Long-term testing of in-situ cerium oxide coated anodes for aluminum electrowinning
The ELTECH Anode Phase 2 Project (Contract Number AC07-86ID12655), as supported by the Department of Energy (DOE) from December 1988 through April 1989, focused on long-term testing of in-situ anodically deposited cerium oxide (CEROX) coatings on nickel ferrite/Cu cermets. The specific objective of this research was to determine the effectiveness of the CEROX coating in reducing the transfer of cermet components to the produced aluminum. A dosing regimen was first established for the minimum addition of cerium to the cell necessary to produce targeted CEROX coatings on the cermet anode and the periodic additions necessary to maintain coating thicknesses. The effects of the addition of CeF{sub 3} on CEROX coating formation was evaluated for targeted coating thicknesses at three different current densities. Analytical procedures were identified for determining alumina concentrations and the cryolite bath ratio for quasi-commercial baths.
- Research Organization:
- ELTECH Research Corp., Fairport Harbor, OH (USA)
- Sponsoring Organization:
- DOE/CE
- DOE Contract Number:
- AC07-86ID12655
- OSTI ID:
- 6625657
- Report Number(s):
- DOE/ID/12655-2; ON: DE90015283
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALUMINIUM
ANODES
CERIUM COMPOUNDS
CERIUM FLUORIDES
CERIUM OXIDES
CERMETS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COMPOSITE MATERIALS
CORROSION
CRYSTAL STRUCTURE
DEPOSITION
DIFFUSION
DOCUMENT TYPES
ELECTRODES
ELECTROMETALLURGY
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
MATERIALS
METALLURGY
METALS
MICROSCOPY
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PROGRESS REPORT
RARE EARTH COMPOUNDS
TESTING
360101* -- Metals & Alloys-- Preparation & Fabrication
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALUMINIUM
ANODES
CERIUM COMPOUNDS
CERIUM FLUORIDES
CERIUM OXIDES
CERMETS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COMPOSITE MATERIALS
CORROSION
CRYSTAL STRUCTURE
DEPOSITION
DIFFUSION
DOCUMENT TYPES
ELECTRODES
ELECTROMETALLURGY
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
MATERIALS
METALLURGY
METALS
MICROSCOPY
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PROGRESS REPORT
RARE EARTH COMPOUNDS
TESTING