Ion-Plasma Sputtering of AlMgB14 and AlMgB14–50 wt % TiB2 Antifriction Coatings.

AlMgB₁₄ and AlMgB₁₄–50 wt % TiB₂ coatings deposited onto a VK-8 hard-alloy substrate by ion-plasma sputtering using powder ceramic targets are studied. It is established that the formed coatings are characterized by an amorphous-crystalline structure containing B–B, B–O, and Ti–O interatomic bonds. The composition of the target has a minor effect on the morphology and roughness of the obtained coatings. The hardness of TiB₂-free coatings reaches 35 ± 2 GPa at the lowest friction coefficient of 0.12. It is established that the coatings formed using the AlMgB₁₄–50 wt % TiB₂ target possess higher adhesion strength and wear resistance. [ABSTRACT FROM AUTHOR]