**Preface to "Corrosion Resistance Enhancement of the Materials Surface"**

From the perspective of engineers, physicists, medical doctors, researchers, and scientists, we analyze and discuss different topics on corrosion resistance. The high potential of the enhancement of a material's surface (using metallic, polymer, or ceramic layers or by active functionalization through laser or ion beam, mechanical, or chemical transformation) makes them suitable for many medical or industrial applications. Actual activity in the domain presents a few problems connected to the obtaining and processing of metallic alloys, the modification of the surface state, and the characterization, modeling, and simulation or prototyping technologies. This Special Issue of *Materials* intends to focus on the most recent advances in obtaining materials with active surfaces used in the industrial, automotive, chemical, or medical fields with enhanced performances.

> **Costica Bejinariu and Nicanor Cimpoesu** *Editors*
