Boron carbonide ceramic is an integral component of new ceramics. With a high melting and hardness as well as low densities, wear resistance, corrosion resistance, and wear resistance it can be used in a variety of applications. It is extensively used in the fields of nuclear energy, bulletproof protection, and wear-resistant material.
Current research is expanding in depth and breadth on boron caride ceramics. Researchers are investing in advanced and practical sintering technology, as well as new techniques for synthesis of ultra-fine and high-purity boron carbide.
Ceramics boron carbide properties
Boron cadmium ceramics are extremely hard. Its microhardness equals diamond at 90-100gpa or CBN at 80-90gpa. Its grinding performance can exceed 60%-70% of a natural diamond. The material is very thermally stable due to its high acid-base resistance (4.5×10-6) and low coefficients of thermal expansion. 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 withstand the effects of air corrosion to 1000°C. However, it is very easy for it to react with oxygen in an oxidation atmosphere at higher temperature. Boron carbonide exhibits a strong resistance to acidity and alkali.
Preparation Boron Caride Ceramics
Boron sulfide ceramics can also be made by using different techniques. 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 furnace that burns or standard fire. 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 phases will begin to appear. Low temperatures 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 pressureless densification pure boron carbonide, ultrafine powder (3um) is necessary. 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 180min, had a relative density greater than 93%. Also, there is 298mpa strength in the boron ceramics, while the HTML4_ has a 344mpa strength.
Hot isostatic and discharge plasma are two other options for boron carbonide ceramics. However, these methods will not here be explained. Hot pressing however is a common 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 super-high hardness makes it a great choice.
bore carbide 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 or other aircraft with bulletproof armor materials. This material can effectively resist any shell damage. Boron Caride Ceramics are used in bulletproof clothing to protect the US military.
2. Wear-resistant technology
Different nozzles of B4C high hardness can be found in wear-resistant technology. Boron carbonide is used for polishing and fine grinding. It can also be used as an abrasive material to other hard materials such scemented carbide and engineering clays.
3. Thermoelectric couple
A temperature differential couple, capable of measuring 2200, was made using B4C’s thermoelectric characteristic. The temperature differential was sintered in Japan and Germany. It is used for control and measurement of high temperatures. 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.
Luoyang Trunnano Tech Co., Ltd., also known as TRUNNANO, is a Boron Carbide (B4C) Powder producer with more than 12 year experience in chemical products development. For high quality BoronCarbide b4C Powder please contact us .