Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach

Detalhes bibliográficos
Autor(a) principal: Deo, Leonardo Pratvieira
Data de Publicação: 2022
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/50981
Resumo: Gibbs’ free energy of formation is considered a good guidance in order to describe or predict the phases formation within the standard state; however, many materials are produced out of their equilibrium conditions, and consequently, metastable phases are formed. There is no universal knowledge related to metastable phases formation; therefore, this paper presents considerations in order to elucidate some understanding about two metastable phases found in a rapid quenched alloy from Ni-Nb-Zr system during the solidification process. The analyzed alloy, namely Ni61.6Nb33.1Zr5.3 (at.%) was previously synthesized and characterized in two previous works. The hypotheses presented here consider free energies of formation among phases which compete to nucleate, stability of crystalline phases at nanoscale and atomic pair preferences during the nucleation. The understanding related to metastable phases formation may produce and improve promising technological materials.
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spelling Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approachNi-Nb-Zr (Niobium-Nickel-Zirconium)Equilibrium phasesRemnant stabilityGibbs’ free energy of formation is considered a good guidance in order to describe or predict the phases formation within the standard state; however, many materials are produced out of their equilibrium conditions, and consequently, metastable phases are formed. There is no universal knowledge related to metastable phases formation; therefore, this paper presents considerations in order to elucidate some understanding about two metastable phases found in a rapid quenched alloy from Ni-Nb-Zr system during the solidification process. The analyzed alloy, namely Ni61.6Nb33.1Zr5.3 (at.%) was previously synthesized and characterized in two previous works. The hypotheses presented here consider free energies of formation among phases which compete to nucleate, stability of crystalline phases at nanoscale and atomic pair preferences during the nucleation. The understanding related to metastable phases formation may produce and improve promising technological materials.Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Câmpus de Araraquara, Instituto de Química2022-08-16T16:34:40Z2022-08-16T16:34:40Z2022-04-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfDEO, L. P. Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach. Eclética Química Journal, [S.l.], v. 47, n. 2, p. 97-102, 2022. DOI: 10.26850/1678-4618eqj.v47.2.2022.p97-102.http://repositorio.ufla.br/jspui/handle/1/50981Eclética Química Journalreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessDeo, Leonardo Pratvieiraeng2022-08-16T16:34:40Zoai:localhost:1/50981Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2022-08-16T16:34:40Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach
title Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach
spellingShingle Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach
Deo, Leonardo Pratvieira
Ni-Nb-Zr (Niobium-Nickel-Zirconium)
Equilibrium phases
Remnant stability
title_short Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach
title_full Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach
title_fullStr Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach
title_full_unstemmed Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach
title_sort Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach
author Deo, Leonardo Pratvieira
author_facet Deo, Leonardo Pratvieira
author_role author
dc.contributor.author.fl_str_mv Deo, Leonardo Pratvieira
dc.subject.por.fl_str_mv Ni-Nb-Zr (Niobium-Nickel-Zirconium)
Equilibrium phases
Remnant stability
topic Ni-Nb-Zr (Niobium-Nickel-Zirconium)
Equilibrium phases
Remnant stability
description Gibbs’ free energy of formation is considered a good guidance in order to describe or predict the phases formation within the standard state; however, many materials are produced out of their equilibrium conditions, and consequently, metastable phases are formed. There is no universal knowledge related to metastable phases formation; therefore, this paper presents considerations in order to elucidate some understanding about two metastable phases found in a rapid quenched alloy from Ni-Nb-Zr system during the solidification process. The analyzed alloy, namely Ni61.6Nb33.1Zr5.3 (at.%) was previously synthesized and characterized in two previous works. The hypotheses presented here consider free energies of formation among phases which compete to nucleate, stability of crystalline phases at nanoscale and atomic pair preferences during the nucleation. The understanding related to metastable phases formation may produce and improve promising technological materials.
publishDate 2022
dc.date.none.fl_str_mv 2022-08-16T16:34:40Z
2022-08-16T16:34:40Z
2022-04-06
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 DEO, L. P. Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach. Eclética Química Journal, [S.l.], v. 47, n. 2, p. 97-102, 2022. DOI: 10.26850/1678-4618eqj.v47.2.2022.p97-102.
http://repositorio.ufla.br/jspui/handle/1/50981
identifier_str_mv DEO, L. P. Ni-Nb-Zr metastable phases formation, a thermodynamic and chemical approach. Eclética Química Journal, [S.l.], v. 47, n. 2, p. 97-102, 2022. DOI: 10.26850/1678-4618eqj.v47.2.2022.p97-102.
url http://repositorio.ufla.br/jspui/handle/1/50981
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Câmpus de Araraquara, Instituto de Química
publisher.none.fl_str_mv Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Câmpus de Araraquara, Instituto de Química
dc.source.none.fl_str_mv Eclética Química Journal
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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