Nanosecond Laser Fabrication of Superhydrophobic Surface on Superalloy Substrate with High Mechanical Strength: A Novel Approach for Aero Engine Applications

We submit a manuscript titled 'Nanosecond Laser Fabrication of Superhydrophobic Surface on Superalloy Substrate with High Mechanical Strength' for consideration in Intermetallics. This work presents an innovative and interesting approach to fabricating superhydrophobic surfaces using laser processing. The current laser processing methods have a disadvantage of producing a processed surface with low mechanical strength due to the thick brittle recast layer and thin thickness. Additionally, there is a lack of research on K424 superalloy, which is widely used in the field of aero engine. However, we have successfully fabricated a superhydrophobic surface on superalloy substrate with high mechanical strength by optimizing the laser processing parameters. The micro structures required for superhydrophobicity were constructed by a single laser scan, which ensured minimal loss of mechanical strength. The resulting superhydrophobic surface also exhibited excellent self-cleaning capacity to carbon deposition, which has promising implications for cleaning aero engine. In summary, this manuscript covers the fabrication and application of functional surfaces with micro structures, which are within the scope of Intermetallics. This manuscript has not been published elsewhere, including electronic journals and computer databases of public nature. We hope to receive your favorable response soon.