**4. Conclusion**

Laser-induced periodic surface structures with good uniformity were imprinted on X5CrNi18010 stainless steel by using a unique scanning strategy in the radial direction. Such a strategy has been allowed to investigate the mixed lubrication regime of the Stribeck curve. All over the investigated range, the CoF on the LIPSS-patterned surface was substantially lower than on the unpatterned one. The CoF reduction went from a minimum of 10% for 4–8 <sup>×</sup> 10−<sup>7</sup> m−1, to a maximum of 25% for 5–9 <sup>×</sup> <sup>10</sup>−<sup>7</sup> m−1. Also, the wear of the disc was less pronounced in the case of the textured surface, leading to a wear reduction of about 65%. These results are in perfect agreement with most of the studies on the tribological effect of surface texturing [23–25]; but in the present work, the texture was generated in a faster and efficient way, enabling the processing of a large number of pieces and/or of large areas.

**Author Contributions:** Conceptualization, I.G., A.R. and L.O.; Methodology, I.G., A.R. and E.G.; Resources, S.V. and L.O.; Supervision, S.V. and L.O.; Validation, A.R.; Writing—-original draft, I.G. and A.R.; Writing—-review & editing, E.G., S.V. and L.O.

**Conflicts of Interest:** The authors declare no conflict of interest.

#### **References**


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