Accession Number : AD0293486

Title :   THE ELECTRICAL BEHAVIOR OF REFRACTORY OXIDES

Corporate Author : SYSTEMS RESEARCH LABS INC DAYTON OHIO

Personal Author(s) : VEST,ROBERT W.

Report Date : 20 NOV 1961

Pagination or Media Count : 1

Abstract : Studies of calcia stabilized zirconia in high vacuum were continued. Transport numbers for ions were calculated from polarization measurements over the temperature range 300 to 1100 C. In agreement with earlier measurements, the electronic contribution to the total electrical conductivity was found to be significant only at temperatures below 500 C. From the conductivity data above 500 C, an activation energy of 1.132 ! .015 electron volts was calculated by the method of least squares, the variation indicated being the probable error computed from the scatter of points about the least squares line. Oxygen ion diffusivities in the stabilized zirconia sample were calculated from the conductivities and transport numbers. (Author)

Descriptors :   *CERAMIC MATERIALS, *OXIDES, *REFRACTORY MATERIALS, CALCIUM COMPOUNDS, CHLORIDES, CRYSTALS, DIFFUSION, ELECTRICAL CONDUCTIVITY, ELECTRICAL PROPERTIES, ELECTRONS, HIGH TEMPERATURE, IONS, OXYGEN, POLARIZATION, SINGLE CRYSTALS, TITANIUM COMPOUNDS, TRANSPORT PROPERTIES, VACUUM APPARATUS, ZIRCONIUM COMPOUNDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE