Accession Number : ADA190651

Title :   The Kinetics of Contact Noise in NaBeta Alumina.

Descriptive Note : Technical rept. 1987-Jan 88,

Corporate Author : UTAH UNIV SALT LAKE CITY DEPT OF PHYSICS

Personal Author(s) : Kuo, Chu K ; Brophy, James J

PDF Url : ADA190651

Report Date : Jan 1988

Pagination or Media Count : 14

Abstract : The kinetics of interfacial chemical reaction noise at sodium amalgam and NaI propylene carbonate contacts to NaBeta'Alumina are examined by determining the time and temperature dependence of the noise. The rate constant for the reaction noise is larger for amalgam contacts and increases with sodium concentration in both cases. The noise is thermally activated with an activation energy of 0.5eV, which is similar to that of bulk diffusion noise in NaBeta'Alumina. Keywords: Diffusion noise, Conductivity fluctuations, Superionic conductors, Beta alumina ceramics, Single crystals.

Descriptors :   *ALUMINUM OXIDES, *AMALGAMS, *CERAMIC MATERIALS, *NOISE, *ELECTRODES, CHEMICAL REACTIONS, CONDUCTIVITY, DIFFUSION, INTERFACES, KINETICS, RATES, SODIUM, TEMPERATURE, VARIATIONS, IODIDES, PROPENES, CARBONATES, IONIC CURRENT, SINGLE CRYSTALS, LIQUIDS, SOLID ELECTROLYTES, ELECTRIC CONTACTS, ACOUSTIC ATTENUATION

Subject Categories : Acoustics
      Electrical and Electronic Equipment
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE