| Journal: | Materials research |
| Database: | PERIÓDICA |
| System number: | 000312447 |
| ISSN: | 1516-1439 |
| Authors: | Santos, P. Souza1 Santos, H. Souza2 Toledo, S.P |
| Institutions: | 1Universidade de Sao Paulo, Escola Politecnica, Sao Paulo. Brasil 2Universidade de Sao Paulo, Instituto de Fisica, Sao Paulo. Brasil |
| Year: | 2000 |
| Season: | Oct |
| Volumen: | 3 |
| Number: | 4 |
| Pages: | 104-114 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Descriptivo |
| English abstract | 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 |
| Disciplines: | Ingeniería, Física y astronomía |
| Keyword: | 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 |
| Full text: | Texto completo (Ver HTML) |
