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http://dx.doi.org/10.14773/cst.2010.9.6.300

Micro-electrochemical Characteristics of Sensitized 304 Stainless steel Using Micro-droplet cell Techniques  

Kim, Kyu-Seop (School of Advanced Materials Engineering, Kookmin University)
Lee, Jae-Bong (School of Advanced Materials Engineering, Kookmin University)
Publication Information
Corrosion Science and Technology / v.9, no.6, 2010 , pp. 300-309 More about this Journal
Abstract
The influences of sensitization on localized corrosion resistance of 304 stainless steel, were investigated, using micro-dropletcell techniques. Micro-droplet cell allows one to align the micro-electrode to the desired spot of the working electrode and measure directly local current with the potentiodynamic polarization, linear polarization and a.c. impedance. Micro-electrochemical tests were carried out inside of the grain and on grain boundaries separately. It was found that sensitization decreased the pitting potential, increasing corrosion current density around grain boundaries. Galvanic current density was also measured between grain and grain boundaries.
Keywords
micro-droplet cell; potentiodynamic polarization; linear polarization; a.c. impedance; sensitization;
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Times Cited By KSCI : 2  (Citation Analysis)
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