Details

Autor(en) / Beteiligte

• Scaraggi, Michele
• Mezzapesa, Francesco P
• Carbone, Giuseppe
• Ancona, Antonio
• Sorgente, Donato
• Lugara, Pietro Mario

Titel

Minimize friction of lubricated laser-microtextured-surfaces by tuning microholes depth

Ist Teil von

• Tribology international, 2014-07, Vol.75, p.123-127

Erscheinungsjahr

2014

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• We have investigated the friction properties of lubricated laser micro-textured surfaces. The microtexture consists of a square lattice of micro-holes whose diameter, depth and spacing are controlled during the laser texturing process. All surfaces have the same texture area density, but different diameters and depths of the micro-holes. We measure the coefficient of friction on a range of sliding velocities from the mixed lubrication regime to the hydrodynamic regime. We find that the depth and the diameter of the micro-holes have a huge influence in determining the amount of friction reduction at the interface. Interestingly experiments also show that optimal micro-hole depth values, minimizing the friction in the hydrodynamic regime, are remarkably effective also in the mixed lubrication regime.