Final report on the characterization of the film on inert anodes

Technical Report · Tue Jan 01 04:00:00 EST 1991

DOI:https://doi.org/10.2172/6044408· OSTI ID:6044408

Windisch, Jr, C F; Stice, N D

Results of post-test microscopic and elemental analysis of the reaction zone on polarized cermet inert anodes, over a range of current densities and alumina concentrations, suggest that an alumina film does not form to protect the anode from dissolution. Rather, significant morphological and compositional changes occur at or near the anode surface. These changes and the chemical reactions that cause them involve the cermet material itself and appear to be responsible for properties that were previously assigned to an alumina film. In particular, a reaction layer formed from the cermet material may have protective properties, while changes in roughness and porosity may contribute to the electrochemical impedance.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6044408
• Report Number(s): PNL-7589; ON: DE91007425
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANODES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CRYSTAL STRUCTURE
CURRENT DENSITY
DEPOSITION
ELECTRIC IMPEDANCE
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTIC CELLS
FILMS
IMPEDANCE
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
ROUGHNESS
SURFACE COATING
SURFACE PROPERTIES
WEAR