Nanostructured Anode Material for High Performance, Intermediate Temperature Solid Oxide Fuel Cell

65243 Accurate descriptions of corrosion damage accumulation are needed to support the development of corrosion prediction models. This project will develop a multi-element, microelectrode array technology to resolve small-length-scale chemical and electrochemical processes involved in localized corrosion of metallic alloy systems. The arrays formed will be simulated heterogeneous microstructures with length scales relevant to corrosion in real alloy systems, capable of mapping potential, pH, and current distributions associated with passive or actively corroding surfaces at microstructural length scales (1 to 1000¿m). Phase I will (1) fabricate microelectrodes from the engineering alloys of interest, (2) bundle these microelectrodes into arrays with length scales 100 ¿m or less, (3) test these arrays in corrosion environments, and (4) compare the data to that obtained using state-of-the-art corrosion test methods. Commercial Applications And Other Benefits as described by awardee: The multi-element microelectrode array should have wide application to corrosion research and development and to corrosion sensing for maintenance operations. Other applications include analysis of microelectromechanical systems and semiconductor process monitoring.