Preparation technology of metal composite magnesium silicon carbide bulletproof ceramic

A composite magnesium silicon carbide and preparation technology, which is applied in the direction of protective equipment, offensive equipment, personnel protection equipment, etc., can solve the problems of complicated process, cumbersome process, increasing the difficulty of preparing bulletproof ceramics and production cost, etc., so as to reduce manufacturing cost, Excellent durability and lightweight effect

Active Publication Date: 2017-05-10
新乡市炬能耐材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is complicated and the process is cumbersome, which increases the preparation difficulty and production cost of bulletproof ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation process of metal composite magnesium silicon carbide bulletproof ceramics of the present invention, the production steps are as follows:

[0021] 1) Pre-mix metal aluminum, nano-alumina and ceria for later use;

[0022] 2) Using silicon carbide and high-purity sintered magnesia as the main raw materials, add an appropriate amount of phenolic resin and stir for 30-35 minutes, then add the mixed powder of metal aluminum, nano-alumina and cerium oxide mixed in advance, and stir for another 10-15 minutes. Prepare metal composite magnesium silicon carbide bulletproof ceramic powder;

[0023] 3) Put the prepared metal-composite magnesium silicon carbide bulletproof ceramic powder into a low-carbon steel jacket, use nitrogen as the medium, heat up the jacket by electromagnetic or resistance heating, and pressurize by hot isostatic pressing , heat preservation, to obtain the green body of the corresponding shape, and then obtain the desired shape of bulletproof...

Embodiment 2

[0025] The preparation process of metal composite magnesium silicon carbide bulletproof ceramics in this example differs from Example 1 in that in step 1), the mass ratio of metal aluminum, nano-alumina and cerium oxide is 1: (0.5-0.8) : (0.1-0.05), the purity of each component is as follows: Al content in metal aluminum ≥ 99%, Al in nano-alumina 2 o 3 Content ≥99.6%, CeO in cerium oxide 2 Content ≥ 99.999%.

Embodiment 3

[0027] The preparation process of the metal composite magnesium silicon carbide bulletproof ceramics of this embodiment differs from that of Example 2 in that: when preparing the mixed powder of metallic aluminum, nano-alumina and ceria, a certain amount of magnesium-aluminum alloy, The amount of aluminum alloy is not more than 30% of the amount of metal aluminum, and the Al content in magnesium-aluminum alloy is 47-53%.

[0028] Among them, the particle size of metal aluminum or magnesium aluminum alloy is 500 mesh; the particle size of nano-alumina is 40-80nm; the particle size of cerium oxide is 3-8μm.

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Abstract

The invention relates to a preparation technology of a metal composite magnesium silicon carbide bulletproof ceramic. The preparation technology comprises the following steps: 1) pre-mixing metal aluminium, nano alumina and cerium oxide for standby; 2) taking silicon carbide and high-purity sintering magnesium oxide as main raw materials, adding a proper amount of phenolic resin and stirring, adding pre-mixed mixed powder of metal aluminium, nano alumina and cerium oxide and stirring the material to prepare the metal composite magnesium silicon carbide bulletproof ceramic powder material; and 3) filling a low-carbon steel package sheathing with the metal composite magnesium silicon carbide bulletproof ceramic powder material, using nitrogen as a medium, employing an hot isostatic pressure mode for pressurization and insulation to obtain a base substrate having a corresponding shape, and obtaining the bulletproof ceramic with the required shape through linear cutting. According to the invention, metal aluminium and an aluminium magnesium alloy are introduced, nano alumina and cerium oxide are employed as a composite stabilizing agent, high purity sintering magnesium oxide substitutes practical silicon carbide, through heat isostatic compaction and sintering, so that the current bulletproof ceramic combines two processes of cold isostatic compaction and sintering as one heat isostatic compaction process.

Description

technical field [0001] The invention relates to a method for preparing bulletproof ceramics, in particular to a method for preparing metal composite magnesium silicon carbide bulletproof ceramics by using a hot isostatic pressing method. Background technique [0002] Bulletproof ceramics are widely used in the safety protection of military equipment and special operations such as coal and mines. In modern large-scale wars and the struggle against violence and terrorism, how to resist the damage of guns, cannons and missiles to military equipment and personnel is also very important. The application of bulletproof ceramics plays a key role in reducing casualties, improving combat effectiveness, and increasing victory factors. [0003] At present, the materials of bulletproof ceramics popular in the world mainly include Al 2 o 3 Bulletproof ceramics, silicon carbide bulletproof ceramics, etc., but these ceramics still cannot meet the needs of modern military in terms of lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/565C04B35/645F41H1/00
CPCC04B35/565C04B35/6455C04B2235/3206C04B2235/3217C04B2235/3229C04B2235/402C04B2235/48C04B2235/5418C04B2235/5436C04B2235/5454C04B2235/658C04B2235/96F41H1/00
Inventor 曾宪新曾庆洋王大军
Owner 新乡市炬能耐材有限公司
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