抄録
We have investigated femtosecond-laser-induced surface texturing of Al-Si alloy for reducing friction.
Although it had been reported for typical metal substrates such as stainless steel that the Laser-Induced
Periodic Surface Structure (LIPSS) had effects for lowering the coefficient of friction, we focused our
experiments on the Al-Si alloy used in industrial equipments. It was demonstrated that the surface
roughness could be controlled by adjusting irradiated laser fluences due to the differences of ablation
properties between Al and Si. It was confirmed that the coefficient of friction was reduced about 20%
for the textured surfaces.
