Now, bulletproof armor has became a target of developed countries for competitively developing arms such as tank and helicopter, and body armor in military field. Bulletproof armor made of boron carbide ceramic is the best bulletproof material so far. With properties of high hardness, strong strength, good toughness and small specific gravity, it is specially suitable for the use in light bulletproof armor, now the application of which to defend structures covering plane, tank, ship, vehicle and human body is very wide.