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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
04/04/2022 |
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Data da última atualização: |
23/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MITRE, C. I. N.; PARIS, E. C.; LOBO, C. M. S.; ROTH, C.; COLNAGO, L. A. |
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Afiliação: |
ELAINE CRISTINA PARIS, CNPDIA; LUIZ ALBERTO COLNAGO, CNPDIA. |
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Título: |
Use of time domain nuclear magnetic resonance relaxometry to monitor the rffect of magnetic field on the copper corrosion rate in real time. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Magneto Chemistry, v. 8, 40, 2022. |
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Páginas: |
11 p. |
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ISSN: |
2312-7481 |
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DOI: |
10.3390/magnetochemistry800040 |
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Idioma: |
Inglês |
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Conteúdo: |
The corrosion of metals is a major problem of modern societies, demanding new technologies and studies to understand and minimize it. Here we evaluated the effect of a magnetic field (B) on the corrosion of copper in aqueous HCl solution under open circuit potential. The corrosion product, Cu2+, is a paramagnetic ion and its concentration in the solution was determined in real time in the corrosion cell by time-domain NMR relaxometry. The results show that the magnetic field (B = 0.23 T) of the time-domain NMR instrument reduces the corrosion rate by almost 50%, in comparison to when the corrosion reaction is performed in the absence of B. Atomic force microscopy and X-ray diffraction results of the analysis of the corroded surfaces reveal a detect-able CuCl phase and an altered morphology when B is present. The protective effect of B was explained by magnetic forces that maintain the Cu2+ in the solution/metal interface for a longer time, hindering the arrival of the new corrosive agents, and leading to the formation of a CuCl phase, which may contribute to the rougher surface. The time-domain NMR method proved to be useful to study the effect of B in the corrosion of other metals or other corrosive liquid media when the reactions produce or consume paramagnetic ions. |
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Palavras-Chave: |
Copper corrosion; Magnetocorrosion; Time-domain NMR relaxometry. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1141768/1/P-Use-of-time-domain-nuclear-magnetic-resonance-relaxometry-....pdf
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Marc: |
LEADER 02038naa a2200241 a 4500
001 2141768
005 2024-01-23
008 2022 bl uuuu u00u1 u #d
022 $a2312-7481
024 7 $a10.3390/magnetochemistry800040$2DOI
100 1 $aMITRE, C. I. N.
245 $aUse of time domain nuclear magnetic resonance relaxometry to monitor the rffect of magnetic field on the copper corrosion rate in real time.$h[electronic resource]
260 $c2022
300 $a11 p.
520 $aThe corrosion of metals is a major problem of modern societies, demanding new technologies and studies to understand and minimize it. Here we evaluated the effect of a magnetic field (B) on the corrosion of copper in aqueous HCl solution under open circuit potential. The corrosion product, Cu2+, is a paramagnetic ion and its concentration in the solution was determined in real time in the corrosion cell by time-domain NMR relaxometry. The results show that the magnetic field (B = 0.23 T) of the time-domain NMR instrument reduces the corrosion rate by almost 50%, in comparison to when the corrosion reaction is performed in the absence of B. Atomic force microscopy and X-ray diffraction results of the analysis of the corroded surfaces reveal a detect-able CuCl phase and an altered morphology when B is present. The protective effect of B was explained by magnetic forces that maintain the Cu2+ in the solution/metal interface for a longer time, hindering the arrival of the new corrosive agents, and leading to the formation of a CuCl phase, which may contribute to the rougher surface. The time-domain NMR method proved to be useful to study the effect of B in the corrosion of other metals or other corrosive liquid media when the reactions produce or consume paramagnetic ions.
653 $aCopper corrosion
653 $aMagnetocorrosion
653 $aTime-domain NMR relaxometry
700 1 $aPARIS, E. C.
700 1 $aLOBO, C. M. S.
700 1 $aROTH, C.
700 1 $aCOLNAGO, L. A.
773 $tMagneto Chemistry$gv. 8, 40, 2022.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
21/02/2011 |
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Data da última atualização: |
07/03/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA, D. S.; SILVA, A. F.; FRANÇA, C. R. R. S.; SANTOS, A. P. G.; SANTOS, F. C.; LIMA, R. G.; MIRANDA, A. S. de. |
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Afiliação: |
DJANE SILVA OLIVEIRA, FACIAGRA; ALINEAUREA FLORENTINO SILVA, CPATSA; CARLA REGINA REGES SILVA FRANÇA; ANA PAULA GUIMARÃES SANTOS; FERNANDA COELHO SANTOS, UPE; ROSANA GOMES LIMA, UPE; AICANÃ SANTOS DE MIRANDA. |
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Título: |
Experiências de base agroecológica no Semiárido nordestino. II. Agrofloresta de D. Rita de Cássia Melo Araújo. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: CONGRESSO LATINOAMERICANO DE ETNOBIOLOGIA, 2.; SIMPÓSIO BRASILEIRO DE ENTOBIOLOGIA E ETNOECOLOGIA, 8.; ENCONTRO PERNAMBUCANO DE ETNOBIOLOGIA E ETNOECOLOGIA, 3., 2010, Recife. Anais... Recife: SBEE: SOLAE, 2010. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
O presente trabalho teve objetivo de sistematizar a experiência de base agroecológica. |
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Palavras-Chave: |
Agroecologia; Conversão agroecológica; Recursos naturais. |
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Thesagro: |
Comunidade Rural; Ecologia Florestal; Ecologia vegetal; Segurança Alimentar. |
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Thesaurus NAL: |
Food safety; Forest ecology; Plant ecology. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/27837/1/Aline1.pdf
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Marc: |
LEADER 01171nam a2200313 a 4500
001 1878031
005 2023-03-07
008 2010 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, D. S.
245 $aExperiências de base agroecológica no Semiárido nordestino. II. Agrofloresta de D. Rita de Cássia Melo Araújo.
260 $aIn: CONGRESSO LATINOAMERICANO DE ETNOBIOLOGIA, 2.; SIMPÓSIO BRASILEIRO DE ENTOBIOLOGIA E ETNOECOLOGIA, 8.; ENCONTRO PERNAMBUCANO DE ETNOBIOLOGIA E ETNOECOLOGIA, 3., 2010, Recife. Anais... Recife: SBEE: SOLAE$c2010
300 $c1 CD-ROM.
520 $aO presente trabalho teve objetivo de sistematizar a experiência de base agroecológica.
650 $aFood safety
650 $aForest ecology
650 $aPlant ecology
650 $aComunidade Rural
650 $aEcologia Florestal
650 $aEcologia vegetal
650 $aSegurança Alimentar
653 $aAgroecologia
653 $aConversão agroecológica
653 $aRecursos naturais
700 1 $aSILVA, A. F.
700 1 $aFRANÇA, C. R. R. S.
700 1 $aSANTOS, A. P. G.
700 1 $aSANTOS, F. C.
700 1 $aLIMA, R. G.
700 1 $aMIRANDA, A. S. de
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Embrapa Semiárido (CPATSA) |
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