In everyone's impression, ceramics are brittle, and a piece of priceless ancient porcelain can be "shattered to pieces" in an instant. But did you know that ceramics have been "transformed" by modern technology. Because of their physical properties, they can act as bulletproof materials, which can be called a rising "new star" in the field of bulletproofing. There are many types of bulletproof ceramics that are widely used at present, including
alumina,
silicon carbide, boron carbide,
silicon nitride, and titanium boride. Among them, the most common are alumina, silicon carbide and boron carbide ceramics.
Silicon Carbide Ceramic Rods Tubes Nozzles and Plates
Just imagine, a small bullet on the battlefield can cause fatal damage to a soldier, but the fragile ceramic can block high-speed flying bullets. Where does its "power" come from? Next, let
Mingrui Ceramics, a professional manufacturer of alumina and silicon carbide ceramics, lead you into the world of bulletproof ceramics to find out.
High-strength and hard, composite armor bulletproof first choice
Bulletproof ceramics are a member of the family of inorganic non-metallic materials. Strictly speaking, it is not the same kind of material as the porcelain we use in our daily life. As advanced ceramics, different from the ceramic utensils that are fired in situ, the preparation of bulletproof ceramics requires a series of complex processes such as powder preparation, molding processing, and high-temperature sintering. It is the rapid development of modern technologies such as chemistry, metallurgy, and materials. product.
Bulletproof ceramics are bulletproof because of their extremely high hardness and strength. After the bullet hits the high-strength and high-hard ceramic, it will break and cause the ceramic to shatter. The whole process will consume most of the bullet's energy and form an "inverted pyramid" type of damage cone at the impact point. This is also the typical damaged morphology of ceramics after being shot.
Of course, due to the brittleness of ceramics, only relying on ceramics itself cannot be "foolproof". Bulletproof ceramics are generally placed on the bullet-facing surface, and should be bonded together with other backing materials to form composite armor for common use. The backing material is generally made of fiber-reinforced composite materials such as para-aramid or ultra-high molecular weight polyethylene. The main function is to absorb the remaining ballistic impact energy.
Low density and high strength make SiC stand out
In order to improve the multi-strike resistance of ceramics, high-strength fiber fabrics are often coated on the ceramic panels to prevent crack propagation caused by bombing. The combination of high-strength hard ceramic and rigid backing constitutes the basic structure of modern ceramic composite armor.
Silicon carbide (SiC) has a density of 2.7g/cm³, has the characteristics of high modulus value, high hardness and high specific strength, and still has high-strength bonding at high temperature. This structural feature gives silicon carbide ceramics excellent strength. , high hardness, wear resistance, corrosion resistance, high thermal conductivity, good thermal shock resistance and other properties, very suitable for ballistic protection, and silicon carbide ceramics are moderately priced and cost-effective, and are one of the high-performance armor protection materials with development potential. one.
Because under the same conditions, the weight of ceramics is much lower than that of metals. On military aircraft with very strict weight requirements, ceramic armor is widely used for the protection of key parts such as the belly, cockpit, and engine.
