Hafnium boride is primarily used in high-temperature environments due to its exceptional thermal stability and resistance to oxidation. It is commonly applied as a coating material for components in aerospace and defense industries, such as rocket nozzles and thermal protection systems, where it can withstand extreme heat and mechanical stress. Additionally, its high hardness and wear resistance make it suitable for use in cutting tools and wear-resistant coatings. In the field of nuclear energy, hafnium boride is utilized as a neutron absorber in control rods, helping to regulate nuclear reactions. Its electrical conductivity also enables its use in electronic applications, particularly in high-temperature electrodes and sensors.