Probing corrosion activity in high subcritical and supercritical water through electrochemical noise analysis

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3293545· OSTI ID:6841909

Liu, C; Macdonald, D D; Medina, E; Villa, J J ^[1]; Bueno, J M ^[2]

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1. Pennsylvania State Univ., University Park, PA (United States). Center for Advanced Materials
2. Union Fenosa, Madrid (Spain). Investigacion y Neuvas Technologies

A chemistry and corrosion monitoring system was devised to monitor chemistry parameters and corrosion activity in the heat transport circuits of thermal power plants. The system included an electrochemical noise analyzer (ENA) to probe the corrosion activities of metals and alloys in contact with the heat transport fluid. Electrochemical noise was measured as a function of oxygen concentration ([O[sub 2]]), flow rate, temperature, and pressure in simulated heat transport circuit fluids at temperatures up to 550 C and at pressures as high as 276 bar (4,000 psi, 27.6 MPa). Electrochemical noise from corroding carbon steel could be measured in high subcritical and supercritical water, and the magnitude of the noise responded in a sensible manner to changes in the chemical and physical properties of the fluid.

• OSTI ID: 6841909
• Journal Information: Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 50:9; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200101 -- Fossil-Fueled Power Plants-- Cooling & Heat Transfer Equipment & Systems
22 GENERAL STUDIES OF NUCLEAR REACTORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CARBON STEELS
CHEMICAL REACTIONS
CHEMISTRY
CORROSION
ELECTRIC POTENTIAL
ELECTROCHEMISTRY
HEAT EXCHANGERS
IRON ALLOYS
IRON BASE ALLOYS
MEASURING INSTRUMENTS
POWER PLANTS
STEELS
THERMAL POWER PLANTS
WATER CHEMISTRY