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Presentation
Stress Distributions in Anodic Alumina Films Prior to the Onset of Pore Formation
Mechanical Engineering Conference Presentations, Papers, and Proceedings
  • Ömer Ö. Çapraz, Iowa State University
  • Pranav Shrotriya, Iowa State University
  • Kurt R. Hebert, Iowa State University
Document Type
Abstract
Conference
224th ECS Meeting
Publication Date
10-1-2013
Geolocation
(37.7749295, -122.41941550000001)
Abstract
Porous anodic oxide (PAO) films are grown by electrochemical oxidation of valve metals in baths that dissolve the oxide. The self-organized hexagonal patterns of pores in these films have led to many investigations of PAO-based devices. However, the mechanisms of pore formation and ordering have not yet been fully explained. Recent experimental and modeling results indicate the importance of plastic flow during growth of self-ordered PAO.1 Here we investigated the origin of stress driving plastic flow, and the possible role of stress in the morphological instability leading to pore formation. We report the first measurements of the evolution of stress distributions in barrier anodic oxide layers on Al, just prior to the appearance of pores.
Copyright Owner
Electrochemical Society
Language
en
Citation Information
Ömer Ö. Çapraz, Pranav Shrotriya and Kurt R. Hebert. "Stress Distributions in Anodic Alumina Films Prior to the Onset of Pore Formation" San Francisco, CA(2013)
Available at: http://works.bepress.com/kurtr_hebert/23/