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Korean Journal of Metals and Materials > Volume 59(4); 2021 > Article
Korean Journal of Metals and Materials 2021;59(4): 217-222. doi: https://doi.org/10.3365/KJMM.2021.59.4.217
내식성 향상을 위한 기능성 초발수 스테인리스 스틸 (SUS 304) 표면 연구
박영주, 정찬영
동의대학교신소재공학과
Study on a Superhydrophobic Stainless Steel (SUS 304) Surface to Enhance Corrosion Resistance
Youngju Park, Chanyoung Jeong
Department of Advanced Materials Engineering, Dong-eui University, Busan 47340, Republic of Korea
Correspondence  Chanyoung Jeong ,Tel: +82-52-890-2286, Email: cjeong@deu.ac.kr
Received: 27 January 2021;  Accepted: 23 February 2021.  Published online: 24 March 2021.
*Youngju Park and Chanyoung Jeong contributed equally to this work.
ABSTRACT
Stainless steel is a metal with excellent workability, economy, and corrosion resistance, so it is used in various industrial applications including the marine, machinery, electronic parts, piping, power generation, and nuclear power fields. However, in contaminated environments such as marine and gas pipelines, stainless steel has problems, including surface aging and corrosion. Several surface treatment methods have been proposed to address those problems. This study was conducted to observe the water repellency and corrosion resistance of a superhydrophobic phosphorylated film on the surface of stainless steel. The anodization was carried out using a step-by-step process under voltage in an ethylene glycol electrolyte, at 30, 50, and 70 V for 3 hours, respectively. The distance between the anode electrode and cathode electrode was maintained at 5 cm. A water-repellent surface was achieved using a FDTS (1H, 1H, 2H, 2H-Perfluorodecyltrichlorosilane) solution, a material with low energy, on the surface of the fabricated specimen. A Field Emission Scanning Electron Microscope (FE-SEM) was used to analyze the surface shape of the structure, and water repellency was analyzed using an angle meter. The corrosion behaviors of the electrochemical oxide film were investigated through polarization experiments.
Keywords: stainless steel, anodization, thin oxide films, superhydrophobic coating, corrosion resistance
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