Dry Friction Between Laser-Patterned Surfaces: Role of Alignment, Structural Wavelength and Surface Chemistry

摘要: The ability to tune friction by tailoring surface topographies at micron length scales and changing the relative orientation of crystallites atomic scale is well established. Here, we investigate if two concepts combine, i.e. surfaces affects dry between laser-textured surfaces. Laser patterning was used on austenitic stainless steel substrates tribometer testing balls made 100Cr6 create linear periodic arrays with different structural wavelengths or periodicities (5, 9 18 μm). Pairing each substrate a ball same periodicity, were subjected sliding tests 0°/90° alignment patters. We observe that reduces after running-in. reduction increases decreasing wavelength also depends sensitively chemistry Our results highlight possibility tailored contacting geometries leading tunable frictional properties.