Structural features and tribological properties of multilayer high-temperature plasma coatings

OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 26 No. 3 2024 Ta b l e 2 Results of instrumented microindentation of coating A at a maximum load on the indenter of 980 mN (100 g) Areas of analysis HM, GPa (±34) HIT, GPa (±43) HV (±41) E*, GPa (±10.7) hmax, μm (±0.34) hp, μm (±0.31) h1, μm (±0.34) Metal layer (1) 722.6 1090.0 1030 208.8 2.3 1.5 2.2 Transition layer (2) 500.6 686.7 650 173.7 2.8 1.9 2.6 Oxide layer (3) 258.3 305.7 290 150.5 3.9 3.3 3.6 Ta b l e 3 Plasticity parameters for coating A Areas of analysis Rе, % φ, % CIT, % Metal layer (1) 35 65 4.5 Transition layer (2) 31 67 6.5 Oxide layer (3) 15 84 8.4 Ta b l e 4 Results of instrumented microindentation of coating B at a maximum load on the indenter of 980 mN (100 g) Areas of analysis HM, GPa (±34) HIT, GPa (±43) HV (±41) E*, GPa (±10.7) hmax, μm (±0.34) hp, μm (±0.31) h1, μm (±0.34) Metal layer (1) 579.7 787.6 745 199.0 2.7 1.5 2.4 Transition layer (2) 477.2 616.4 580 164.5 2.9 1.6 2.7 Oxide layer (3) 264.2 306.5 290 140.0 3.9 2.7 3.5 Ta b l e 5 Plasticity parameters for coating B Areas of analysis Rе, % φ, % CIT, % Metal layer (1) 44 70 6.6 Transition layer (2) 43 73 7.4 Oxide layer (3) 28 81 8.9 Determination of tribological properties under sliding friction conditions The most important requirement for the coatings analyzed in this work is resistance under wear conditions. Tests under sliding friction conditions made it possible to identify general regularities in the behavior of specimens under external loading and form recommendations for its application in real operating conditions [20–22].

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