NdB4

NdB4 is a ceramic compound in the rare-earth boride family, combining neodymium with boron in a specific stoichiometric ratio. This material is primarily of research and developmental interest rather than established in high-volume production, with potential applications in ultra-hard ceramics, wear-resistant coatings, and high-temperature structural applications where the combination of hardness and thermal stability is valuable. Engineers consider rare-earth borides as alternatives to conventional refractories and hard ceramics when exceptional performance under extreme conditions is required, though availability and cost typically limit adoption to specialized aerospace, grinding, and cutting-tool applications.