Accession Number : AD0715006
Title : Determination of Oxygen Diffusion Coefficients in Tungsten Oxide.
Descriptive Note : Technical rept.,
Corporate Author : CINCINNATI UNIV OHIO DEPT OF MATERIALS SCIENCE AND METALLURGICAL ENGINEERING
Personal Author(s) : Sikka,V. K. ; Rosa,C. J.
Report Date : AUG 1970
Pagination or Media Count : 54
Abstract : 'Interruption Kinetic Technique' experiments carried out on tungsten oxide films formed on tungsten yield the expression for the diffusion coefficient of oxygen anion vacancies for the temperature range 568 - 908C. Calculations are made for the concentration of oxygen vacancies, for their free energy of formation and for ionic conductivity in tungsten oxide. Deviations from stoichiometry in the oxide are plotted against temperature on the available W-O phase diagram. (Author)
Descriptors : (*TUNGSTEN, *OXIDATION), (*TUNGSTEN COMPOUNDS, DIFFUSION), (*OXYGEN, *DIFFUSION), KINETIC THEORY, CRYSTAL DEFECTS, PHASE DIAGRAMS
Subject Categories : Physical Chemistry
Metallurgy and Metallography
Distribution Statement : APPROVED FOR PUBLIC RELEASE