Influence of Cathodic Protection on Erosion-Corrosion of Metals and Model Alloys

摘要

The object of this program is to develop a fundamental understanding of the influence of applied potential on mechanisms for erosion-corrosion as applied to copper and copper-based alloys. This work is intended to allow application of laboratory experiments to predict the onset of erosion-corrosion failure under field conditions and to guide development of workable strategies for prevention of erosion-corrosion. This program is being transferred to the University of Florida; therefore, this report provides a summary of the activities at the University of Virginia. In the first year of the program, an electrochemical cell incorporating a scanning ellipsometer was designed and built. The cell uses a submerged electrolyte jet impinging on an electrode. The laser spot size is around 25 x 70 micro meters, and the position of the electrode-jet assembly relative to the laser spot can be controlled by stepping motor stages without altering the hydrodynamic environment. (jes)