Boorikarbidin yleiskatsaus
Boron carbide is an important special ceramic with many excellent properties. Se löydettiin ensimmäisen kerran vuonna 1858, ja sen kovuus on luonnossa toiseksi vain timantin ja kuution boorinitridin jälkeen.
Erityisesti, lähes vakio korkean lämpötilan kovuus (>30GPa) on vertaansa vailla muihin materiaaleihin nähden, joten siitä on tullut tärkeä jäsen superkovien materiaalien perheessä.
Se on tärkeä kulutusta kestävä ja kovuus keraaminen rakennemateriaali uusien keramiikan joukossa ja sitä on käytetty laajalti siviiliteollisuudessa., aerospace and military fields.
The world’s boron resources are mainly distributed in Turkey, the United States, Russia, Chile, Kazakhstan and China.
ominaisuudet
The preparation includes hot pressing sintering, pressureless sintering, spark plasma sintering, microwave sintering, activation sintering, hot isostatic pressing sintering, and liquid phase sintering.Different sintering methods have their advantages and disadvantages. Which method to use for sintering boron carbide ceramics depends on the specific situation.
For the cutting of Boron Carbide, as a high-hardness material, many manufacturers use diamond wire loop for cutting. The Boron Carbide cutting video is for reference：
https://www.youtube.com/watch?v=asw2d6Ys2TM
hakemus
1. Bulletproof armor field
B4C ceramic has the characteristics of light weight, ultra-high hardness and high elastic modulus, which is the best material for bulletproof vests, bulletproof helmets and bulletproof loading fields.
2.Wear-resistant technology
Using the high hardness of B4C to prepare various nozzles, mortars, grinding rods and similar grinding devices; boron carbide devices are used as pneumatic slide valves, hot extrusion dies, journal bearings for nuclear power plant cooling systems; used in ceramic gas turbines corrosion-resistant and wear-resistant parts.
3.Nuclear energy
In the reactor core assembly, the neutron absorbing material is an important functional element next to the fuel element, and boron carbide is an important neutron absorbing material.
4.Thermocouple
The thermocouple prepared by the thermoelectricity of B4C can be used for the measurement and control of high temperature.
