Accession Number : ADP007748
Title : Microstructural Evolution of YBa2Cu3O7-x Using Microwave Energy,
Corporate Author : FLORIDA UNIV GAINESVILLE DEPT OF MATERIALS SCIENCE AND ENGINEERING
Personal Author(s) : Cozzi, A. D. ; Jones, D. K. ; Fathi, Z. ; Clark, D. E.
Report Date : 27 APR 1992
Pagination or Media Count : 8
Abstract : Discs of YBa2Cu3 O sub 7-x were sintered at 2.45 GHz in a Raytheon modelQMP2101B-6 microwave oven using hybrid heating. Heating YBa2Cu3 O sub 7-x solely by microwaves is feasible, but a silicon carbide susceptor was used to insulate the discs and provide a more uniform thermal environment. In order to begin with a uniform green microstructure, the discs were slip-cast from a non-aqueous dispersion containing fine YBa2Cu3 O sub 7-x powder. The effects of varying times and temperatures on the microstructural uniformity, densification, and grain growth were investigated using optical and quantitative microscopy.
Descriptors : *MICROWAVES, *YTTRIUM ALLOYS, *SINTERING, CARBIDES, DISPERSIONS, ENVIRONMENTS, FINES, GRAIN GROWTH, HEATING, MICROSCOPY, MICROSTRUCTURE, MICROWAVE OVENS, POWDERS, SILICON, SILICON CARBIDES, TEMPERATURE, UNIFORMS, SUPERCONDUCTIVITY, SUPERCONDUCTORS, SYMPOSIA.
Subject Categories : Fabrication Metallurgy
Radiofrequency Wave Propagation
Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE