“…As it is well-known, transition metal boron shows high hardness, high melting point and strong abrasion resistance characteristics. Therefore, hard nanocomposite films based on transition metal boron like TiB 2 [4][5][6], ZrB 2 [7][8][9][10][11] have been widely investigated. The previous research demonstrated that incorporation of other materials and microstructure control is a good way to improve the mechanical properties of transition metal boron films further.…”