윤활유가 침지된 나노구조 전기아연도금층의 젖음성

• Published in: Biuletyn Uniejowski Vol. 52; no. 1; pp. 37 - 42
• Main Authors: 정해창(Haechang Jung), 김왕렬(Wang Ryeol Kim), 정찬영(Chanyoung Jeong), 이정훈(Junghoon Lee)
• Format: Journal Article
• Language: Korean
• Published: 한국표면공학회 2019
• Subjects: 기계공학; Nanostructure; Zinc Electrodeposition; Hydrophobicity; Lubricant
• ISSN: 1225-8024; 2299-8403; 2288-8403
• DOI: 10.5695/JKISE.2019.52.1.37

Electrodeposited zinc layer is widely used as a sacrificial anode for a corrosion protection of steel. In this study, we modified the surface of electrodeposited zinc to have a hydrophobicity, which shows various advanced functionalities, such as anti-corrosion, anti-biofouling, anti-icing and self-cleaning, due to its repellency to liquids. Superhydrophobicity was realized on electrodeposited zinc layer with a hydrothermal treatment, creating nanostructures on the surface, and following Teflon coating. The superhydrophobic surface shows a great repellency to water with high surface tension, while liquid droplets with low surface tension easily adhered on the superhydrophobic surface. However, immiscible lubricant-impregnated superhydrophobic surface shows a great repellency to various liquids, regardless of their surface tension. Therefore, it is expected that the lubricant-impregnated surface can be an alternative of superhydrophobic surface, which have a drawback for some liquids with a low surface tension.