B4C ceramics are a material with a variety of excellent properties, which are widely used in the fields of national defense, nuclear energy and wear-resistant technology. It has low density, high hardness, high modulus of elasticity, corrosion resistance, wear resistance, good neutron absorption properties, and good high-temperature semiconductor properties.
First of all, in the field of bulletproof armor, B4C ceramics are widely used in bulletproof vests, bulletproof helmets, and bulletproof armor. Due to its lightweight, ultra-high hardness and high modulus of elasticity, B4C ceramics are the best material choice. Compared to other bulletproof materials, B4C ceramic is lighter and harder, making it particularly suitable for the bulletproof armor of helicopter gunships and other aircraft, and can effectively resist artillery shells. For example, boron carbide ceramics produced by the advanced ceramics branch of BAE Systems in the United Kingdom have been used in the US military"Interceptor"Body armor.
Secondly, in the field of wear-resistant technology, the high hardness of B4C ceramics makes it an ideal material for the preparation of various nozzles. These nozzles can be used for desander nozzles for hull rust removal and for high-pressure jet water cutting. In addition, boron carbide can be used as an abrasive material in the polishing, grinding or crushing of cemented carbide and engineering ceramics, replacing traditional diamond abrasives, thereby reducing the cost of the grinding process.
In the field of nuclear energy, B4C ceramics are widely used as neutron absorbing materials in reactor core components. These materials include control rods, adjustment rods, accident rods, safety rods and shielding rods, which are important functional elements after fuel elements. Boron carbide has the advantages of high neutron absorption cross-section, wide absorption energy spectrum, low and abundant raw materials, and has no strong secondary radiation after neutron absorption, and is easy to dispose of waste, so it has become an important neutron absorbing material.
In addition, B4C ceramics can also be used for thermocouples. Taking advantage of its thermoelectric properties, thermoelectric couples capable of measuring up to 2200 °C have been prepared in Japan and Germany for high-temperature measurement and control. Its high thermoelectric properties and stability enable long-term and reliable temperature measurement with repeatable measurements.
In summary, B4C ceramics have a variety of excellent properties and play an important role in the fields of defense, nuclear energy and wear-resistant technology. Its low density, high hardness, high modulus of elasticity, corrosion resistance, wear resistance, good neutron absorption properties, and high-temperature semiconductor properties make it an ideal material for a variety of applications.