Electrochemical behavior of aluminum in solutions based on the chromic anhydride-water system

Journal Article · Thu Apr 10 04:00:00 EST 1986 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6818615

Tolstikova, M M; Demidov, A I; Morachevskii, A G

The study of the electrochemical behavior of aluminum in solutions based on the chromic anhydride-water system if of interest in relation to development of galvanic cells with aluminum anodes and chromic acid electrolytes. This paper presents the results of studies of the electrochemical behavior of aluminum in solutions of the CrO/sub 3/-H/sub 2/O, CrO/sub 3/-NaC-H/sub 2/O systems at 298 K. It is shown that the stationary potential of aluminum in solutions of the CrO/sub 3/-H/sub 2/O system assumes values of 0.31-0.47 V against the normal hydrogen electrode. Introduction of sodium chloride into the electrolyte has a significant influence on the electrochemical behavior of aluminum in chromic acid solutions. The higher the content of the chromic anhydride in the solution, the greater is the amount of sodium chloride that must be added to the solution for depassivation of aluminum.

• Research Organization: M.I. Kalinin Polytechnic Institute, Leningrad
• OSTI ID: 6818615
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 58:10,PT.2; ISSN JAPUA
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ALUMINIUM
ANHYDRIDES
ANODES
CHALCOGENIDES
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
CHROMIC ACID
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
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ELECTRIC POTENTIAL
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ELECTROCHEMISTRY
ELECTRODES
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FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATERIALS TESTING
METALS
OXIDES
OXYGEN COMPOUNDS
POLARIZATION
POTENTIOMETRY
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM FLUORIDES
SODIUM SULFATES
SULFATES
SULFUR COMPOUNDS
TESTING
TITRATION
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