Aluminum Oxide Ceramic Armor

Al2o3 ceramic is a heavy duty material combination ensures maximum durability and protection.

Aluminum oxide ceramic armor.

These plates are constructed of a multilayer matrix composed of aluminum oxide tiles and an ultra high molecular weight polyethylene backing plate. Al2o3 aluminum oxide is an exceedingly hard compound made up of aluminum and oxygen. Ceramtec offers a wide range of material types with different property profiles that can be adjusted via a targeted matrix design. Three compositions 92 96 and 99 wt al 2 o 3 were tested for 10 mm thick plates processed in an industrial plant.

With a mohs hardness of 9 aluminum oxide is a high strength wear resistant material possessing a strong ability to resist vigorous chemical attacks such as acid and alkali at extreme temperatures. These plates produce practically no spall as the ceramic tiles shatter the bullet and the uhmwpe backing plate catches all the fragments. Ceramic trauma plates aren t exactly cheap. It s extremely strong the definition of a 9 10 on the mohs scale.

Alumina ceramic armor is readily available to most civilians in jurisdictions where it is legal but is not considered military grade. Crystallized aluminum oxide better known as corundum is a surprisingly feasible armor choice. Polycrystalline aluminum oxide is an armor ceramic material that is used in opaque armor systems. Examples of applications for aluminum oxide al 2 o 3 advanced ceramics are heavy duty forming tools substrates and resistor cores in the electronics industry tiles for wear protection and ballistics thread guides in textile engineering seal and regulator discs for water taps and valves heat sinks for lighting systems protection tubes in.

Normal steel has a hardness of 4 4 5 and hardened steel has a hardness of 7 5 8. Aluminum armor is plausible in the form of corundum. The aim of this work is to present results of mechanical characterization and ballistic test of alumina based armor plates. Alumina al2o3 due to its excellent price performance ratio alumina al2o3 ceramics are predestined for many technical applicationsand the most widely used oxide ceramic material kol18 its low costs are due to the high availability of aluminum 3rd most common element in the earth s crust and the cost effective preparation and sintering processes.

These plates are rated to stop up to 30 06 armor piercing rounds. The most well known oxide ceramic material alumina or aluminum oxide al 2 o 3 in its various levels of purity is used more often than any other advanced ceramic material. Typical chemical compositions alumina. Combat vehicle armour progress thus against 7 62mm bullets the steel aluminium combination has em 1 2 to 1 3 whereas aluminium armour faced with aluminium oxide ceramic tiles has em 2 3 to 2 8.

There are both coarse and fine grained varieties. Samples were pressed at 110 mpa and sintered at 1600 c for 6 x2009 h.