Preparation method for metal/ceramic multilayer composite with resistance to high-energy shock

A multi-layer composite material and ceramic technology, applied in the field of material science, can solve the problems of low high temperature resistance and no secondary impact resistance, and achieve strong secondary impact resistance, excellent high energy resistance, and reliable secondary impact performance The effect of the design

Active Publication Date: 2013-04-03
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to avoid the deficiencies of the prior art, the present invention proposes a method for preparing a high-energy impact-resistant metal / ceramic multilayer composite material, which overcomes the problems of low high temperature resistance and no secondary impact resistance of the materials prepared in the prior art.

Method used

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  • Preparation method for metal/ceramic multilayer composite with resistance to high-energy shock
  • Preparation method for metal/ceramic multilayer composite with resistance to high-energy shock

Examples

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Effect test

Embodiment 1

[0031] Embodiment 1: Zr / SiC multilayer ceramic composite material

[0032] Step 1: Preparation of SiC ceramic slurry

[0033] Add SiC ceramic powder with a particle size of 0.5 μm, dispersant (triethyl phosphate), solvent (isopropanol and toluene, volume ratio 1:1) into the ball mill jar, where ceramic powder: dispersant: solvent = 45%: 3%:40%, ball milled for 48 hours, then add a binder (polyvinyl butyral) with a mass fraction of 5%, a plasticizer (glycerol and dioctyl phthalate) with a mass fraction of 7%. , with a volume ratio of 1:1) ball milled for 48 hours to obtain a uniform and stable SiC ceramic slurry, which was packaged for use.

[0034] Step 2: Preparation of Zr metal paste

[0035] Add Zr powder with a particle size of 200 mesh, dispersant (triethyl phosphate), solvent (isopropanol and toluene, volume ratio is 1:1) into the ball mill tank, wherein Zr powder: dispersant: solvent = 70%: 3% : 15% (mass percentage), ball milling and dispersing for 24 hours; then ad...

Embodiment 2

[0046] Example 2: Ti / Si 3 N 4 multilayer ceramic composite

[0047] Step 1: Si 3 N 4 Preparation of ceramic slurry

[0048] Si with a particle size of 0.5 μm 3 N 4 Ceramic powder, dispersant (triethyl phosphate), solvent (isopropanol and toluene, the volume ratio is 1:1) are added to the ball mill jar, in which ceramic powder: dispersant: solvent = 45%: 3%: 40%, ball mill After 48 hours, add a binder (polyvinyl butyral) with a mass fraction of 5%, a plasticizer (glycerol and dioctyl phthalate) with a mass fraction of 7%, and the volume ratio is 1:1 ) ball milled for 48 hours to obtain uniform and stable Si 3 N 4 Ceramic slurry, packaged for use.

[0049] Step 2: Preparation of Ti metal paste

[0050] Add Ti powder with a particle size of 325 mesh, dispersant (triethyl phosphate), solvent (isopropanol and toluene, volume ratio is 1:1) into the ball mill tank, wherein Ti powder: dispersant: solvent = 70%: 3% : 15% (mass percentage), ball milling and dispersing for 24 ...

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Abstract

The invention relates to a preparation method for a metal / ceramic multilayer composite with resistance to high-energy shock and aims to overcome the problems of low high-temperature resistance, no resistance to secondary shock and the like of materials prepared in the prior art. According to the invention, refractory metal powder and high-temperature hard ceramic powder are subjected to tape casting, rolling and hot-pressing sintering so as to prepare the metal / ceramic multilayer composite; a ceramic layer is prepared through tape casting and rolling, and the phase (a single-phase ceramic or a multiphase ceramic), the structure (a compact structure or a gradient structure) and the thickness of the ceramic layer can be designed according to shock resistance requirements; the thickness of a metal layer can also be designed, and the metal layer exerts a bonding effect to allow the ceramic layer to only be cracked instead of being broken to pieces when the ceramic layer receives a shock, which enables the metal / ceramic multilayer composite to be capable of withstanding secondary shock; and the metal layer has good toughness and can hinder expansion of cracks, and the metal layer can generate great plastic deformation to absorb shock energy, which allows the material to have improved shock resistance.

Description

technical field [0001] The invention belongs to material science, and in particular relates to a preparation method of a high-energy impact-resistant metal / ceramic multilayer composite material. Background technique [0002] With the great increase of the warhead speed, high kinetic energy impact can be produced; and the addition of combustible components to the warhead will generate high combustion temperature, so that the warhead will produce high instantaneous kinetic energy impact (>300GPa) and extremely high surface temperature ( 2x10 4 K), the safety and security of battlefield personnel, vehicles, aircraft and equipment is facing great challenges. During high-energy impact, the high temperature on the surface caused by friction and the combustion of warhead components makes it difficult for metals to resist high-energy impact. Although ceramic materials are resistant to high temperatures, their brittleness makes them shatter upon impact, making it difficult to re...

Claims

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Application Information

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IPC IPC(8): B32B15/04B32B18/00
Inventor 成来飞张立同范尚武李良军刘小瀛陈博
Owner NORTHWESTERN POLYTECHNICAL UNIV
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