Standard transition aluminas. Electron microscopy studies



Título del documento: Standard transition aluminas. Electron microscopy studies
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312447
ISSN: 1516-1439
Autores: 1
2
Instituciones: 1Universidade de Sao Paulo, Escola Politecnica, Sao Paulo. Brasil
2Universidade de Sao Paulo, Instituto de Fisica, Sao Paulo. Brasil
Año:
Periodo: Oct
Volumen: 3
Número: 4
Paginación: 104-114
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Descriptivo
Resumen en inglés The aim of this paper is to present the results of characterization of the particle shapes of six standard transition aluminas samples using transmission and scanning electron microscopies; selected area electron diffraction, in parallel with X-ray powder diffraction were used for confirmation of the different transition aluminas types. The transition aluminas - chi; kappa; gamma; theta; delta; and eta were supplied by ALCOA Central Laboratory. The chi-; kappa-;gamma- and delta-Al203 microcrystals are pseudomorphs from their respective precursors gibbsite and boehmite. However, theta-Al203 microcrystals are not pseudomorphs after the standard delta-Al203 sample. Also, eta-Al203 are not pseudomorphs after bayerite somatoids
Disciplinas: Ingeniería,
Física y astronomía
Palabras clave: Ingeniería de materiales,
Ingeniería electrónica,
Física de materia condensada,
Alúminas de transición,
Microscopía electrónica
Keyword: Engineering,
Physics and astronomy,
Electronic engineering,
Materials engineering,
Condensed matter physics,
Transition aluminas,
Electron microscopy
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