Formation of Aluminum Titanate with Small Additions of MgO and SiO2
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
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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Materials research (São Carlos. Online) |
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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 |
_version_ |
1754212668017737728 |