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Application of hot pressing sintering of boron carbide
1. The field of bulletproof armor
Due to the characteristics of lightweight, ultra-high hardness and high elastic modulus, B.C. ceramics are the best materials for bulletproof vest, bulletproof helmet and bulletproof armor. Since the 1960s, boron carbide ceramics have been applied as ceramic armor materials.Compared with other bulletproof materials (such as SiC, Al,O,), B.C. ceramics are lighter and harder, especially suitable for use as bulletproof armor materials for helicopter gunships and other aircraft, which can effectively resist shells.
2. Wear-resistant technology field
In wear-resisting technology and engineering, the use of B, C of high hardness of the preparation of the nozzle, used for ship hull derusting desander water cut with high pressure jet nozzle and nozzle, b. C nozzle used in harsh conditions life expectancy, dozens of times higher than the ALO nozzle life, than the SiC and WC nozzle is also much longer service life, high cost performance, is the best choice for sandblasting processing industry.
3. Nuclear energy
In the reactor core components, neutron absorption materials (the control rods, regulating rod, accident, safety rods, shielding rods) is second only to the most important function of fuel element, due to their high neutron absorption cross section of boron carbide, absorption spectrum width, low prices, abundant raw material sources, after absorbing neutrons have no strong ray secondary radiation, which is easy to waste.So boron carbide is an important neutron absorbing material.
4.Thermocouple
Using the thermoelectricity of B and C, the thermoelectric couple which can measure 2200 C was prepared by sintering in Japan and Germany, which is used for the measurement and control of high temperature.Its high thermoelectric properties and stability make it reliable for long – term use, repeated temperature measurements.The boron carbide/graphite thermocouple consists of a graphite tube, a boron carbide rod, and a boron nitride bush between them.