The nature of the boron - 10 for stable price are relatively cheap and has good capability of neutron absorption in the nuclear reactor is often used as a neutron absorption shielding material In nature there are no free boron, artificial preparation of elemental boron is not stable, so the boron element always exists in the form of compounds In all kinds of boron compounds, boron carbide in the mass fraction of element B is relatively high.

Boron carbide has been widely used in the field of neutron absorption and shielding due to its stable physical and chemical properties, excellent neutron absorption capacity and relatively low price.