Accession Number : AD0744517

Title :   Intrinsic Studies of Materials - Sintering Mechanisms of Defect Oxides.

Descriptive Note : Final rept. 5 Oct 66-31 Jul 71,

Corporate Author : NORTHWESTERN UNIV EVANSTON ILL DEPT OF MATERIALS SCIENCE

Personal Author(s) : Johnson,D. Lynn

Report Date : JUN 1972

Pagination or Media Count : 9

Abstract : The report summarizes an investigation of the influence of deviations from stoichiometry on the sintering of the defect oxide, CoO. The eleven conclusions reached in this investigation are listed in this report and among them are: (1) CoO sinters according to volume diffusion kinetics in the initial and intermediate stages, (2) The sintering rate is increased with increasing oxygen partial pressure above 0.001 atmosphere, (3) The calculated volume diffusion coefficients lie between the tracer values for Co and O in single crystals. (Author)

Descriptors :   (*CERAMIC MATERIALS, SINTERING), COBALT COMPOUNDS, OXIDES, REACTION KINETICS, DIFFUSION, HEAT OF ACTIVATION, POROSITY, MICROSTRUCTURE

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE