In situ fluorescence imaging of localized corrosion with a pH-sensitive imaging fiber

Conference · Mon Dec 01 00:00:00 EST 1997

OSTI ID:549456

Panova, A A; Pantano, P; Walt, D R ^[1]

---

1. Tufts Univ., Medford, MA (United States)

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 fluorescent dye 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 rates.

• OSTI ID: 549456
• Report Number(s): CONF-970332-; TRN: IM9751%%139
• Resource Relation: Conference: Corrosion 97. 52. annual corrosion conference of the National Association of Corrosion Engineers: economics and performance - bridging the gap and NACExpo, New Orleans, LA (United States), 9-14 Mar 1997; Other Information: PBD: 1997; Related Information: Is Part Of Corrosion/97 conference papers; PB: [4584] p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CORROSION PRODUCTS
MONITORS
FLUORESCENCE
PH VALUE
FIBER OPTICS
CHEMICAL ANALYSIS
COPPER
ALUMINIUM