Multiple-scan voltammetry and OCP: Archaeometric tools for dating archaeological bronzes
| Autor: | María Teresa Doménech-Carbó, Marianne Mödlinger, Antonio Doménech-Carbó |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Bronze Age
Dating archaeological bronzes Cuprite General Chemical Engineering chemistry.chemical_element Context (language use) 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Analytical Chemistry Corrosion Crystallinity Electrochemistry Bronze Corrosion studies Voltammetry Deposition (law) Voltammetry of immobilized particles Metallurgy 021001 nanoscience & nanotechnology Copper 0104 chemical sciences chemistry PINTURA visual_art OCP visual_art.visual_art_medium engineering 0210 nano-technology |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| ISSN: | 1572-6657 |
| DOI: | 10.1016/j.jelechem.2021.115336 |
| Popis: | [EN] The application of a multiple-scan strategy to nanosamples taken from 18 cross-sections of Bronze Age arms and armour, as well as two Roman coins using two solid-state electrochemical techniques, the voltammetry of immobilized microparticles (VIMP) and open circuit potential measurements (OCP) is described. The voltammetric responses in contact with aqueous acetate buffer can be attributed to the reduction of cuprite with variable degree of compaction and crystallinity revealing significant differences in the gradient of such properties with depth. Such differences are also revealed by "dry" OCP measurements connecting points in the cross section near and separated from the corrosion layer. The voltammetric study of the metallographic samples of the bronze objects shows correlation with the age of the objects, respectively the period of their deposition. We discuss also (potential) influence of different factors on the VIMP and OCP measurements, such as deposition context (soil, water), chemical composition of the copper alloys, and microstructural features (ascast, annealed, work-hardened), and how to overcome these issues. Project CTQ2017-85317-C2-1-P, supported with Ministerio de Economia, Industria y Competitividad (MINECO), Fondo Europeo de Desarrollo Regional (ERDF) and Agencia Estatal de Investigacion (AEI), is gratefully acknowledged. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect