Isolating the Electrochemical Behavior of the Austenite and Ferrite Phases in a Duplex Stainless Steel

An experimental technique for making electrochemical measurements on isolated individual phase regions of known crystalline orientation in a duplex stainless steel is demonstrated. An ultraviolet-sensitive photoresist is used to mask the excluded portions of the sample and a 355 nm laser exposes onl...

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Bibliographic Details
Main Authors: Policastro, Steve, Martin, Farrel J., Rayne, Roy, Auyeung, Ray C., Pique, Alberto, Lewis, Alexis, Geltmacher, Andrew, Natishan, Paul M.
Format: Conference Proceeding
Language:English
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Summary:An experimental technique for making electrochemical measurements on isolated individual phase regions of known crystalline orientation in a duplex stainless steel is demonstrated. An ultraviolet-sensitive photoresist is used to mask the excluded portions of the sample and a 355 nm laser exposes only portions of the ferrite matrix or cross-sections of austenite dendrites. Initial impedance measurements indicate a relatively low solution resistance in seawater and the polarization scans of the ferrite and austenite phases were consistent with bulk polarization measurements.
ISSN:1938-5862
1938-6737
DOI:10.1149/1.3407554