Corrosion of some chromium-nickel steels and alloys in sulfuric acid solutions of sodium sulfite

Journal Article · Sun May 01 04:00:00 EDT 1988 · Prot. Met. (Engl. Transl.); (United States)

OSTI ID:6409049

Kopeliovich, D K; Glagolenko, Yu V; Ermolinskii, S P

Steels 12Kh18N1OT and 10Kh17N13M3T and alloys 06KhN28MDT and 46KhNM were studied in sulfuric acid solutions containing sodium sulfite and sulfur dioxide to determine the effects of different concentrations of the corrosive constituents on the anodic and cathodic active and passive corrosion behavior of the metals. Polarization curves were obtained with a P-5827 M potentiostat. Addition of sulfite facilitated both electrode processes and the region of the reactive state was broadened due to the shift of passivation potentials to more positive values. The activating effect of sulfite reduction products were confirmed by tests of alloys in spent solutions. This increased likelihood of activation and the decrease of the solutions's own corrosion potential were both attributed to retardation of the cathodic process by lower valence sulfur compounds.

• OSTI ID: 6409049
• Journal Information: Prot. Met. (Engl. Transl.); (United States), Journal Name: Prot. Met. (Engl. Transl.); (United States) Vol. 23:5; ISSN PTNMA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ACTIVATION ENERGY
ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM-MOLYBDENUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSIVE EFFECTS
ELECTROCHEMICAL CORROSION
ELECTRODES
ENERGY
HIGH ALLOY STEELS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
IRON ALLOYS
IRON BASE ALLOYS
NICKEL ALLOYS
OXIDES
OXYGEN COMPOUNDS
PASSIVATION
POTENTIOMETRY
QUANTITY RATIO
REDUCTION
STAINLESS STEELS
STEELS
SULFITES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFURIC ACID
TITRATION