Mechanism of biocorrosion of low-alloy steel in a thionic bacteria medium
This paper models the process of biocorrosion of Armco iron,low alloy steel 10KhSND (0.69 mass % Ni, 0.7 Cr, 0.55 Cu), and also alloys of Armco iron with chromium, copper, and nickel in concentrations corresponding to the level of their content in steel (of order 0.7%) in a medium of the thionic bacteria of the form Thiobacillus thiooxidans. Biocorrosion of metals inflicts losses on systems of water supply and recirculation in industrial plants, in the oil and gas industry, and in hydraulic structures. Investigations of the surface composition of the steel with the aid of a Cameca scanning electron microanalyzer and analysis of the corrosion products by the atomic absorption method revealed that, in contrast with the model, in the culture liquid the surface of steel 10KhSND and its corrosion products are depleted of nickel.
- Research Organization:
- All-Union Sci-Res Institute for Protection of Metals from Corrosion
- OSTI ID:
- 5192860
- Journal Information:
- Prot. Met. (Engl. Transl.); (United States), Journal Name: Prot. Met. (Engl. Transl.); (United States) Vol. 21:6; ISSN PTNMA
- Country of Publication:
- United States
- Language:
- English
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ABSORPTION SPECTRA
ALLOYS
BACILLUS
BACTERIA
BIOCHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMIUM
COPPER
CORROSION
CORROSION PRODUCTS
CORROSIVE EFFECTS
CULTURE MEDIA
ELECTROCHEMICAL CORROSION
ELECTRON MICROSCOPY
ELEMENTS
IRON ALLOYS
IRON BASE ALLOYS
KINETICS
MATHEMATICAL MODELS
METABOLISM
METALLURGICAL EFFECTS
METALS
MICROORGANISMS
MICROSCOPY
NICKEL
ORGANIC ACIDS
ORGANIC COMPOUNDS
PIPELINES
REACTION KINETICS
SCANNING ELECTRON MICROSCOPY
SPECTRA
SULFUR-OXIDIZING BACTERIA
THIOBACILLUS OXIDANS
TRANSITION ELEMENTS
WATER SUPPLY