Emulating media defect corrosion

This paper presents studies designed toward understanding media defect corrosion. Focused ion beam technology is used to create well-defined defects exposing alloys of interest. Temperature and humidity stressing is employed to facilitate defect corrosion. Atomic force microscopy is used to characterize the defects before and after environmental stressing. It is found that corrosion growth is largely affected by the exposed alloy corrosion sensitivity. Interaction with overcoat type and lubricant is also discussed.