Influence of pH on electrochemical and corrosion behavior of aluminum in media containing oxo anions of the oxidizing type

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Prot. Met. (Engl. Transl.); (United States)

OSTI ID:5228257

Mikhailovskii, Y N; Berdzenishvili, G A

This paper investigates the influence of CrO/sub 4//sup 2 -/, MnO/sub 4//sup -/, VO/sub 4//sup 3 -/, MoO/sub 4//sup 2 -/, and WO/sub 4//sup 2 -/ on the potential and corrosion rate of aluminum in chloride-fluoride solutions with pH from 2 to 12. In neutral solutions on aluminum there is formed a mixed oxide-hydroxide layer with excess hydroxides which inhibits the corrosion of aluminum. Vanadates, molybdates, and tungstates in neutral solutions also formed mixed oxide-hydroxide layers with excess OH/sup -/ on the surface of the aluminum. This paper clearly displays the general laws of variation of the corrosion-electrochemical properties of aluminum in relation to pH in the presence of oxoanions of the oxidizing type.

• Research Organization: Institute of Physical Chemistry, Academy of Sciences
• OSTI ID: 5228257
• 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

Related Subjects

36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ALUMINIUM
ALUMINIUM COMPOUNDS
ALUMINIUM HYDROXIDES
ALUMINIUM OXIDES
ANODIZATION
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMATES
CHROMIUM COMPOUNDS
CORROSION
CORROSION INHIBITORS
CORROSION PROTECTION
CORROSION RESISTANCE
CORROSIVE EFFECTS
DEPOSITION
ELECTROCHEMICAL COATING
ELECTROCHEMICAL CORROSION
ELECTROLYSIS
ELECTROLYTES
ELEMENTS
HYDROGEN COMPOUNDS
HYDROXIDES
KINETICS
LYSIS
MANGANATES
MANGANESE COMPOUNDS
METALS
MOLYBDATES
MOLYBDENUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
REACTION KINETICS
REDOX POTENTIAL
REFRACTORY METAL COMPOUNDS
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES
VANADATES
VANADIUM COMPOUNDS