Along with the development of nuclear technology and nuclear industry, it was found that boron carbide has high thermal neutron absorption ability, the capture cross section is high, wide capture spectroscopy, second only to a few elements, such as gadolinium, samarium, cadmium and boron carbide manufacturing cost is low, the decay when generating radioactive isotope, the secondary radiation energy is low, and high temperature resistant, resistant to radiation, Therefore, it has attracted more and more attention in nuclear reactors and nuclear shielding materials.

Boron carbide coatings are used in many fusion devices around the world. The main reason for using boron carbide coating as the first wall material is that boron carbide is resistant to high temperature and will not be ionized in the plasma due to sputtering and bubbling caused by local high temperature in the first wall. Boron carbide is resistant to corrosion. Boron carbide is resistant to hydrogen ion corrosion and reduces hydrogen cycling, making it an ideal material for the first wall.