Siderite (FeCO3) and cementite (Fe3C) layers develop naturally on carbon steel surfaces in aqueous dioxide (CO2) environments. This study evaluates galvanic corrosion induced by such when coupled to bare steel. In CO2-saturated, 50 °C, pH 5 conditions, the Fe3C-filmed acted as net cathode, significantly enhancing rates. Galvanic currents FeCO3-filmed were much lower, with FeCO3 removed from sur...

The influence of [Fe]-hydrogenase from Clostridium acetobutylicum was studied on the anaerobic corrosion of mild steel. Two short-circuited mild steel electrodes were exposed to the same solution and hydrogenase was retained on the surface of only one electrode thanks to a dialysis membrane. The galvanic current and the electrode potential were measured as a function of time in order to monitor...

We have studied the processes leading to the cementation of colloidal particles during their autonomous assembly on corroding copper electrodes within a Cu-Au galvanic microreactor. We determined the onset of particle immobilization through particle tracking, monitored the dissolution of copper as well as the deposition of insoluble products of the corrosion reactions in situ, and showed that p...

Abstract This scientific article deals with cyclic corrosion testing of bimetallic joints in order to describe the influence different surface treatment as a protection against galvanic on materials. Multi-material body parts joined advanced manufacturing technologies are used achieve required car properties. Metallic materials have values electronegativity and joining increases risk corrosion....