LaB4

LaB₄ is a lanthanum-boron ceramic compound belonging to the rare-earth boride family, characterized by a hexagonal crystal structure and extreme hardness. This material is primarily investigated in research contexts for high-temperature applications, cutting tools, and wear-resistant coatings, where its thermal stability and mechanical properties at elevated temperatures offer advantages over conventional carbides and oxides. While not yet widely deployed in high-volume industrial production, LaB₄ represents an emerging alternative in the rare-earth boride family for specialized applications demanding exceptional hardness and thermal performance in demanding environments.