Use of time domain nuclear magnetic resonance relaxometry to monitor the effect of magnetic field on the copper corrosion rate in real time.
| dc.contributor | ELAINE CRISTINA PARIS, CNPDIA; LUIZ ALBERTO COLNAGO, CNPDIA. | |
| dc.creator | MITRE, C. I. N. | |
| dc.creator | PARIS, E. C. | |
| dc.creator | LOBO, C. M. S. | |
| dc.creator | ROTH, C. | |
| dc.creator | COLNAGO, L. A. | |
| dc.date | 2022-04-13T11:00:52Z | |
| dc.date | 2022-04-13T11:00:52Z | |
| dc.date | 2022-04-04 | |
| dc.date | 2022 | |
| dc.date.accessioned | 2026-07-07T04:28:51Z | |
| dc.description | 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. | |
| dc.format | 11 p. | |
| dc.identifier | Magneto Chemistry, v. 8, 40, 2022. | |
| dc.identifier | 2312-7481 | |
| dc.identifier | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1141768 | |
| dc.identifier | 10.3390/magnetochemistry800040 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/462832 | |
| dc.language | eng | |
| dc.rights | openAccess | |
| dc.subject | Copper corrosion | |
| dc.subject | Time-domain NMR relaxometry | |
| dc.subject | Magnetocorrosion | |
| dc.title | Use of time domain nuclear magnetic resonance relaxometry to monitor the effect of magnetic field on the copper corrosion rate in real time. | |
| dc.type | Artigo de periódico |