Formation of Aluminum Titanate with Small Additions of MgO and SiO2

Detalhes bibliográficos
Autor(a) principal: Guedes-Silva,Cecilia Chaves
Data de Publicação: 2016
Outros Autores: Carvalho,Flávio Machado de Souza, Ferreira,Thiago dos Santos, Genova,Luis Antonio
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=S1516-14392016000200384
Resumo: The formation of aluminum titanate was investigated by isothermal treatments of samples obtained from equimolar mixtures of alumina and titania, containing small amounts of silica and magnesia. Results of differential thermal analysis and Rietveld refinements of data collected by X-ray powder diffraction (XRPD) showed that additions of silica in amounts used in this work did not influence the formation of aluminum titanate. However, the presence of magnesia favored the formation of aluminum titanate in two steps, first one by incorporating Mg2+ into Al2TiO5 lattice during its initial formation, and the second one by accelerating the Al2TiO5 formation, contributing to large quantities of this phase. MgO doped samples have also developed a more suitable microstructure for stabilizing of Al2TiO5, what make them promising for applications such as thermal barriers, internal combustion engines and support material for catalyst.
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spelling Formation of Aluminum Titanate with Small Additions of MgO and SiO2aluminum titanateRietveldmagnesiasilicaThe formation of aluminum titanate was investigated by isothermal treatments of samples obtained from equimolar mixtures of alumina and titania, containing small amounts of silica and magnesia. Results of differential thermal analysis and Rietveld refinements of data collected by X-ray powder diffraction (XRPD) showed that additions of silica in amounts used in this work did not influence the formation of aluminum titanate. However, the presence of magnesia favored the formation of aluminum titanate in two steps, first one by incorporating Mg2+ into Al2TiO5 lattice during its initial formation, and the second one by accelerating the Al2TiO5 formation, contributing to large quantities of this phase. MgO doped samples have also developed a more suitable microstructure for stabilizing of Al2TiO5, what make them promising for applications such as thermal barriers, internal combustion engines and support material for catalyst.ABM, ABC, ABPol2016-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000200384Materials Research v.19 n.2 2016reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-MR-2015-0498info:eu-repo/semantics/openAccessGuedes-Silva,Cecilia ChavesCarvalho,Flávio Machado de SouzaFerreira,Thiago dos SantosGenova,Luis Antonioeng2016-04-01T00:00:00Zoai:scielo:S1516-14392016000200384Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2016-04-01T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Formation of Aluminum Titanate with Small Additions of MgO and SiO2
title Formation of Aluminum Titanate with Small Additions of MgO and SiO2
spellingShingle Formation of Aluminum Titanate with Small Additions of MgO and SiO2
Guedes-Silva,Cecilia Chaves
aluminum titanate
Rietveld
magnesia
silica
title_short Formation of Aluminum Titanate with Small Additions of MgO and SiO2
title_full Formation of Aluminum Titanate with Small Additions of MgO and SiO2
title_fullStr Formation of Aluminum Titanate with Small Additions of MgO and SiO2
title_full_unstemmed Formation of Aluminum Titanate with Small Additions of MgO and SiO2
title_sort Formation of Aluminum Titanate with Small Additions of MgO and SiO2
author Guedes-Silva,Cecilia Chaves
author_facet Guedes-Silva,Cecilia Chaves
Carvalho,Flávio Machado de Souza
Ferreira,Thiago dos Santos
Genova,Luis Antonio
author_role author
author2 Carvalho,Flávio Machado de Souza
Ferreira,Thiago dos Santos
Genova,Luis Antonio
author2_role author
author
author
dc.contributor.author.fl_str_mv Guedes-Silva,Cecilia Chaves
Carvalho,Flávio Machado de Souza
Ferreira,Thiago dos Santos
Genova,Luis Antonio
dc.subject.por.fl_str_mv aluminum titanate
Rietveld
magnesia
silica
topic aluminum titanate
Rietveld
magnesia
silica
description The formation of aluminum titanate was investigated by isothermal treatments of samples obtained from equimolar mixtures of alumina and titania, containing small amounts of silica and magnesia. Results of differential thermal analysis and Rietveld refinements of data collected by X-ray powder diffraction (XRPD) showed that additions of silica in amounts used in this work did not influence the formation of aluminum titanate. However, the presence of magnesia favored the formation of aluminum titanate in two steps, first one by incorporating Mg2+ into Al2TiO5 lattice during its initial formation, and the second one by accelerating the Al2TiO5 formation, contributing to large quantities of this phase. MgO doped samples have also developed a more suitable microstructure for stabilizing of Al2TiO5, what make them promising for applications such as thermal barriers, internal combustion engines and support material for catalyst.
publishDate 2016
dc.date.none.fl_str_mv 2016-04-01
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=S1516-14392016000200384
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000200384
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-MR-2015-0498
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.19 n.2 2016
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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