6533b7dbfe1ef96bd126ff51
RESEARCH PRODUCT
Modeling Corrosion of Archaeological Silver-Copper Coins Using the Voltammetry of Immobilized Particles
Trinidad PasíesAntonio DoménechMaría Del Carmen BouzasMaría Teresa Doménech-carbósubject
Materials sciencebiologyMetallurgychemistry.chemical_elementSilver copperbiology.organism_classificationCopperAnalytical ChemistryCorrosionchemistryElectrochemistryGraphiteVoltammetryValenciadescription
Two complementary models to describe the long-term corrosion of silver-copper coins, based on potential rate laws for smooth corrosion and those combined with diffusive law, for gross corrosion, are proposed. Theoretical kinetics can be tested using signatures of copper and silver corrosion products using the voltammetry of immobilized particles technique. The method is applied to silver coins minted during the 13th–14th centuries from the Libertad street hoard in Valencia (Spain) using non-invasive one-touch graphite pencil sampling. Voltammetric features yield functional dependences in agreement with the proposed model potentially useful for distinguishing between different mints.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-09-05 | Electroanalysis |