Standard transition aluminas. Electron microscopy studies

Detalhes bibliográficos
Autor(a) principal: Santos,P. Souza
Data de Publicação: 2000
Outros Autores: Santos,H. Souza, Toledo,S.P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392000000400003
Resumo: 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-Al(2)0(3) microcrystals are pseudomorphs from their respective precursors gibbsite and boehmite. However, theta-Al(2)0(3) microcrystals are not pseudomorphs after the standard delta-Al(2)0(3) sample. Also, eta-Al(2)0(3) are not pseudomorphs after bayerite somatoids.
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spelling Standard transition aluminas. Electron microscopy studiestransition aluminasalumina precursorsgibbsiteelectron microscopiesThe 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-Al(2)0(3) microcrystals are pseudomorphs from their respective precursors gibbsite and boehmite. However, theta-Al(2)0(3) microcrystals are not pseudomorphs after the standard delta-Al(2)0(3) sample. Also, eta-Al(2)0(3) are not pseudomorphs after bayerite somatoids.ABM, ABC, ABPol2000-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392000000400003Materials Research v.3 n.4 2000reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392000000400003info:eu-repo/semantics/openAccessSantos,P. SouzaSantos,H. SouzaToledo,S.P.eng2001-04-04T00:00:00Zoai:scielo:S1516-14392000000400003Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2001-04-04T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Standard transition aluminas. Electron microscopy studies
title Standard transition aluminas. Electron microscopy studies
spellingShingle Standard transition aluminas. Electron microscopy studies
Santos,P. Souza
transition aluminas
alumina precursors
gibbsite
electron microscopies
title_short Standard transition aluminas. Electron microscopy studies
title_full Standard transition aluminas. Electron microscopy studies
title_fullStr Standard transition aluminas. Electron microscopy studies
title_full_unstemmed Standard transition aluminas. Electron microscopy studies
title_sort Standard transition aluminas. Electron microscopy studies
author Santos,P. Souza
author_facet Santos,P. Souza
Santos,H. Souza
Toledo,S.P.
author_role author
author2 Santos,H. Souza
Toledo,S.P.
author2_role author
author
dc.contributor.author.fl_str_mv Santos,P. Souza
Santos,H. Souza
Toledo,S.P.
dc.subject.por.fl_str_mv transition aluminas
alumina precursors
gibbsite
electron microscopies
topic transition aluminas
alumina precursors
gibbsite
electron microscopies
description 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-Al(2)0(3) microcrystals are pseudomorphs from their respective precursors gibbsite and boehmite. However, theta-Al(2)0(3) microcrystals are not pseudomorphs after the standard delta-Al(2)0(3) sample. Also, eta-Al(2)0(3) are not pseudomorphs after bayerite somatoids.
publishDate 2000
dc.date.none.fl_str_mv 2000-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392000000400003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392000000400003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392000000400003
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.3 n.4 2000
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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