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Localized Corrosion of Zn-Plated Carbon Steel Used as a Fire Sprinkler Pipe  

Lee, Jin Hee (SK Engineering & Construction Corp.)
Lee, You-Kee (Department of Semiconductor & Electronics Engineering, Uiduk University)
Lee, Kyu Hwan (Department of Surface Technology, Korea Institute of Materials Science)
Kim, Dong-Kyu (Department of Metallurgical Engineering, Dong-A University,)
Lee, Sung Gun (Department of Metallurgical Engineering, Dong-A University,)
Lee, Sang Hwa (Department of Metallurgical Engineering, Dong-A University,)
Kim, Insoo (Department of Metallurgical Engineering, Dong-A University,)
Publication Information
Corrosion Science and Technology / v.8, no.4, 2009 , pp. 148-152 More about this Journal
Abstract
The failure of a Zn-plated carbon steel pipe that served as a fire sprinkler was investigated in terms of the pipe's corrosion products. The pipes leaked through holes formed beneath the tubercles. The formation of oxygen concentration cell involves colonization of metal surface by aerobic bacteria or other slime formers, and anodic reaction beneath tubercle is accelerated by the presence of SRB, leading to the formation of hole beneath tubercle.
Keywords
Zn-Plated Carbon Steel; Fire Sprinkler Pipe; Localized Corrosion;
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