한국표면공학회지 (52권1호 37-42)
Wettability of Lubricant-Impregnated Electroplated Zinc Surface with Nanostructure
윤활유가 침지된 나노구조 전기아연도금층의 젖음성
Jung, Haechang;Kim, Wang Ryeol;Jeong, Chanyoung;Lee, Junghoon;
부경대학교 금속공학과;한국생산기술연구원;동의대학교 신소재공학과;
Department of Metallurgical Engineering, Pukyong National University;Korea Institute of Industrial Technology (KITECH);Department of Advanced Materials Engineering, Dong-Eui University;
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.