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Armor of ceramic-metal composite and preparation method thereof

A technology of ceramic composite materials and metals, applied in the field of composite armor and its preparation, can solve the problems of fragmentation, missile impact damage, poor impact resistance, etc., and achieve strong penetration resistance, low manufacturing cost, and impact resistance good performance

Inactive Publication Date: 2008-04-09
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the brittleness of the ceramic material, the impact resistance is poor, and the impact on the missile is likely to cause damage or even fragmentation

Method used

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  • Armor of ceramic-metal composite and preparation method thereof
  • Armor of ceramic-metal composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Preparation of ceramic core plate 4 with orderly arranged channels:

[0028] (1) Ceramic forming: the molding process is adopted. Roll and mix ball mill (add absolute ethanol, ball mill for 36h), granulate (granulation glue contains 10% polyvinyl alcohol solution) and sieve (200 mesh) containing 95wt% Al 2 o 3 , 2.5wt% SiO 2 Alumina ceramic powder with 2.5wt% MgO is placed in a 60*60mm metal mold, the loading pressure is 5-10MPa, the pressure is kept for 15-30 seconds, and the thickness of the formed ceramic body is 7-8mm. The debinding process of the formed ceramic body adopts the process of slowly raising the temperature to 450°C, keeping the temperature for 2 hours, and cooling slowly. The molding process of the present invention is not limited to compression molding, and hot die casting, grouting, cold isostatic pressing, etc. can also be used.

[0029] (2) Pre-sintering: Pre-sinter the alumina ceramic body after debinding at 1000-1200° C. for 0.5-2 hours in ...

Embodiment 2

[0036] The process steps 1, 2, and 3 of this embodiment are the same as those in Example 1, and the process step 4 adopts vacuum heat treatment: put the cast aluminum alloy powder or block into the mold of the ceramic core plate 4 with a built-in pad, and then combine Put it in a vacuum furnace and heat it to 800°C, keep it warm for 40 minutes, and finally cool it slowly, take it out, and demould. At this time, the upper and lower thicknesses of the poured metal of the ceramic core board 4 are 10 mm and 20 mm, respectively, and then the metals on both sides are machined to have an upper and lower thickness of 8 mm.

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Abstract

The invention discloses a metallic / ceramic composite armor and preparation method with ordered supporting structure of metallic materials as a framework and alumina ceramic materials as a core, and comprises the following steps: (1) a ceramic core plate with well-ordered pore canals is prepared and comprises working procedures such as forming, first sintering, hole machining and final sintering; (2) the ceramic core plate is sintered and metallized, all the surfaces of the finally sintered ceramic core plate is coated with Mo-Mn metal pastes, after being dried, the finally sintered ceramic core plate is metallized and sintered by being put under a protective atmosphere; (3) the metal is poured or vacuum heating treatment is made, the metal material is heated into a molten state, then poured into a die in which the ceramic core plate is arranged to have a thermostatic treatment, and finally cooled slowly to knock out. The invention can overcome weak binding of articulated connection and plane connection between the metal and the ceramic, etc., and realize high-strength binding between metallic / ceramic interfaces, moreover, the prepared metallic / ceramic composite armor with the sandwiches which can pass mutually is provided with the performance of light weight, high strength and impact resistance, thereby being suitable for a bulletproof composite armor plate and an armored panel on tanks and armored vehicles, etc.

Description

technical field [0001] The invention relates to a composite armor and a preparation method thereof, in particular to a metal / ceramic composite armor and a preparation method thereof. Background technique [0002] Regarding the design of protective armor plates, there are mainly considerations of structural reliability, weight, and cost. In order to improve the survivability of tanks and armored vehicles in combat environments, homogeneous steel armor, ceramic composite armor and reactive armor have emerged one after another. For homogeneous steel armor, heavy armor is bound to affect the maneuverability and operating capability of the vehicle due to its thick steel layer and heavy weight; while light armor is likely to be penetrated by warheads. For reactive armor, on the one hand, it will cause additional damage to personnel or equipment inside and outside the armor during work, and will generate noise; on the other hand, its structure is more complicated, which affects it...

Claims

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Application Information

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IPC IPC(8): F41H5/04
Inventor 乔冠军刘桂武王红洁王继平杨建锋高积强卢天健金志浩
Owner XI AN JIAOTONG UNIV
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