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VOLUME 100 | ISSUE 10 | PAGE 766
Ultra-hard AlMgB14 coatings fabricated by RF magnetron sputtering from a stoichiometric target
Abstract
For the first time hard aluminium magnesium boride films were fabricated by RF magnetron sputtering from a single stoichiometric ceramic AlMgB14 target. Optimized processing conditions (substrate temperature, target sputtering power and target-to-substrate distance) enable fabrication of stoichiometric in-depth compositionally homogeneous films with the peak values of nanohardness 88 GPa and Young's modulus 517 GPa at the penetration depth of 26 nm and, respectively, 35 and 275 GPa at 200 nm depth in 2 μm thick film.