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

Journal Article · Tue Jul 01 00:00:00 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), Vol. 21:6
• Country of Publication: United States
• Language: English

Related Subjects

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