Ceramic / high-entropy alloy laminated material and preparation method thereof

A technology of high-entropy alloy and laminated materials, which is applied in the field of ceramic/high-entropy alloy laminated materials and its preparation, can solve the problems of limited interface strength, cracking and breaking of ceramic panels, and the decline of anti-elastic performance, so as to improve the anti-secondary The effect of improving the secondary impact ability, high energy impact resistance and secondary impact resistance

Active Publication Date: 2018-08-10
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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  • Ceramic / high-entropy alloy laminated material and preparation method thereof
  • Ceramic / high-entropy alloy laminated material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

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

[0026] This embodiment also provides a preparation method of the ceramic / high-entropy alloy laminated material, comprising the following steps:

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

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

[0029] Step 3: Put the mold i...

Embodiment 2

[0031] High-entropy alloys are 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 preparation method of the ceramic / high-entropy alloy laminated material, comprising the following steps:

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

[0034] Step 2: Put the boron carbide-titanium diboride composite ceramic panel into the graphite mould, spread the high-entropy alloy powder evenly on the surface by layering method, the thickness of th...

Embodiment 3

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

[0038] This embodiment also provides a preparation method of the ceramic / high-entropy alloy laminated material, comprising 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 metal elements are mixed in molar percentages: Co, Cr, Fe, Ni, Al are mixed at 20% each, and the ball milling medium is stainless steel balls or hard alloy balls , the mass ratio of balls to materials 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 mould, spread the high-entropy alloy powder evenly on the surface by layering method, the thickness of the powder is 10mm, and compact it.

[0041]Step 3: Put the mo...

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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 the heavy material seriously affects the user's mobility. 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, ceramics have extremely high hardness and compressive strength, as well as good heat resistance, oxidation resistance, and corrosion resistance. Higher than standard homogeneous armor steel, so suitable as armor material. [0003] For impact-resistant ceramics, the ceramic can passivate the projectile body during the penetration process of the projectile, reducing the ability to continue to penetrate, and an inverted crushing cone is formed in the ceramic, which can disperse the impact load. The breaker cone provides the pri...

Claims

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Application Information

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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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