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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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Embrapa Instrumentação (CNPDIA) |
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