composite ceramic panel into the graphite mold, and spread the high-entropy alloy powder uniformly on the surface by the layering method, and the powde...

Embodiment 3

[0037] The high-entropy alloy is composed of five elements: Co, Cr, Fe, Ni and Al. The ceramic panel is made of titanium diboride ceramic material with a density of more than 95%.

[0038] This embodiment also provides a method for preparing the ceramic / high-entropy alloy laminate material, which includes the following steps:

[0039] Step 1: Select a suitable system of high-entropy alloy powder and prepare it by planetary ball milling, in which the percentage of elemental metal: Co, Cr, Fe, Ni, Al are mixed at 20% each, and the milling medium is stainless steel balls or cemented carbide balls , The ball-to-material mass ratio is 10:1, the speed of the planetary ball mill is 400 rpm, and the total ball milling time is 60 hours.

[0040] Step 2: Put the titanium diboride ceramic panel into the graphite mold, and spread the high-entropy alloy powder uniformly on the surface using the layering method, and the powder thickness is 10mm, and compacted.

[0041] Step 3: Put the mold into th...

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Abstract

The invention relates to a ceramic / high-entropy alloy laminated material and a preparation method thereof. The laminated material comprises a ceramic panel and a high-entropy alloy layer stacked with the ceramic panel, and the stacked area of the ceramic panel and the high-entropy alloy layer has a ceramic metal interface layer. The ceramic panel is made of a single-phase ceramic material or a multi-phase ceramic material of two or more combinations of oxides, borides, nitrides, carbides or silicides. The high-entropy alloy layer is formed by four or more elements of Co, Cr, Fe, Ni, Al, Mn,Mo, Ti, Cu, Zn, Si, Sn, W, Ga or Sr. Compared with a laminated construction material prepared by a traditional adhesion method, the ceramic / high-entropy alloy laminated material is greatly improvedin high-energy impact resistance and secondary impact resistance under the same surface density.

Description

Technical field [0001] The invention relates to a ceramic / high-entropy alloy laminated material and a preparation method thereof. Background technique [0002] For a long time, bulletproof armor is mainly made of metal, and heavy materials have seriously affected the mobility of users. Therefore, the contradiction between penetration resistance and quality is an important issue that needs to be solved in armor protection research. As a low-density material, ceramic has extremely high hardness and compressive strength, as well as good heat resistance, oxidation resistance, and corrosion resistance. It also has good anti-elastic properties against jets and high-energy armored bullets, and has a large protection coefficient. Higher than the standard homogeneous armor steel, so suitable for armor materials. [0003] For impact-resistant ceramics, the ceramic can passivate the projectile during the penetration of the projectile, reducing the ability to continue to penetrate, and an inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/04B22F3/10
CPCB22F3/1007B22F7/04B22F2998/00B22F2201/20B22F2201/10
Inventor 季伟孙宇宸傅正义王为民王皓王玉成张金咏张帆
Owner WUHAN UNIV OF TECH
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