Cathodic and anodic behavior of steel in water with saprophytic anaerobic bacterial flora
Saprophytic bacteria in the bacterial communities of overgrowths cause biocorrosion in hydroelectric power plants. In order to study bacteria in overgrowths in the Zaporozhskii reservoir at a depth of 2 m the authors fixed specimens - plate of steel St3 - for 30 days. The potentiodynamic (5 mV/sec) curves of cathodic and anodic polarization of steel St3 in sterile water and also in medium with Bacillus putrificus on the 34th and 57th days of the experiment are shown. The anodic curve of steel after 57 days in the medium with the bacteria containing 30 mg/liter of hydrogen sulfide, has a section with fall of process rate at potentials from -0.35 to -0.20 V; on the curves recorded after 12 and 34 days there are no such sections.
- Research Organization:
- Daepropetrovsk State Univ.
- OSTI ID:
- 5283427
- Journal Information:
- Prot. Met. (Engl. Transl.); (United States), Vol. 21:6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BACILLUS
BIOCHEMICAL REACTION KINETICS
CORROSIVE EFFECTS
STAINLESS STEELS
ELECTROCHEMICAL CORROSION
ANAEROBIC CONDITIONS
CULTURE MEDIA
HYDROELECTRIC POWER PLANTS
HYDROGEN SULFIDES
IRON SULFIDES
PASSIVATION
POLARIZATION
POTENTIOMETRY
WATER RESERVOIRS
ALLOYS
BACTERIA
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION RESISTANT ALLOYS
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
IRON COMPOUNDS
KINETICS
MICROORGANISMS
POWER PLANTS
REACTION KINETICS
STEELS
SULFIDES
SULFUR COMPOUNDS
SURFACE WATERS
TITRATION
TRANSITION ELEMENT COMPOUNDS
360105* - Metals & Alloys- Corrosion & Erosion
400400 - Electrochemistry