Investigation of materials for inert electrodes in aluminum electrodeposition cells
Work was divided into major efforts. The first was the growth and characterization of specimens; the second was Hall cell performance testing. Cathode and anode materials were the subject of investigation. Preparation of specimens included growth of single crystals and synthesis of ultra high purity powders. Special attention was paid to ferrites as they were considered to be the most promising anode materials. Ferrite anode corrosion rates were studied and the electrical conductivities of a set of copper-manganese ferrites were measured. Float Zone, Pendant Drop Cryolite Experiments were undertaken because unsatisfactory choices of candidate materials were being made on the basis of a flawed set of selection criteria applied to an incomplete and sometimes inaccurate data base. This experiment was then constructed to determine whether the apparatus used for float zone crystal growth could be adapted to make a variety of important based melts and their interactions with candidate inert anode materials. The third major topic was Non Consumable Anode (Data Base, Candidate Compositions), driven by our perception that the basis for prior selection of candidate materials was inadequate. Results are presented. 162 refs., 39 figs., 18 tabs.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG07-83ID12380
- OSTI ID:
- 5743785
- Report Number(s):
- DOE/ID/12380-18; ON: DE88003380
- Country of Publication:
- United States
- Language:
- English
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36 MATERIALS SCIENCE
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALUMINIUM
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANODES
BORIDES
BORON COMPOUNDS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CATHODES
CHALCOGENIDES
CHEMICAL REACTIONS
CORROSION
CRYSTAL GROWTH
CURRENT DENSITY
DEPOSITION
DESIGN
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRODEPOSITION
ELECTRODES
ELECTROLYSIS
ELECTROLYTIC CELLS
ELEMENTS
ENERGY CONSERVATION
FERRIMAGNETIC MATERIALS
FERRITES
IRON COMPOUNDS
LASERS
LATTICE PARAMETERS
LINERS
LYSIS
MAGNETIC MATERIALS
MATERIALS
MATERIALS TESTING
METALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POWDERS
SURFACE COATING
SYNTHESIS
TESTING
TITANIUM BORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS