Structural and spectroscopic characterization of Al2−x Cr x O3 powders obtained by polymeric precursor method

Al2O3 and Al2−xCrxO3 (x = 0.01, 0.02 and 0.04) powders have been synthesized by the polymeric precursors method. A study of the structural evolution of crystalline phases corresponding to the obtained powders was accomplished through X-Ray Diffraction and UV-vis spectroscopy (reflectance spectra an...

ver descrição completa

Na minha lista:
Detalhes bibliográficos
Principais autores: Cava, Sérgio, Benincá, Renata, Tebcherani, Sérgio Mazurek, Souza, Iedo A., Paskocimas, Carlos Alberto, Silva, Elson Longo da, Varela, José A.
Formato: article
Idioma:English
Publicado em: Springer
Assuntos:
Al2O3
Al2−xCrxO3
Phase transition
Powder synthesis
Spectroscopy
Endereço do item:https://repositorio.ufrn.br/handle/123456789/32210
Tags: Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
id ri-123456789-32210
record_format dspace
spelling ri-123456789-322102022-01-12T15:15:23Z Structural and spectroscopic characterization of Al2−x Cr x O3 powders obtained by polymeric precursor method Cava, Sérgio Benincá, Renata Tebcherani, Sérgio Mazurek Souza, Iedo A. Paskocimas, Carlos Alberto Silva, Elson Longo da Varela, José A. Al2O3 Al2−xCrxO3 Phase transition Powder synthesis Spectroscopy Al2O3 and Al2−xCrxO3 (x = 0.01, 0.02 and 0.04) powders have been synthesized by the polymeric precursors method. A study of the structural evolution of crystalline phases corresponding to the obtained powders was accomplished through X-Ray Diffraction and UV-vis spectroscopy (reflectance spectra and CIEL∗a∗b∗ color data). The obtained results allow to identify the γ -Al2O3 to α-Al2O3 phase transition. The single-phase α-Al2O3 powder was obtained after heat treatment at 1050 ◦C for 2 h. The results show that the green to red color transition and ruby luminescence lines observed for the powders of Al2−xCrxO3 are related to the γ to α-Al2O3 phase transition and the temperature and time range for such transition depends on the chromium content 2021-04-14T20:09:43Z 2021-04-14T20:09:43Z 2007-03-21 article CAVA, Sergio; BENINCÁ, Renata; TEBCHERANI, Sergio M.; SOUZA, Iedo A.; PASKOCIMAS, Carlos A.; LONGO, Elson; VARELA, José A.. Structural and spectroscopic characterization of Al2−x Cr x O3 powders obtained by polymeric precursor method. Journal Of Sol-Gel Science And Technology, [S.L.], v. 43, n. 1, p. 131-136, 21 mar. 2007. Disponível em: https://link.springer.com/article/10.1007/s10971-007-1541-y. Acesso em: 09 mar. 2021. http://dx.doi.org/10.1007/s10971-007-1541-y. 10.1007/s10971-007-1541-y. 0928-0707 1573-4846 https://repositorio.ufrn.br/handle/123456789/32210 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Springer
institution Repositório Institucional
collection RI - UFRN
language English
topic Al2O3
Al2−xCrxO3
Phase transition
Powder synthesis
Spectroscopy
spellingShingle Al2O3
Al2−xCrxO3
Phase transition
Powder synthesis
Spectroscopy
Cava, Sérgio
Benincá, Renata
Tebcherani, Sérgio Mazurek
Souza, Iedo A.
Paskocimas, Carlos Alberto
Silva, Elson Longo da
Varela, José A.
Structural and spectroscopic characterization of Al2−x Cr x O3 powders obtained by polymeric precursor method
description Al2O3 and Al2−xCrxO3 (x = 0.01, 0.02 and 0.04) powders have been synthesized by the polymeric precursors method. A study of the structural evolution of crystalline phases corresponding to the obtained powders was accomplished through X-Ray Diffraction and UV-vis spectroscopy (reflectance spectra and CIEL∗a∗b∗ color data). The obtained results allow to identify the γ -Al2O3 to α-Al2O3 phase transition. The single-phase α-Al2O3 powder was obtained after heat treatment at 1050 ◦C for 2 h. The results show that the green to red color transition and ruby luminescence lines observed for the powders of Al2−xCrxO3 are related to the γ to α-Al2O3 phase transition and the temperature and time range for such transition depends on the chromium content
format article
author Cava, Sérgio
Benincá, Renata
Tebcherani, Sérgio Mazurek
Souza, Iedo A.
Paskocimas, Carlos Alberto
Silva, Elson Longo da
Varela, José A.
author_facet Cava, Sérgio
Benincá, Renata
Tebcherani, Sérgio Mazurek
Souza, Iedo A.
Paskocimas, Carlos Alberto
Silva, Elson Longo da
Varela, José A.
author_sort Cava, Sérgio
title Structural and spectroscopic characterization of Al2−x Cr x O3 powders obtained by polymeric precursor method
title_short Structural and spectroscopic characterization of Al2−x Cr x O3 powders obtained by polymeric precursor method
title_full Structural and spectroscopic characterization of Al2−x Cr x O3 powders obtained by polymeric precursor method
title_fullStr Structural and spectroscopic characterization of Al2−x Cr x O3 powders obtained by polymeric precursor method
title_full_unstemmed Structural and spectroscopic characterization of Al2−x Cr x O3 powders obtained by polymeric precursor method
title_sort structural and spectroscopic characterization of al2−x cr x o3 powders obtained by polymeric precursor method
publisher Springer
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/32210
work_keys_str_mv AT cavasergio structuralandspectroscopiccharacterizationofal2xcrxo3powdersobtainedbypolymericprecursormethod
AT benincarenata structuralandspectroscopiccharacterizationofal2xcrxo3powdersobtainedbypolymericprecursormethod
AT tebcheranisergiomazurek structuralandspectroscopiccharacterizationofal2xcrxo3powdersobtainedbypolymericprecursormethod
AT souzaiedoa structuralandspectroscopiccharacterizationofal2xcrxo3powdersobtainedbypolymericprecursormethod
AT paskocimascarlosalberto structuralandspectroscopiccharacterizationofal2xcrxo3powdersobtainedbypolymericprecursormethod
AT silvaelsonlongoda structuralandspectroscopiccharacterizationofal2xcrxo3powdersobtainedbypolymericprecursormethod
AT varelajosea structuralandspectroscopiccharacterizationofal2xcrxo3powdersobtainedbypolymericprecursormethod
_version_ 1773957466129694720

Registros relacionados