Please use this identifier to cite or link to this item: doi:10.22028/D291-24114
Title: Espectroscopia vibracional das fases cristalográficas da mulita em função do trattamento térmico
Other Titles: Vibrational spectroscopy of the crystallografic phases of mullite as a function of the thermal treatment
Author(s): Bozano, Dorotéia F.
Simões, Maurício
Aegerter, Michel A.
Language: (Other)
Year of Publication: 1993
OPUS Source: Anais / 37° Congresso Brasileiro de Cerâmica : Curitiba ; 22 a 25 de majo de 1993 / Associação Brasileira de Cerâmica. - Vol. 2. - São Paulo, SP : Associação Brasileira de Cerâmica, 1993, S. 1079-1084
SWD key words: Spektroskopie
Thermomechanische Behandlung
DDC notations: 500 Science
Publikation type: Conference Paper
Abstract: -
A theoric model to obtain the vibrational energies of mullite (3Al2O3∙2SiO2) based on the subdivision of the crystalline structure in basic units of symetry AlO4, SiO4 and AlO6 is presented. The crystallografic phase evolution of mullite (3Al2O3∙2SiO2) prepared from polimeric and colloidal gels is studied as a function of the thermal treatment. Shifts and bands formation which occur in the infrared range of the absorption spectrum confirm the change in coordination of Si and Al atoms as the mullite orthorrombic structure is established.
Link to this record: urn:nbn:de:bsz:291-scidok-23307
Date of registration: 22-Jul-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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