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increase impact strength of boron carbide ceramic

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Because boron carbide is highly rigid, lightweight, and difficult to destroy, it is ideal for body armor, and these inherent advantages make body armor very comfortable for soldiers, police, security personnel, and others.

Although boron carbide ceramic can effectively resist the impact of pistol bullets, smoothbore bullets and slower rifle bullets, it still has a very prominent problem – when the boron carbide material is driven at speeds above 900 m/s (2,950 ft/s) A phase transition occurs when an object hits, causing its strength to drop significantly

The M855 5.56mm bullet has a burr velocity of up to 3,113 ft/s, and while this velocity drops rapidly at higher ranges, at shorter ranges, like the M855 bullet, it activates the phase transition of boron carbide body armor.The wearer man has the risk of body armor failure.

Boron carbide armor was used to make individual body armor of the U.S. Army from the 2000s to the early 2010s, but boron carbide armor plates cannot effectively resist the attack of high-speed bullets. By adding silicon to the boron carbide armor, the phase transition of the material can be reduced by about 30%, thus effectively addressing this inherent disadvantage.