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Evaluation of Electrochemical Corrosion Characteristics for Hot-Dip Aluminized 304 Stainless Steel in Seawater
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 Title & Authors
Evaluation of Electrochemical Corrosion Characteristics for Hot-Dip Aluminized 304 Stainless Steel in Seawater
Chong, Sang-Ok; Park, Il-Cho; Han, Min-Su; Kim, Seong-Jong;
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Stainless steel has poor corrosion resistance in marine environment due to the breakdown of a passive film caused by chloride. It suffers electrochemical corrosion like pitting corrosion, crevice corrosion, and stress corrosion crack (SCC) in marine environment. In general, it indicates that the passive film of has better corrosion resistance than that of in seawater. This paper investigated the damage behavior 304 stainless steel and hot-dip aluminized 304 stainless steel in seawater solution. Various electrochemical experiments were carried out including potential measurement, potentiodynaimic experiment, Tafel analysis and galvanostatic experiment. As a result of anodic polarization experiment, higher pitting damage depth was indicated at 304 stainless steel than hot-dip aluminized 304 stainless steel. In addition, relatively higher corrosion current density was shown at hot-dip aluminized stainless steel as a result of Tafel analysis.
stainless steel;passive film;corrosion;hot-dip aluminized;
 Cited by
천연해수 용액에서 STS 304와 용융 알루미늄 도금된 STS 304의 캐비테이션-침식 환경 하에서의 전기화학적 특성,정상옥;김성종;

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