Features of the formation of anodic niobium oxide in a potassium nitrate melt

Journal Article · Sun Jul 10 04:00:00 EDT 1988 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6183726

Skatkov, L I; Malyuk, Yu I

This work is a further development of the investigations of the processes of the anodization of niobium in nitrate melts of salts at temperatures allowing recrystallization of the oxide. The anodic films of niobium formed in a nitrate melt consist of sandwiches of phases of Nb/sub 2/O/sub 5/, NbO/sub 2/, and NbO (from the outer surface of the anodic oxide film toward the niobium substrate), and high anodization temperatures cause the intense dissolution of oxygen in the niobium substrate. During the formation of an anodic oxide film, it becomes saturated with the anionic and cationic components of the electrolyte. The uptake of the anions is most significant in the initial stages of growth of the oxide layer, while saturation with potassium occurs in the final stages of anodization.

• OSTI ID: 6183726
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 61:1; ISSN JAPUA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALI METAL COMPOUNDS
ANIONS
ANODIZATION
ARGON IONS
AUGER ELECTRON SPECTROSCOPY
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL COATING
COHERENT SCATTERING
CORROSION PROTECTION
CORROSIVE EFFECTS
CRYSTAL GROWTH
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DEPOSITION
DIFFRACTION
ELECTROCHEMICAL COATING
ELECTROLYSIS
ELECTROLYTES
ELECTRON SPECTROSCOPY
ELEMENTS
ETCHING
FILMS
HEXAGONAL LATTICES
IONS
LATTICE PARAMETERS
LYSIS
METALS
MOLTEN SALTS
NIOBIUM
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
NITRATES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
POTASSIUM COMPOUNDS
POTASSIUM NITRATES
RECRYSTALLIZATION
REFRACTORY METAL COMPOUNDS
SALTS
SCATTERING
SPECTROSCOPY
SURFACE COATING
SURFACE FINISHING
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
X-RAY DIFFRACTION