Initial stages of interaction of aluminum with aqueous solutions containing various oxo anions

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Prot. Met. (Engl. Transl.); (United States)

OSTI ID:6323909

Berdzenishvili, G A; Mikhailovskii, Y N; Strekalov, P V

With the aid of a piezoquartz micobalance together with electrode potential measurements, the authors study the initial stages of the corrosion interaction of aluminum with acidulated sulfate solutions containing oxidizing agents - chromate, molybdate, vanadate, tungstate, and permanganate. In a sulfate base electrolyte the mass of the aluminum decreased. In the presence of chromate the mass of the aluminum remained practically constant, but in the solutions with the other oxidizing agents it increased. The observed changes in mass and the retardation of corrosion in the presence of ono anions are due to the formation of films of oxides on the aluminum surface and to the inhibiting action of OH/sup -/ ions in the surface layer of electrolyte, formed by reduction of the oxo anions in the cathodic process.

• Research Organization: Inst. of Physical Chemistry, Academy of Sciences of the USSR
• OSTI ID: 6323909
• Journal Information: Prot. Met. (Engl. Transl.); (United States), Journal Name: Prot. Met. (Engl. Transl.); (United States) Vol. 21:1; ISSN PTNMA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALUMINIUM
ANIONS
AQUEOUS SOLUTIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CHROMATES
CHROMIUM COMPOUNDS
CORROSION
CORROSION INHIBITORS
CORROSION RESISTANCE
CORROSIVE EFFECTS
DISPERSIONS
ELECTROCHEMICAL CORROSION
ELECTRODES
ELECTROLYTES
ELEMENTS
FILMS
IONS
MANGANESE COMPOUNDS
METALS
MIXTURES
MOLYBDATES
MOLYBDENUM COMPOUNDS
OXIDIZERS
OXYGEN COMPOUNDS
PERMANGANATES
REFRACTORY METAL COMPOUNDS
SOLUTIONS
SULFATES
SULFUR COMPOUNDS
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES
VANADATES
VANADIUM COMPOUNDS