6533b86dfe1ef96bd12ca9d4
RESEARCH PRODUCT
Characterizing archaeological bronze corrosion products intersecting electrochemical impedance measurements with voltammetry of immobilized particles
Joan Piquero-cillaBlanca Ramírez-baratAntonio Doménech-carbóWassef Al SekhanehMaría Teresa Doménech-carbóSofia CapeloJorge Redondo-marugánsubject
Materials scienceGeneral Chemical EngineeringArchaeological bronze02 engineering and technologyElectrolyteengineering.material010402 general chemistryElectrochemistry01 natural sciencesCorrosionElectrochemistryElectrochemical Impedance MeasurementsBronzeVoltammetryElectrical impedanceVoltammetry of immobilized particlesMeasurementsMetallurgy021001 nanoscience & nanotechnologyArchaeologyElectrochemical Impedance0104 chemical sciencesPINTURAElectrodeengineeringErosion corrosion of copper water tubes0210 nano-technologydescription
Application of electrochemical impedance measurements to microparticulate deposits of copper corrosion products attached to graphite electrodes in contact with 0.10 M aqueous HClO4 electrolyte is described. The impedance measurements were sensitive to the applied potential and the amount of solid sample and were modeled taking into account the contribution of the uncovered base electrode. Several pairs of circuit elements provide monotonic variations which are able to characterize different corrosion compounds regardless the amount of microparticulate solid on the electrode. Application to a set of archaeological samples from the archaeological Roman site of Gadara (Jordan, 4th century AD) permitted to establish a grouping of such samples suggesting different provenances/manufacturing techniques.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-01 |