WHAT’S THE APPLICATION BORON CARBIDE B4C ?
1. Application of boron carbide in nuclear industry
Boron carbide has a high neutron absorption cross-section and a wide neutron absorption spectrum. It is often used as a neutron absorption material in nuclear reactors. Among them, the thermal cross section of boron-10 isotope is as high as 347×10-24cm2, second only to a few elements such as gadolinium, samarium, and cadmium. It is an efficient thermal neutron absorber. In addition, boron carbide has rich resources, corrosion resistance, good thermal stability, no radioactive isotope, and low secondary ray energy. Therefore, boron carbide is widely used as a control material and shielding material in nuclear reactors. Grossman et al. applied boron carbide ceramic coatings to the nuclear industry and achieved quite good results.
2. Application of boron carbide in materials
Boron carbide is widely used in materials: Boron carbide is used as an abrasive for grinding and polishing of engineering ceramics, gemstones, cemented carbide, etc.; boron carbide has high hardness and can be used to make sandblasting nozzles and nozzles for high-pressure water jet cutting; carbonization Boron has good corrosion resistance and stable chemical properties. It can be used to make the tip of a flow transmitter for rocket liquid engine fuel or as a corrosion-resistant and friction-resistant device in ceramic gas turbines; boron carbide has good stability and thermal conductivity for molten iron , Can be used as a continuous casting mold in the machinery industry. In addition, the application of boron carbide in coating materials: boron carbide has high hardness, wear resistance, radiation resistance, chemical stability, and can be used to make amorphous boron carbide coated tools.
3. Application of boron carbide in electrical properties
Using the thermoelectric properties of boron carbide, boron carbide/graphite thermocouples can be prepared.
4. Application of boron carbide in chemical raw materials
After being activated by halogen, boron carbide powder can be used as a boronizing agent for steel or other alloys. Boronizing on the surface of the steel produces a thin layer of iron boride to enhance the strength and wear resistance of the material. Boron carbide has high hardness and high grinding ability. Adding it to metal-based friction materials can greatly increase the friction coefficient of the material and have a positive impact on the performance of high-energy braking materials.
Boron carbide can divide into 4 parts.
- group size sand like 1-3mm 3-5mm 5-8mm
- sieving fine powder like 60mesh-0,325mesh-0
- F-macrogit in cluding F8-F220
- F-MICROGRIT INCLUDING F230-F2000