20.500.12556/DiRROS-31392 A coupled multi-electrode array sensor for monitoring galvanic corrosion between copper and steel The advanced coupled multi-electrode array (CMEA) technique provides spatiotemporal insights into electrochemical processes. This study used the CMEA technique to monitor the distribution of anodic and cathodic activity during galvanic interactions between copper and steel. An important parameter influencing the intensity of galvanic corrosion is the anode-to-cathode area ratio, which was also investigated. After exposure, corrosion products were analyzed using microscopic and spectroscopic techniques, and the extent of actual corrosion damage was evaluated using µ-CT. In the CMEA sensor with a Cu:CS ratio of 24:1, the corrosion rate of the CS electrode was estimated at 0.86 mm year−1 . For the area ratio of Cu:CS 22:3, a lower corrosion rate of 0.56 mm year−1 was observed for the CS electrodes. The influence of the reduction process on copper electrodes and the intensity of galvanic corrosion is demonstrated. The main corrosion products on the CS electrodes were goethite, lepidocrocite, and akaganeite, indicating a corrosion process involving oxygen. The copper electrodes acted as cathodes, but some individual Cu electrodes also exhibited anodic activity. This suggests simultaneous anodic and cathodic activity, and the anodic activity was confirmed by Raman spectroscopy, which detected the presence of Cu2O. Cu2S was also detected, indicating corrosion processes involving bisulfide ions. carbon steel copper galvanic corrosion coupled multi-electrode arrays (CMEA) oxic environment ogljikovo jeklo baker galvanska korozija sklopljena mreža elektrod (CMEA) oksično okolje površinska karakterizacija true false true Electrochemical Society Angleški jezik Slovenski jezik © 2026 The Author(s) Neznano 2026-07-31 09:09:36 2026-07-31 09:13:42 2026-08-01 03:50:39 0000-00-00 00:00:00 2026 0 0 str. [1-13] no. 14, [article no.] 147503 Vol. 173 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2026-07-27 544.5/.6 1945-7111 10.1149/1945-7111/ae89ec 286375939 https://iopscience.iop.org/article/10.1149/1945-7111/ae89ec 1 cbdc203c-8cae-11f1-a81a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=48585 RAZ_Kregar_Klara_2026.pdf RAZ_Kregar_Klara_2026.pdf 1 85D46576E51336530483C07A7ADE6DDD 8c1b39e33b42f8a4c5dcc56df7fe44b78e64341b73674619b2185216efc3b970 3ac0699a-8caf-11f1-a81a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=48586 http://hdl.handle.net/20.500. 12556/DiRROS-30541 0 4be5aca4-8caf-11f1-a81a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=48587 Zavod za gradbeništvo Slovenije Dataset for the article "A coupled multi-electrode array sensor for monitoring galvanic corrosion between copper and steel" 0 0 0