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97314 IN SITU FLUORESCENCE IMAGING OF LOCALIZED CORROSION WITH A pH-SENSITIVE IMAGING FIBER

Product Number: 51300-97314-SG
ISBN: 97314 1997 CP
Author: Anna A. Panova, Paul Pantano, David R. Walt
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A fiber optic pH-sensor capable of both visualizing corrosion sites and measuring local chemical concentrations is applied to real-time corrosion monitoring. The imaging fiber’s distal face containing an immobilized pH-sensitive fluorescentdye is brought into contact with metal surfaces submerged in aqueous buffers and fluorescence images are acquired as a function of time. The observed changes in fluorescence due to increases in pH at cathodic sites and decreases in pH at anodic sites are indicative of localized corrosion rotes. Keywords: corrosion, galvanic, localized, imaging, pH-changes
A fiber optic pH-sensor capable of both visualizing corrosion sites and measuring local chemical concentrations is applied to real-time corrosion monitoring. The imaging fiber’s distal face containing an immobilized pH-sensitive fluorescentdye is brought into contact with metal surfaces submerged in aqueous buffers and fluorescence images are acquired as a function of time. The observed changes in fluorescence due to increases in pH at cathodic sites and decreases in pH at anodic sites are indicative of localized corrosion rotes. Keywords: corrosion, galvanic, localized, imaging, pH-changes
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