AC conductivity of polycrystalline Ca-. beta. ''-alumina

Conference · Sat Oct 01 04:00:00 EDT 1983 · Proc. - Electrochem. Soc.; (United States)

OSTI ID:6774896

Hellstrom, E E

Polycrystalline Ca-..beta..''-alumina was prepared from Na-..beta..''-alumina by molten salt exchange in Ca(NO/sub 3/)/sub 2/-CaCl/sub 2/ and in CaCl/sub 2/. CaO /SUP ./ 6A1/sub 2/O/sub 3/ did not form during the exchange processes. CaCl/sub 2/ attacks the polycrystalline ..beta..''-alumina. AC conductivity data on the polycrystalline material were fitted to an equivalent circuit using a nonlinear least-squared-error fitting program, from which the Ca ion conductivity was extracted. The bulk Ca ion conductivity is 3x10/sup -4/ (ohm.cm)/sup -1/ at 300/sup 0/C. Intergranular resistance is thought to dominate the overall Ca ion resistance.

• Research Organization: Sandia National Laboratories, Albuquerque, NM
• OSTI ID: 6774896
• Report Number(s): CONF-831086-
• Conference Information: Journal Name: Proc. - Electrochem. Soc.; (United States) Journal Volume: 84-4
• Country of Publication: United States
• Language: English

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Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALTERNATING CURRENT
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CADMIUM COMPOUNDS
CADMIUM NITRATES
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHALCOGENIDES
CHEMICAL PREPARATION
CHLORIDES
CHLORINE COMPOUNDS
CORUNDUM
CRYSTALS
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTROLYTES
HALIDES
HALOGEN COMPOUNDS
ION EXCHANGE
MINERALS
MOLTEN SALTS
NITRATES
NITROGEN COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYCRYSTALS
SALTS
SODIUM COMPOUNDS
SYNTHESIS