Particle characteristics’ influence on FLASH sintering of potassium sodium niobate
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/128457 |
Resumo: | POCI-01-0247-FEDER-029078 SFRH/PD/BD/128411/2017 |
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7160 |
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Particle characteristics’ influence on FLASH sintering of potassium sodium niobateA relationship with conduction mechanismsCeramicsConduction mechanismsFLASH sinteringFLASH temperatureImpuritiesKNaNbOKNNParticle sizeSingle crystalsMaterials Science(all)Condensed Matter PhysicsPOCI-01-0247-FEDER-029078 SFRH/PD/BD/128411/2017The considerable decrease in temperature and time makes FLASH sintering a more sustainable alternative for materials processing. FLASH also becomes relevant if volatile elements are part of the material to be processed, as in alkali‐based piezoelectrics like the promising lead‐free K0.5Na0.5NbO3 (KNN). Due to the volatile nature of K and Na, KNN is difficult to process by conventional sintering. Although some studies have been undertaken, much remains to be understood to properly engineer the FLASH sintering process of KNN. In this work, the effect of FLASH temperature, TF, is studied as a function of the particle size and impurity content of KNN powders. Differences are demonstrated: while the particle size and impurity degree markedly influence TF, they do not significantly affect the densification and grain growth processes. The conductivity of KNN FLASH‐sintered ceramics and KNN single crystals (SCs) is compared to elucidate the role of particles’ surface conduction. When particles’ surfaces are not present, as in the case of SCs, the FLASH process requires higher temperatures and conductivity values. These results have implications in understanding FLASH sintering towards a more sustainable processing of lead‐free piezoelectrics.CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)RUNSerrazina, RicardoRibeiro, CamilaCosta, Maria E. V.Pereira, LuisVilarinho, Paula M.Senos, Ana M. O. R.2021-11-29T23:39:36Z2021-03-092021-03-09T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/128457eng1996-1944PURE: 34472521https://doi.org/10.3390/ma14051321info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T05:08:01Zoai:run.unl.pt:10362/128457Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:46:18.427383Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Particle characteristics’ influence on FLASH sintering of potassium sodium niobate A relationship with conduction mechanisms |
title |
Particle characteristics’ influence on FLASH sintering of potassium sodium niobate |
spellingShingle |
Particle characteristics’ influence on FLASH sintering of potassium sodium niobate Serrazina, Ricardo Ceramics Conduction mechanisms FLASH sintering FLASH temperature Impurities KNaNbO KNN Particle size Single crystals Materials Science(all) Condensed Matter Physics |
title_short |
Particle characteristics’ influence on FLASH sintering of potassium sodium niobate |
title_full |
Particle characteristics’ influence on FLASH sintering of potassium sodium niobate |
title_fullStr |
Particle characteristics’ influence on FLASH sintering of potassium sodium niobate |
title_full_unstemmed |
Particle characteristics’ influence on FLASH sintering of potassium sodium niobate |
title_sort |
Particle characteristics’ influence on FLASH sintering of potassium sodium niobate |
author |
Serrazina, Ricardo |
author_facet |
Serrazina, Ricardo Ribeiro, Camila Costa, Maria E. V. Pereira, Luis Vilarinho, Paula M. Senos, Ana M. O. R. |
author_role |
author |
author2 |
Ribeiro, Camila Costa, Maria E. V. Pereira, Luis Vilarinho, Paula M. Senos, Ana M. O. R. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N) RUN |
dc.contributor.author.fl_str_mv |
Serrazina, Ricardo Ribeiro, Camila Costa, Maria E. V. Pereira, Luis Vilarinho, Paula M. Senos, Ana M. O. R. |
dc.subject.por.fl_str_mv |
Ceramics Conduction mechanisms FLASH sintering FLASH temperature Impurities KNaNbO KNN Particle size Single crystals Materials Science(all) Condensed Matter Physics |
topic |
Ceramics Conduction mechanisms FLASH sintering FLASH temperature Impurities KNaNbO KNN Particle size Single crystals Materials Science(all) Condensed Matter Physics |
description |
POCI-01-0247-FEDER-029078 SFRH/PD/BD/128411/2017 |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-11-29T23:39:36Z 2021-03-09 2021-03-09T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10362/128457 |
url |
http://hdl.handle.net/10362/128457 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1996-1944 PURE: 34472521 https://doi.org/10.3390/ma14051321 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799138066990891008 |