Alumina ceramic is a kind of high hardness, high wear resistant material, according to the different Al2O3 content, it can be divided into 99% alumina ceramic, 95% alumina ceramic, 96% alumina ceramic, 92% alumina ceramic and so on. The main characteristics are high temperature resistance, corrosion resistance, wear resistance and impact resistance, which are industrial grade special ceramics.Get more news about Bulletproof Alumina Ceramics,you can vist our website!
99% alumina ceramics can be used as bulletproof ceramics. Because of its high hardness and strength, when a bullet impact ceramic surface, it creates a powerful force of impact, the impact force extends to the ceramics and the bullet, and under the impact force, the ceramics break up slightly, resisting the penetration force of the bullet. Alumina bulletproof ceramics absorb the kinetic energy of bullet by micro-breaking, so as to achieve the function of bulletproof. Bulletproof ceramics are three to four times stronger than steel armor, providing much higher protection than steel armor.

The ceramic absorbs the kinetic energy of the projectile due to its rupture. Ceramic armor systems are composed of a single piece of ceramic or ceramic-metal composite covered with a high tensile strength organic fiber bonded nylon cloth layer.

The general development trend of armor materials is toughness, light weight, multi-function and high efficiency. Ceramic material is an important part of bulletproof material, it has high hardness and wear resistance, high compressive strength and excellent ballistic performance under high stress. Bulletproof ceramics require many properties, such as: density and porosity, hardness, fracture toughness, Young's modulus, speed of sound, mechanical strength, etc. None of the properties can have a direct and decisive relationship with the overall anti-ballistic performance, so the fracture mechanism Very complex, crack formation is caused by many factors, and the time of occurrence is very short. The porosity of bulletproof ceramics should be as low as possible to improve hardness and Young's modulus. For Al2O3 ceramics, the porosity should be close to zero, and the water absorption should not exceed 0.02%. The hardness of ceramics is very high, which should be higher than that of flying warheads. For Al2O3 ceramics, the hardness Hv should exceed 1220-1250. The speed of sound propagation in ceramics indicates the ability of the ceramic to dissipate energy on the impact surface. A high sound speed indirectly indicates that the ceramics have good densification and low closed pores.