Influence of the flowing conditions on the galvanic corrosion of the copper/AISI 304 pair in Lithium bromide using a zero-resistance ammeter
| Autor: | Montañés, Maria-Teresa, Sánchez Tovar, Rita, Garcia-Anton, Jose, Pérez-Herranz, Valentín |
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| Zdroj: | Scopus-Elsevier RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname ResearcherID |
| Popis: | [EN] In this work, the influence of Reynolds number (Re) on the galvanic corrosion of the copper/AISI 304 stainless steel pair in an 850 g/L lithium bromide solution was evaluated in a hydraulic circuit using a zero-resistance ammeter; this technique has the advantages that it can be used without disturbing the system under investigation and in continuous-time. Results show that copper is the anodic member of the pair for all the Re analyzed. The galvanic current density values are always greater under flowing than under stagnant conditions. A general tendency of galvanic current density to decrease with time is observed due to the formation of a film of corrosion products on copper surface. Under flowing conditions, initially, galvanic current density increases with Re; however, with time, this tendency is reversed. As Re increases, greater quantities of corrosion products are initially produced and, as a result, a thicker film is formed. This work was supported by the MICINN (reference number: CTQ2009-07518) and FEDER (Fondo Europeo de Desarrollo Regional). The authors also wish to express their gratitude to Asunción Jaime for her translation assistance. |
| Databáze: | OpenAIRE |
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