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Metal ceramic composite dot matrix armor with three-dimensional constraint structure as well as preparation method and application thereof

A technology of restraint structure and cermet, applied in the direction of armor plate structure and other directions, can solve problems such as uneven anti-elastic performance, and achieve the effects of shortening preparation time, simplifying preparation process, and improving work and production efficiency

Active Publication Date: 2020-02-04
NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The three-dimensional constrained structure has excellent penetration resistance, impact resistance and caving resistance, but there is inhomogeneity in the anti-ballistic performance

Method used

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  • Metal ceramic composite dot matrix armor with three-dimensional constraint structure as well as preparation method and application thereof
  • Metal ceramic composite dot matrix armor with three-dimensional constraint structure as well as preparation method and application thereof
  • Metal ceramic composite dot matrix armor with three-dimensional constraint structure as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] The preparation methods of existing composite armor are mainly divided into:

[0039]1) Component hot pressing integration method, the metal panel, backplane, and metal frame are pre-processed and formed, and the ceramic block is also pre-sintered, and then the metal frame is placed on the back plate, and the ceramic blocks are placed in the metal frame respectively. Finally, the panel is covered and sintered to make the metal and ceramics tightly bonded. However, in this preparation method, the ceramic body must first be prepared through a sintering process of hot pressing or hot isostatic pressing, and the metal frame and the ceramic must ensure strict size matching. In addition, a hot isostatic pressing process is required to closely bond the metal and ceramics, so the cost of the entire preparation process is extremely expensive.

[0040] 2) Ceramic powder sintering method

[0041] Pre-process the metal panel, back plate, and metal frame, then place the metal fram...

Embodiment 1

[0045] The ceramic powder is placed in the mold, and the trapezoidal ceramic column and the double trapezoidal ceramic column are prepared under the action of loading pressure;

[0046] Process the hollow graphite frame, according to the size of the ceramic special-shaped columns and the arrangement of the ceramic special-shaped columns, support the hollow frame body;

[0047] Inserting the two ends of several ceramic special-shaped columns into two graphite frames respectively, assembling the assembly, putting the assembled assembly into a crucible, and then pouring metal powder into the gap between several ceramic special-shaped columns; and The crucible is put into the vibrating sieve, so that the powder can enter the void of the ceramic more fully.

[0048] Put the powder-infused assembly into a sintering furnace, slowly heat up to 1650°C over 15 hours, then keep it warm for 10 minutes, and then cool down naturally to obtain a cermet composite lattice armor plate with a th...

Embodiment 2

[0054] Penetration resistance, impact resistance and avalanche resistance tests were tested using the drop weight method. The composite lattice armor plate prepared in Example 1 was tested. The obtained test results showed that the joint surface of metal and ceramics had a certain strength, which was comparable to that of The drop weight method gave similar or better results than conventional gluing. Adhesive method is a traditional preparation method of metal and ceramics, see "Bonding Method of Ceramics and Metals" for details.

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Abstract

The invention relates to a metal ceramic composite dot matrix armor with a three-dimensional constraint structure as well as a preparation method and application thereof. The metal ceramic composite dot matrix armor comprises a plurality of ceramic special-shaped columns and a metal alloy material, wherein the plurality of ceramic special-shaped columns are arranged in a regular array, the metal alloy material is filled in the gap between the ceramic special-shaped columns, and the outer surface of the armor is covered with the metal alloy material. The preparation method comprises the following steps that the plurality of ceramic special-shaped columns are regularly arranged, then metal alloy powder is filled between the ceramic special-shaped columns, and sintering is carried out integrally. According to the metal ceramic composite dot matrix armor, the thermal vibration stability performance is improved. The problem of insufficient elasticity of the three-dimensional constraint structure is solved, and the preparation process is simple. The ceramic special-shaped column and the hollow structure of a graphite frame are matched, so that the assembly can be directly completed; andthe design of the shape is started from the anti-elasticity capability, when the elastic pressure is generated, the ceramic special-shaped columns cooperate with each other, the deformation can be better recovered, and the anti-elasticity capability is improved.

Description

technical field [0001] The invention belongs to the technical field of armor material preparation, and in particular relates to a metal-ceramic composite lattice armor with a three-dimensional restraint structure and a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The preparation methods of the existing armor materials are complex and expensive, and the thermal shock resistance of ceramic materials is poor. [0004] Armor materials include aluminum alloy armor, titanium alloy armor, ceramic material armor, and composite material armor. Composite materials include ceramics, fiber materials and other non-metallic materials. The ...

Claims

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Application Information

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IPC IPC(8): B22F7/08B22F3/10F41H5/02
CPCB22F3/10B22F7/08F41H5/02
Inventor 王荣梁秀兵陈永雄胡振锋胡海韵
Owner NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI