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This study reports that small amounts of MoO_3 multilayer ribbon crystal(MoO_3MLRC) in Ni_3Al intermetallics showed the decreased friction coefficients and improved wear resistance at different contact loads. Specifically, the friction coefficients(0.32–0.34) and wear rates [(2–4) × 10~(-5)mm3N~(-1)m~(-1)] are significantly reduced for Ni_3Al at 2–8 N. A possible explanation for the friction and wear reduction is that MoO_3 MLRC as a multilayer material shears easily in the tribo-layer during the sliding contact, and provides low friction. In addition, this MoO_3 MLRC with excellent bending strength is found to dissipate shear stress and suppress severe plastic deformation under a cyclic stress, thus drastically improving wear resistance of Ni_3Al.
This study reports that small amounts of MoO_3 multilayer ribbon crystal (MoO_3MLRC) in Ni_3Al intermetallics showed the decreased friction coefficients and improved wear resistance at different contact loads. Specifically, the friction coefficients (0.32-0.34) and wear rates [(2-4) × 10 ~ (-5) mm3N ~ (-1) m ~ 1] are significantly reduced for Ni_3Al at 2-8 N. A possible explanation for the friction and wear reduction is that MoO_3 MLRC as a multilayer material shears easily In addition, this MoO_3 MLRC with excellent bending strength is found to dissipate shear stress and suppress severe plastic deformation under a cyclic stress, thus drastically improving wear resistance of Ni_3Al.