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Effect of the Specific Resistance of Water on Corrosion Characteristics of STS 304 for Gas Boiler  

Lim, Uh-Joh (Pukyong Nat. University)
Kim, Hwan-Sik (Busan Metropolitan Co.)
Yun, Byoung-Du (Pukyong Nat. University)
Publication Information
Journal of Fisheries and Marine Sciences Education / v.19, no.3, 2007 , pp. 323-328 More about this Journal
Abstract
This paper was studied on the effect of the specific resistance of water on corrosion characteristics of STS 304 for gas boiler. The electrochemical polarization test of STS 304 for gas boiler was carried out. And the polarization resistance, uniform corrosion, corrosion behavior by impressed potential and corrosion sensitivity of STS 304 with specific resistance were considered. The main results are as following: 1) With being low the specific resistance of water, the polarization resistance and corrosion potential of STS 304 decreases, while corrosion current density increases. 2) Under constant impressed potential, the corrosion sensitivity of STS 304 is large with being low the specific resistance due to synergy effect of Cl ion.
Keywords
gas boiler; polarization resistance; impressed potential; specific resistance; corrosion sensitivity;
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