Research progress of superhydrophobic surface prepared by plasma spraying

Abstract

Superhydrophobic surfaces offer a wide range of uses, including self-cleaning, oil-water separation, and underwater drag reduction. Conventional methods for producing superhydrophobic surfaces are frequently complicated, difficult to operate, and wasteful. Plasma spraying is a widespread surface modification technique, and using plasma spraying to produce superhydrophobic surfaces offers an advantage of simple preparation process and high preparation efficiency. Recent advances in the preparation of superhydrophobic surfaces using plasma spraying were summarized. Firstly, the basic principles of superhydrophobic surfaces and plasma spraying technique were introduced; then, the process evolution of two plasma spraying methods for the preparation of superhydrophobic surfaces, atmospheric plasma spraying and liquid phase plasma spraying was summarized, and the preparation characteristics of the two methods were described; finally, it was pointed out that the preparation of superhydrophobic surfaces using plasma spraying has the advantages of simple operation, low cost and excellent preparation performance, but also faces challenges such as complex exploration of process parameters and difficult balance between performance and preparation efficiency. It was expected that this paper would be useful in the surface modification of critical components used in aerospace, marine science, and military equipment.

Keywords

• superhydrophobic
• plasma spraying
• coarse structure
• low surface energy