Abstract
Friction behavior under different operating conditions, such as normal forces, relative velocities, and length scales of the textured surfaces, is a crucial topic in tribology. In this study, different tribology mechanisms of micro/meso/macroscopic textured surfaces were investigated, considering the effects of asperities and operating conditions. A prediction model of the friction coefficient was proposed and validated for polished and microscopic, mesoscopic, and macroscopic textured surfaces. Subsequently, reciprocating sliding friction experiments (sphere-on-plate) were carried out to estimate the friction coefficients of the specimens in contact with an aluminum sphere (Al 99.9). The results indicate that a larger normal force, relative velocity, and length scale produce more wear debris, which transforms the friction mode from adhesive friction to abrasive friction.
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