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Pitting Corrosion of Type 2205 Duplex Stainless Steel Heat Exchanger
U-Bend Heat Exchanger After Extraction from the Shell
Through-Wall Pit as-viewed from the Tube O.D. Surface
U-Bend Portion of Tube Longitudinally Sectioned to View I.D. Surfaces
Dark-Colored Material on Tube I.D. Associated with Pits
EDS Spectrum of Scrapings from the Tube I.D. Surface
EDS Spectrum of the Dark Colored Contamination Associated with the Corrosion Pits
FTIR Spectrum Generated from the Dark Colored Contamination Associated with the I.D. Corrosion Pits
Polished Cross Section Across the Through-Wall Pit
Polished Cross Section Across the Edge of the Through-Wall Pit Showing Corrosion Products that Formed from the Tube I.D.
Selective Corrosion of Ferrite in the Duplex Microstructure
Ferrite (dark) and Austenite (light) Duplex Microstructure of the Pitted Tube
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