Research on the tribological properties of periodic micro- and nanostructures on the molybdenum surface obtained as a result of laser action

Abstract In this paper, a method for obtaining periodic surface structures under the action of ultrashort pulses on the metal surface by a strongly astigmatic beam is examined. The main advantages of this micro- and nanostructures formation method are the high productivity and reproducibility of the laser machining results. After femtosecond laser irradiation on the metal, the specimen surface acquires a smaller coefficient of friction and wear, which accentuate the enormous potential of the laser-induced periodic surface structure in tribological applications. The structure of the generated surfaces, as well as the tribological properties of such structures, was studied using a scanning electron microscope.