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J. Ocean Eng. Technol. 2003;17(3):52-56.    

Corrosion Protection of STS304 Steel with Photo-Functional Material $TiO_2$ Coating
NAM KI-WOO;LEE SUNG-YEON;AHN SEOK-HWAN;KIM JONG-SOON;
College of Engineering, Pukyong National University;Graduate School, Pukyong National University;College of Engineering, Pukyong National University;Nanux Inc., Gimhae;
광기능성 재료 $TiO_2$ 피막에 의한 STS304강의 방식
남기우;이승연;안석환;김종순;
부경대학교 공과대학;부경대학교 대학원 재료공학과;부경대학교 공과대학;(주)나눅스;
© 2003 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
핵심용어: Sol-Gel Method 졸-겔법, STS304 Steel 304스테인리스강, Photo-Effect 광효과, Photopotential 광전위, Cathodic Protection 음극방식, Self-Cleaning 자정작용
Abstract
This study investigates the photoelectrochemical behavior of STS304 steel with TiO2 thin films coating, applied by sol-gel mehod, for the purpose of cathodic photoprotection of the steel corrosion. One time TiO2-coated STS304 steel, adapted with two kinds of TiO2 sol solution, has the most dominant photopotential abilities, which was -200mV vs. SCE and -500mV vs. SCE under illumination with 40 W fluorescent lamp, respectively. That had yielded more negative values than the corrosion potential of the bare metal(-130mv vs.SCE). The bleaching of TCE was confirmed on TiO2-coated STS304 steel under UV-illumination with 20W Black-light. This Study concluded that Ti02-coated STS304 exhibited both a cathodic photoprotection effect against corrosion and a photocatalytic self-cleaning effect.
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