6533b856fe1ef96bd12b27e4
RESEARCH PRODUCT
Thermogalvanic effects on the corrosion of copper in heavy brine LiBr solutions
Ramón Manuel Fernández DomeneMaría Encarnación Blasco TamaritDionisio Miguel García GarcíaJosé García Antónsubject
EISAnodic dissolutionChemistryGeneral Chemical EngineeringInorganic chemistryMetallurgychemistry.chemical_elementGeneral ChemistryCopperCopper lossCathodeINGENIERIA QUIMICAAnodeCorrosionDielectric spectroscopylaw.inventionElectroquímicachemistry.chemical_compoundBrineBromidelawGeneral Materials ScienceCopperPolarisationdescription
Thermogalvanic corrosion of copper in heavy brine LiBr solutions has been investigated using a zero-resistance ammeter (ZRA). The temperature gradients between copper electrodes immersed in the same LiBr solution result in the formation of thermogalvanic cells with hot anodes, leading to high and sustained thermogalvanic currents. Copper loss rates, calculated using Faraday's law, substantially exceed 0.025mmyear -1, a value regarded as the threshold of low corrosion rates. The effects of thermogalvanic coupling on the surface properties of the anode and the cathode have been analysed by means of electrochemical impedance spectroscopy (EIS). The results obtained in this analysis have been related to the process of copper electrodissolution in bromide media.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-10-01 |