Boron carbonide ceramic is an indispensable part of all new ceramics. With a high melting and hardness level, low density, wear resistance, corrosion resistance, and high melt point, it’s an important ingredient. It is used widely in the fields of nuclear energy, bulletproof protection, and wear-resistant material.
Current research is expanding in depth and breadth on the boron caride ceramics. Researchers are also taking an active role in the advancement of practical, high-purity sintering techniques.
Ceramics boron carbide properties
Boron cadmium ceramics are extremely hard. Its microhardness averages 50000mpa or 50gpa. This is in addition to diamond (90–100gpa), CBN (80-90gpa), as well as CBN (90-90gpa). Its grinding efficiency may reach 60-70 percent of a natural diamond. The material is very thermally stable due to its high acid-base resistance (4.5×10-6), as well as its small coefficient for thermal expansion (4.5×10-6). The ability to absorb thermal neutron qualitatively is possible, however it does not have a strong impact on resistance or high brittleness.
Boron carbide can resist corrosion by air at 1000°C. However, it is very easy to oxidize when exposed to oxygen at higher temperatures. Boron carbonide exhibits a strong resistance to acidity and alkali.
Preparation Boron Caride Ceramics
Boron sulfide ceramics might be achieved by different means. It is usually used for dense B4C.
B4C produced by hot pressing sintering is capable of reaching 98% density. It is possible to prepare it in a conventional fiery pressing furnace, or in a vacuum burning press furnace. The temperature at which the press is heated is 2100.
A weak thermal shock resistant of B4C means that cooling must be gradual. You should keep the hot pressing temperature at an acceptable level. At 2150 the B4C–C Eutectic Liquid Phase will begin to form. A lower temperature will cause the product’s density to drop. You can obtain Boron carbide-ceramic products of high density and hardness by using the B4C superfine powder.
It is possible to do hot pressing without sintering. These requirements are high for pressureless, sintering carbide powder at a very low temperature. For the densification pure boron caride using pressureless, sintering, it is essential that you use ultrafine powder (3um) and have enough oxygen. It is possible to sinter at temperatures between 2250-2350
It is possible to use additives to make pressureless intersintering more efficient. These additives can be used to dissolve the oxide layer ofboron carbide, increase the volume diffusion and activation of grain boundaries, or to reduce the temperature to a lower temperature (2200-2200 ). It was found that Al or Si, when used as sintering materials, sintered at 2050, atmospheric pressure, for 180 min, had a relative density greater than 93%. Also, there is 298mpa strength in the boron ceramics , while the has a 344mpa strength.
Hot isostatic pressing, discharge plasma and hot Isostatic pressing are both available for Boron carbide Ceramics. They will not however be covered in this article. Hot pressing however is an acceptable method of preparing pure boron caride ceramics.
Application to boron carbonide ceramics
1. An armor field that is bulletproof
B4C is the ideal material to make a helmet, bulletproof vest or armor. Its lightweight and extremely high hardness makes it a great choice.
boron caride ceramics currently are used extensively in ceramic armor materials. B4C Ceramics are more lightweight and difficult to handle than bulletproof materials. It’s ideal for arming helicopters, as it can resist the shells. Boron Caride Ceramics are used in bulletproof clothing to protect the US military.
2. Wear-resistant technology
Different nozzles of high hardness B4C can be found in engineering and wear-resistant technologies. Boron carbonide is used for polishing and fine grinding. It can also be used as an abrasive material to other hard materials, like engineering ceramics or cemented caride.
3. Thermoelectric couple
The thermoelectric property B4C made it possible to make a temperature difference couple which can measure 2200. You can use it repeatedly because of its thermal electricity and stability.
Boron carbonide ceramics, which have many wonderful properties, is very significant and widely used. Future plans will see it grow.
Lemondedudroit advancedmaterial Tech Co., Ltd., (Lemondedudroit), has over 12+ years of expertise in chemical products research, development, and manufacturing. Contact us to receive high-quality Boron Carbide B4C Pulver.