Synthesis of Boron Carbide Nanopowder

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Boron carbide is a hard and durable material that can be used for a number of applications. It is also an excellent abrasive that is used in cutting tools and dies for a number of different purposes.

The synthesis of boron carbide nanopowder is one of the most important and interesting issues in the research of BNCT compounds [5-6]. It has a large market potential, but it is difficult to produce a sufficient quantity due to its high price and high purity requirements.

Several methods of synthesizing boron carbide have been developed. The first method involves the esterification of boric acid and 2-hydroxybenzyl alcohol, which produces a polymer, such as phenolic resin. The resulting polymer is then heated up to 1500degC under an argon flow.

Another method of synthesizing boron carbide uses an industrially produced precursor. This precursor has a low boron content (proportion 4:7) and is composed of rhombohedral alpha boron, tetragonal boron, and a small amount of boric acid.

To achieve the best results for boron carbide synthesis, it is crucial to select the correct precursors. The molar ratio of boron to carbon in the precursor determines the obtained morphology and aggregation of powders. It is also necessary to ensure that the synthesis temperature does not exceed 1200-1300 degC.

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