The particle size, particle size distribution, shape and purity of the original boron carbide powder have great influence on the microstructure and properties of the products.

Pure boron carbide is usually prepared by solid state sintering. It has been found that the activation of crystal and volume diffusion can be improved by adding sintering additives to raise the defect density or dislocation density.

The main reasons affecting the density of boron carbide ceramics are sintering temperature and powder size. The smaller the particle size of the powder, the larger the specific surface area, the greater the driving force of sintering. At the same time, the finer the powder, the more structural defects in the preparation process, the higher the sintering activity, which can promote sintering and densification.

With the development of sintering technology, the excellence of boron carbide ceramics is becoming more and more prominent. Its products have special use value in the working environment of high temperature, high speed and strong corrosion, which are often encountered by modern engineering technology, and have potential applications in many fields.