Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy

Detalhes bibliográficos
Autor(a) principal: Florêncio, Odila
Data de Publicação: 2006
Outros Autores: Silva Jr., Paulo Sergio da, Stefanini, Thais França, Grandini, Carlos Roberto [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1516-14392006000400015
http://hdl.handle.net/11449/8420
Resumo: Mechanical spectroscopy measurements have been extensively used in the last decades to obtain information about many aspects of the behavior of solutes in metallic materials. Metals of body-centered cubic lattice that contain heavy interstitial elements (oxygen, nitrogen and carbon) in solid solution, present anelastic relaxation peaks when submitted to cyclic tensions, due to process know stress-induced ordering. Internal friction and frequency as a function of temperature were performed between 300 K and 650 K in a polycrystalline sample of Nb, for three distinct conditions, using a torsion pendulum inverted Kê-type operating in a frequency oscillation between 1Hz and 10 Hz range, with a heating rate of 1 K/min and pressure lower than 2 x 10-5 mbar. The experimental spectra obtained for each condition of the sample, were decomposed by the successive subtraction method in elementary Debye peaks. The following metal-interstitial interactions were identified: Nb-O and Nb-N for all conditions of the sample. From the anelastic relaxation parameters obtained (relaxation strength, peak temperature, activation energy and relaxation time) and lattice parameter (obtained from x ray diffraction), the determination of the oxygen and nitrogen interstitial diffusion coefficient in Nb was possible, for each condition of the sample.
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spelling Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopyinterstitial diffusionniobiuminternal frictionoxygennitrogenMechanical spectroscopy measurements have been extensively used in the last decades to obtain information about many aspects of the behavior of solutes in metallic materials. Metals of body-centered cubic lattice that contain heavy interstitial elements (oxygen, nitrogen and carbon) in solid solution, present anelastic relaxation peaks when submitted to cyclic tensions, due to process know stress-induced ordering. Internal friction and frequency as a function of temperature were performed between 300 K and 650 K in a polycrystalline sample of Nb, for three distinct conditions, using a torsion pendulum inverted Kê-type operating in a frequency oscillation between 1Hz and 10 Hz range, with a heating rate of 1 K/min and pressure lower than 2 x 10-5 mbar. The experimental spectra obtained for each condition of the sample, were decomposed by the successive subtraction method in elementary Debye peaks. The following metal-interstitial interactions were identified: Nb-O and Nb-N for all conditions of the sample. From the anelastic relaxation parameters obtained (relaxation strength, peak temperature, activation energy and relaxation time) and lattice parameter (obtained from x ray diffraction), the determination of the oxygen and nitrogen interstitial diffusion coefficient in Nb was possible, for each condition of the sample.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Universidade Federal de São Carlos (UFSCar) Centro de Ciências Exatas e de Tecnologia Departamento de FísicaUNESP Faculdade de CiênciasUNESP Faculdade de CiênciasABM, ABC, ABPolUniversidade Federal de São Carlos (UFSCar)Universidade Estadual Paulista (Unesp)Florêncio, OdilaSilva Jr., Paulo Sergio daStefanini, Thais FrançaGrandini, Carlos Roberto [UNESP]2014-05-20T13:26:13Z2014-05-20T13:26:13Z2006-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article431-434application/pdfhttp://dx.doi.org/10.1590/S1516-14392006000400015Materials Research. ABM, ABC, ABPol, v. 9, n. 4, p. 431-434, 2006.1516-1439http://hdl.handle.net/11449/842010.1590/S1516-14392006000400015S1516-14392006000400015S1516-14392006000400015.pdf29499838674183380000-0002-3336-309XSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research1.1030,398info:eu-repo/semantics/openAccess2024-04-25T17:40:08Zoai:repositorio.unesp.br:11449/8420Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:03:03.252343Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
title Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
spellingShingle Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
Florêncio, Odila
interstitial diffusion
niobium
internal friction
oxygen
nitrogen
title_short Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
title_full Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
title_fullStr Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
title_full_unstemmed Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
title_sort Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
author Florêncio, Odila
author_facet Florêncio, Odila
Silva Jr., Paulo Sergio da
Stefanini, Thais França
Grandini, Carlos Roberto [UNESP]
author_role author
author2 Silva Jr., Paulo Sergio da
Stefanini, Thais França
Grandini, Carlos Roberto [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de São Carlos (UFSCar)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Florêncio, Odila
Silva Jr., Paulo Sergio da
Stefanini, Thais França
Grandini, Carlos Roberto [UNESP]
dc.subject.por.fl_str_mv interstitial diffusion
niobium
internal friction
oxygen
nitrogen
topic interstitial diffusion
niobium
internal friction
oxygen
nitrogen
description Mechanical spectroscopy measurements have been extensively used in the last decades to obtain information about many aspects of the behavior of solutes in metallic materials. Metals of body-centered cubic lattice that contain heavy interstitial elements (oxygen, nitrogen and carbon) in solid solution, present anelastic relaxation peaks when submitted to cyclic tensions, due to process know stress-induced ordering. Internal friction and frequency as a function of temperature were performed between 300 K and 650 K in a polycrystalline sample of Nb, for three distinct conditions, using a torsion pendulum inverted Kê-type operating in a frequency oscillation between 1Hz and 10 Hz range, with a heating rate of 1 K/min and pressure lower than 2 x 10-5 mbar. The experimental spectra obtained for each condition of the sample, were decomposed by the successive subtraction method in elementary Debye peaks. The following metal-interstitial interactions were identified: Nb-O and Nb-N for all conditions of the sample. From the anelastic relaxation parameters obtained (relaxation strength, peak temperature, activation energy and relaxation time) and lattice parameter (obtained from x ray diffraction), the determination of the oxygen and nitrogen interstitial diffusion coefficient in Nb was possible, for each condition of the sample.
publishDate 2006
dc.date.none.fl_str_mv 2006-12-01
2014-05-20T13:26:13Z
2014-05-20T13:26:13Z
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://dx.doi.org/10.1590/S1516-14392006000400015
Materials Research. ABM, ABC, ABPol, v. 9, n. 4, p. 431-434, 2006.
1516-1439
http://hdl.handle.net/11449/8420
10.1590/S1516-14392006000400015
S1516-14392006000400015
S1516-14392006000400015.pdf
2949983867418338
0000-0002-3336-309X
url http://dx.doi.org/10.1590/S1516-14392006000400015
http://hdl.handle.net/11449/8420
identifier_str_mv Materials Research. ABM, ABC, ABPol, v. 9, n. 4, p. 431-434, 2006.
1516-1439
10.1590/S1516-14392006000400015
S1516-14392006000400015
S1516-14392006000400015.pdf
2949983867418338
0000-0002-3336-309X
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Research
1.103
0,398
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 431-434
application/pdf
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv SciELO
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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