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High-toughness aluminum oxide based bulletproof ceramic and preparation method thereof

An alumina, high-toughness technology, applied in ceramic products, other household appliances, applications, etc., can solve the problems of low density, difficult to combine bulletproof ceramic armor materials, limited improvement of ceramic fracture toughness, etc., to reduce density, improve Mechanical properties, the effect of preventing material damage

Active Publication Date: 2018-11-13
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current toughening methods are not effective for Al 2 o 3 The improvement of ceramic fracture toughness is limited, and it is difficult to meet the performance requirements of low density, high strength and high hardness of bulletproof ceramic armor materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-toughness alumina-based bulletproof ceramic and a preparation method thereof. Using 90-95 parts by mass of alumina micropowder and 5-10 parts by mass of silica micropowder as raw materials; first dissolving 0.1-4 parts by mass of soluble salt in 4-7 parts by mass of water to obtain a salt solution; placing the raw materials, the salt solution and 1-3 parts by mass of a binder in a planetary ball mill, and mixing them uniformly to obtain a mixture; machine-pressing the mixture under the condition of 100-130 MPa to obtain a green body; Then the green body is dried at 150-200°C for 12-24 hours, and kept at 1600-1700°C for 4-8 hours to prepare high-toughness alumina-based bulletproof ceramics.

[0022] The soluble salt is one of aluminum chloride, aluminum nitrate, magnesium chloride, magnesium nitrate, magnesium sulfate, zirconium tetrachloride, zirconium oxychloride, zirconyl nitrate, zirconium sulfate, ammonium zirconium carbonate, zirconium nitrate and titanium c...

Embodiment 2

[0026] A high-toughness alumina-based bulletproof ceramic and a preparation method thereof. Using 90-95 parts by mass of alumina micropowder and 5-10 parts by mass of silica micropowder as raw materials; first dissolving 0.1-4 parts by mass of soluble salt in 4-7 parts by mass of water to obtain a salt solution; placing the raw material, the salt solution and 1-3 parts by mass of a binder in a planetary ball mill, and mixing them uniformly to obtain a mixture; machine-pressing the mixture under the condition of 120-150 MPa to obtain a green body; Then, the green body is dried at 110-160°C for 24-36 hours, and kept at 1700-1800°C for 1-5 hours to prepare high-toughness alumina-based bulletproof ceramics.

[0027] The soluble salts are aluminum chloride, aluminum nitrate, magnesium chloride, magnesium nitrate, magnesium sulfate, zirconium tetrachloride, zirconium oxychloride, zirconyl nitrate, zirconium sulfate, ammonium zirconium carbonate, zirconium nitrate and titanium chlori...

Embodiment 3

[0031]A high-toughness alumina-based bulletproof ceramic and a preparation method thereof. Using 90-95 parts by mass of alumina micropowder and 5-10 parts by mass of silica micropowder as raw materials; first dissolving 0.1-4 parts by mass of soluble salt in 4-7 parts by mass of water to obtain a salt solution; placing the raw materials, the salt solution and 3-5 parts by mass of a binder in a planetary ball mill, and mixing them uniformly to obtain a mixture; machine-pressing the mixture under the condition of 100-130 MPa to obtain a green body; Then the green body is dried at 150-200°C for 12-24 hours, and kept at 1600-1700°C for 4-8 hours to prepare high-toughness alumina-based bulletproof ceramics.

[0032] The soluble salts are three of aluminum chloride, aluminum nitrate, magnesium chloride, magnesium nitrate, magnesium sulfate, zirconium tetrachloride, zirconium oxychloride, zirconyl nitrate, zirconium sulfate, ammonium zirconium carbonate, zirconium nitrate and titaniu...

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Abstract

The invention relates to high-toughness aluminum oxide based bulletproof ceramic and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: taking 85 to 95 parts by mass of aluminum oxide micro-powder and 5 to 15 parts by mass of silicon dioxide micro-powder as raw materials; firstly, dissolving 0.1 to 8 parts by mass of soluble saltin 4 to 10 parts by mass of water, so as to obtain a salt solution; then putting the raw materials, the salt solution and 1 to 5 parts by mass of binding agent into a planetary ball mill; uniformly mixing to obtain a mixture; carrying out machine pressing and molding on the mixture under the condition of 100 to 150MPa so as to obtain a raw blank; then drying the raw blank for 12 to 36 hours underthe condition that the temperature is 110 to 200 DEG C; carrying out heat insulation for 1 to 8 hours under the condition that the temperature is 1,600 to 1,800 DEG C, so as to prepare the high-toughness aluminum oxide based bulletproof ceramic. The high-toughness aluminum oxide based bulletproof ceramic prepared by the invention has the characteristics of high strength, high rigidity, high toughness and relatively low volume density.

Description

technical field [0001] The invention belongs to the technical field of alumina-based bulletproof ceramics. In particular, it relates to a high-toughness alumina-based bulletproof ceramic and a preparation method thereof. Background technique [0002] Bulletproof armor material is one of the indispensable key materials in modern military warfare. Its performance directly restricts the combat capability of military equipment. The development of high-performance bulletproof armor material is of great significance to national defense construction. [0003] In order to have excellent penetration resistance, impact resistance and caving resistance without causing a huge impact on the mobility of military equipment, bulletproof armor materials are usually required to have high hardness, high toughness, high strength and low density. The bulletproof armor materials used in the early days are traditional high-strength steel, aluminum alloy, titanium alloy and other metal materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/10C04B35/622C04B35/626
CPCC04B35/10C04B35/622C04B35/62605C04B38/0025C04B2235/3418C04B2235/442C04B2235/443C04B2235/444C04B2235/448C04B2235/77C04B2235/96C04B38/0067C04B38/0054
Inventor 付绿平顾华志黄奥张美杰倪红卫
Owner WUHAN UNIV OF SCI & TECH